V.I. Alexeev , E.G. Bessonov , A.V. Serov ,
№ 6 UNDULATOR RADIATION IN A WAVEGUIDE
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Some aspects of the particle radiation emission in a waveguide installed in the magnetic field of the imdulator are investigated. The calculated results are compared with the experimental data.
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A.A. Polezhaev , D.S. Chernavskii ,
№ 10 А MODEL OF PATTERN FORMATION BY PRECIPITATION
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V.A. Petrunkin , A.I. L , P.S. Baranov ,
№ 12 NUCLEON POLARIZABILIITIES AND THE METHODS FOR MEASURING THEM
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The present review discusses the nucleon polarlzabilities as calculated in the potential quark models (QM) and the two-photon processes where the polarizabilities are measurable. The problem has got more interesting after the works [ 1, 2 I where an initimate relationship between the polarizabilities and the poorly QCD-treatable peripheral structure of nuoleons was emphasized.
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A.G. Savinkov ,
№ 15 SCATTERING ON THE DIRAC MONOPOLE IN A TOTAL SPACE OF PRINCIPAL BUNDLE
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The scattering wave function in quantum mechanics of a charging particle in the Dirac monopole field is found by using a principal bundle total space considerations.
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V.Ya. Fainberg , S.N. Karnaukhov , E.Kh. Veliev ,
№ 21 YANG-MILLS FIELD QUANTIZATION IN MODIFIED AXIAL GAUGE
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Modification of the gauge condition nA = 0 is considered for dealing with singularity (nk)-1 . Some nA-gauge ad?vantages exist in modified gauge. The absence of Gribov ambiguities is not conserved.
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A.A. Tseytlin ,
№ 24 RENORMALIZATION OF ?MOBIUS? INFINITIES AND PARTITION FUNCTION REPRESENTATION FOR STRING EFFECTIVE ACTION
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We show that subtraction of the llobius group volume in the open string massleas amplitudes can be realized as a renormalization of linear 2-d ultraviolet divergences in the generating functional («partition function»). This implies that the vector field effective action can be represented as a rerormalized partition furjction (i.e. as a path integral of the «Wilson factor»). We check this by computing several leading terms in the non-abelien effective action.
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A.M. Semikhatov ,
№ 30 SOLITON EQUATIONS AND THE VIRASORO ALGEBRA
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Starting, in the set-up of the infinite-dimensional Grassmanian approach, with a Pock space representation of the Virasoro algebra related by the Krichever map to the action of DiffS on J-differentials on a Riemann surface, we proceed to the Kadomtsev-Petviashvily (KP) equations and show the generators to become certain vector fields on a manifold of pseudodifferentiel operators arising in the KP theory. These vector fields furnish a representation with c=0. We conjecture that constructing its central extension may in?volve the Gelfand-Dikii symplectic structures on J^
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O.D. Dalkarov , K.V. Protasov , I.S. Shapiro ,
№ 37 P-WAVE ENHANCEMENT IN BARYON-ANTIBARYON SYSTEMS AT LOW ENERGY
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The physical reasons of anomalously large P-wave enhancement in pp interaction at low energy and in pp reaction near threshold are revealed. For this the total, elastic, annihilation and charge-exchange cross-sections of pp interaction, energy dependence of real-to-imaginary ratio for forward elastic pp-scattering amplitude, shifts and widths of IS- and 2P-levels of pp-atom, and also total, differential cross-sections, polarization of Л<Л> in PP ЛЛ reaction near threshold are calculated using coupled channel model and compared with LEAR data. It is shown that the common reason of observable P-wave enhancement in all these processes is the existence of nearthreshold P-states of quasinuclear nature in nucleon-antlnucleon and hyperon-antihy-peron systems.
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I.N. Kompanets , A.V. Parfenov , A.A. Vasiliev ,
№ 38 IMAGE CONVERTERS FOR OPTICAL INFORMATION PROCESSING
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V.V. Dodonov , V.I. Man , D.L. Ossipov ,
№ 57 GAUGE INVARIANT WEYL REPRESENTATION: FUNDAMENTALS
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M.A. Vasiliev ,
№ 58 CONSISTENT EQUATIONS FOR INTERACTING MASSLESS FIELDS OF ALL SPINS IN THE FIRST ORDER IN CURVATURES
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A new form of equations of notion is suggested for d=4 massless fields of all spins interacting with gravity: equations of all massless fields, including the gravitational field itself, are described in terns of a free differential algebra constructed from 1-forms and O-forms belonging both to the adjaint representa?tion of the superalgebra of higher-spin and auxiliary fields proposed previously by E.S.Eradtein and the author. In this construction, l-forms describe gauge mass-lees and auxiliary fields, while O-fbrnB describe lower-spin fields and weyl ten?sors corresponding to gauge Worms. The equations of motion are constructed explicitly in the first order in the Vfeyl О-гопю (and in all orders in 1-forras) that exceeds significantly the results of refs./l,2/ en the cubic higter-spin-gra-vitaticnal interaction. The equations obtained are shewn to remain consistent when all quantities take on their values in an arbitrary associative algebra. This enables us to describe simultaneously a class of extended-type theories with Yang-Mills gauge groups UMxUM corresponding to massless spin-i fields (n is arbitrary), various consistent truncatiLcra of these extended theories are also discussed including those wittt Yang-Mills gauge groups SO(n)xS0(n).
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V.V. Dodonov , V.I. Man»ko ,
№ 59 UNCERTAINTY RELATIONS FOR MIXED QUANTUM STATES
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We derive new inequalities relating the minimal possible value of the product of the «uncertainties» of the coordi?nate and the momentum with the «degree of purity» of the quantum state which can be charaterized by the trace of the square of the statistical operator or by the quantum-mecha?nical entropy of the state.
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V.L. Ginzburg ,
№ 61 HIGH-TEMPERATURE SUPERCONDUCTIVITY: SOME REMARKS
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V.Ya. Fainberg , A.V. Maeshakov ,
№ 62 LOCAL SUPERSYMMETRY AND DIRAC PARTICLE PROPAGATOR AS A PATH INTEGRAL. MASSIVE PARTICLE AND PARTICLE IN THE EXTERNAL YANG-MILLS FIELD
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The expression of Dirac particle propagator satisfying the first order equation as a path integral is generalized to the cases of massive particle and particle in the external Yang-Mills field. The starting point is reparametrizationinvariant and locally supersymmetric action. The problem of the invariance of non local action of Dirac particle in the external Yang-Mills field under the supersymmetry transforma?tion is studied.
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A.A. Zozulya ,
№ 65 THE FOUR WAVE MIXING THEORY IN PHOTOREFRACTIVE CRYSTALS FOR NONLINEAR IN MODULATION RATIO MEDIUM RESPONSE
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The theoretical model of the four wave mixing in photorefrac tive crystals for nonlinear in modulation ratio medium response is developed. The comparison with the theoretical model using linear in modulation ratio medium response is made. Two wave mixing and four wave mixing models are compared also with the experiment.
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V.A. Karmanov , A.V. Trukhov ,
№ 67 MECHANISMS OF SUPPRESSION OF THE ANTIPROTON-NUCLEUS ANNIHILATIONLESS BREAKUP CROSS SECTION
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The MohaniaB* of considerable (by the order of sagnltude) suppression of the annlhllatlonless nuclaua breakup by tha lo? energy antlprotona found for tha p^He Interaction In the expc-rlaenta [1,21 are Investigated. It Is shown that for the pO Interaction thla aupprasslon Is cauaad by narrowness of the forward cone In pH acattarlng, whereaa for aora heavy nuclal thla aacha-nlaa la quickly replaced by other one connected with large valua of the pH annihilation cross section. In the casa of the p^Hr interaction both aechanisas are equally iaportant.
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A.A. Chilingarian , S.Kh. Galfayan , V.G. Denisova , A.M. Dunaevsky , S.A. Kunova , M.Z. Zazyan ,
№ 75 UPPER BOUNDARY OF IRON NUCLEI FRACTION IN PRIMARY COSMIC RAYS 16 AT E > 10 eV
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The maximum fraction of Famir experiment gaimta-families produced by primary iron nuclei is estimated by analysis of two-dimensional distributions of various pairs of energy, lateral and azlmuthal synmetry characteristics of gamna-families. The statistical decisions method has been applied for the estimation of iron induced experimental gamoia-families fraction.
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S.V. Diakonov , B.V. Somov ,
№ 76 THERMAL ESCAPING ELECTRONS OF A SOLAR FLARE IN THE REVERSE CURRENT MODEL AND THEIR X-RAY BREMSSTRAHLUNG
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The behaviour of the thermal electrons escaping from a hot plasma to a cold one during a solar Bare is investigated. We suppose that the direct current of fast electrons is compensated by the reverse current of the thermal electrons in ambient plasma. It is shown that the direct current strength is determined only by the regular energy losses due to Coulomb collisions. The reverse4;urrent electric field and the distribution function of fast electrons are found in the form of an approximate analytical solution to the self-consistent kinetic problem of the dynamics of a beam of escaping thermal electrons and its associated reverse current. The reverse-current electric field in solar flares leads to a significant reduction of the convective heat Sux carried by fast electrons escaping from the high-temperature plasma to the cold one. The spectrum and polarization of hard X-ray bremsstrahlung, and its spatial distribution along flare loops are calculated and can be used for diagnostics of flare plasmas and escaping electrons. 1 Send offprint requests to B.V. Somov
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O.D. Andreev , A.A. Tseytlin ,
№ 80 PARTITION FUNCTION REPRESENTATION FOR OPEN SUPERSTRING EFFECTIVE ACTION: CANCELLATION OF MOBIUS INFINITIES AND DERIVATIVE CORRECTIONS TO BORN-INFELD LAGRANGIAN
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We justify the 6*-model partition function representation for the open superstring effective action (EA) for massless vector fields. We first consider the open Bose string theory and interpret Mobius infinities present in on-shell amplitudes before Mobius gauge fixing as a part of power 2-й UV infinities of the regularized Возе string theory. This helps to clarify the relation between the partition function Z and the KA. We find that in the Boae string theory Z does not exactly coincide with EA (they differ in one of FaPJP -terms). This difference (connected with the fact that the open Bose string Uoblus Уо1гдте Is linearly divergent) disappears in the open superstring theory where the superMoblus volume Is finite. The cancellation of power infinities in the superstring theory implies the absence of Mobius infinities and hence the possibility to compute the superstring amplitudes without fixing a (super) Mobius gauge. This proves the equivalence between the renormalized Z and the EA (renormailzation of pure logarithmic infinities corresponds to subtraction of massless exchanges). This equivalence is checked by explicit computations and applied to establish the absence of the leading field strength derivative dependent correction WiF f(P) to the Born-Infeld tent: in the open superstring EA (there aie, however, МРадаЧ*?-terms In the EA). We also emphasize the advantages of the S* -model approach based on the generating functional Z over the standard vertex operator approach. In particular, we find that the manifeatly 2-d supersymmetrlc and ga?uge invariant Z (defined as the 2-d expectation value of the 1-d supersymmetrlc generalization of the tr P exp -factor) automatically contains the contact terms which is necessary to add to the 3tandard expressions for the amplitudes in order to ensure their 3-d supers;/mmctry and gauge invariance without need tc rely on malytic continuution in momenta.
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L.V. Rozansky , A.A. Tseytlin ,
№ 81 CONSISTENCY BETWEEN THE S-MATRIX AND THE SIGMA-MODEL APPROACHES TO THE CLOSED STRING EFFECTIVE ACTION ON THE DISC
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We show that a part of logarithmic divergences in the closed bosonlc string amplitudes on the disc was overlooked in the previous studies. The sum of all logarithmic divergences is found to be in agreement with the «tadpole» divergences in the effective field theory with the «cosmological tenn» representing the disc correction. This resolves the problem raised recently by ?ischler, Klebanov and Susskind.
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D.D. Bhawalkar , G.V. Fedotov , G.V. Sklizkov , A.V. Rode , H.C. Pant , P.D. Nadwana , P.A. Naik , Yu.A. Mikhailov , S.R. Kumbhare , M.P. Kalashnikov , A.A. Galichy , N.G. Basov , V.H. Shlyaptssev ,
№ 82 THE STUDY OF K-, L-, M-SPECTRA OF LASER PLASMA RADIATION FOR X-RAY BACK-LIGHTING DIAGNOSTICS
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The spectral measurement results of laser plasma radiation in the spectral ranges of 6-7 8 and 7,5-8,5 8 for flat targets (nuclear charge is 6-83) are given. The density of K-, L-, M-spectra measured In the experiments (~ 15 16 10~10 quanta) is compared with calculation results of the conversion of laser radiation into X-ray radiation of the laser plasma. The obtained results aLlow to optimize the laser-plasma source of soft X-ray radiation, particularly, for the back-lighting scheme of the high-temperature dense plasma diagnostics.
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T.E. Fradkina ,
№ 86 THE LAGRANGIAN MEASURE IN GAUGE THEORIES OF GENERAL FORM
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V.M. Kolybasov ,
№ 91 DEUTERON KNOCK-OUT AND VIRTUAL LOOSELY BOUND SYSTEMS IN FEYNMAN GRAPHS
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It is shown that for the description of deuteron knock-out the dlagram with ‘noncorrelated* np-palr transfer Is Isportant In addition to the pole Feynaan dlagraa. It essentially changes the result and leads to thu redefinition of the nuclear vertex In the pole graph. Tne- vertex now, in contrast with the results of paper/3/
A.V. Plyasheshnikov , A.K. Konopelko , K.V. Vorobjev ,
№ 92 THE THREE-DIMENSIONAL DEVELOPMENT OF HIGH ENERGY ELECTROMAGNETIC CASCADES IN THE ATMOSPHERE
Скачать препринт [spoiler]Ihe three-diiaei.. on&l deTelopment of hlir nergy exvotro-magnetlo cascade in the atmosphere is invesixgated by two independent numerical methods — ‘ semi-analytical Monte-Carlo and the bit-polynomial method of adjoint cascade equations eolution. Detailed calculations are carried out for the lateral distribution function (LD?) of the total electron ntimber flux, LDF of the total cascade particles energy flux, LDF of energy losses in the scintillation counter. ЗЬе calculation results discussed in this paper corres?pond to the primary photon energy region Ey ? 2 7 (10-10 ) GeV, the distance from the shower axis ite (1?500) m, cascade parameter S? (O.6-l.S) . The influence on the LDF form of air density altitude variation is analyzed. The validity region of obtained previously analytical and numerical results on mentioned above types of LDF is shown. All the calculation results are represtated in the form comfortable for practical usage.
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V.M. Zverev , V.P. Silin ,
№ 93 PHONON MECHANISM AS A CAUSE OF TEMPERATURE DEPENDENCES OF MAGNETIC PROPERTIES OF METALS
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The шаiп aspects of self-consistent fluctustlon-phonon approach to ferromagnetism theory are discussed. Temperature dependences of magnetic properties of typical ferromagnetic metals are elucidated.
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S.E. Konstein , M.A. Vasiliev ,
№ 94 MASSLESS REPRESENTATIONS AND ADMISSIBILITY CONDITION FOR HIGHER-SPIN SUPERALGEBRAS
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Massless particle representations of various infinite-dimensional higher-spin superalgebras proposed previously are constructed. We analyse which of higher-spin superalgebras obey the requirement (the admissibility condition) to possess massless imitary representations with the same spectra of spins as predicted by the structure of gauge fields originating from these superalgebras. It is argued that those higher-spin superalgebras, which obey the admissibility condition, can serve as rigid supersymmetries in nontrivial consistent gauge theories of massless fields of all spins.
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V.S. Zuev , A.V. Kanaev , L.D. Mikheev ,
№ 95 THE RELAXATION PROCESSES IN EXCITED XENON
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The concentration dependences of quantum yields of He2 luminescence have been measured at optical excitation of H2Xe gaseous mixtures in the spectral region from 146 to 150 nm. The branching of photochemical reactions and the shares of Qu and Iu/Qu states in the luminescence of molecular xenon at 172 nra are found. The constants of Xe*2(Iu/Qu), Xe*(3P2) and Xe*(3P2) quenching by a molecular hydrogen are measured. A kinetic scheme of the relaxation processes in excited xenon at E* <~ 8.5 eV has been developed.
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A.A. Tseytlin ,
№ 106 RENORMALIZATION OF STRING LOOP CORRECTIONS ON THE DISK AND THE ANNULUS
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We establish the consistency between the Sigma -model and S-matrix approaches to the string effective action on the disc and the annulus. The general procedure of computing the mess-leas tadpoles is given. The crucial role of renormalization of Mobius infinities on the disc is stressed. We explicitly check the renormalizability (with respect to modular infinities) of the generalized (summed over genera) (Sigma -model partition function and suggest that the condition of the renormalizability fixes relative weights of string loop corrections to the effective action.
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A.M. Agaltozov , V-.S. Gorelik , L.I. Zlobina ,
№ 107 NONELASTIC LIGHT SCATTERING AND THE SECOND OPTICAL HARMONICS IN AMINOACiD CRYSTALS AND THE SIMPLEST PROTEINS
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The remilte of Raaan speotra inveetleatione of the external and internal nodes for crystalline aminoaoids and the olnplest crystalline protein — ineullne and lysozyme are presented. There was revealed the distinct difference in Raman low-fmquenoy ерео? tra for different aalnoaoids. Besides that the comparing of second harmonic generation intensities for a number of biological substances has been carried out.
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V.Ya. Fainberg , A.V. Subbotin ,
№ 108 STOCHASTIC QUANTIZATION OF NON-ABELIAN THEORIES AND GAUGE-INVARIANT RENORMALIZABILITY
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N.G. Basov ,
№ 110 LASER RESEARCH AT LEBEDEV PHYSICAL INSTITUTE
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The laser traditions of Lebedev Physical Institute date back to the very beginning of quantum electronics of microwave range /1/. The scientists of Lebedev Institute carried out the pioneer investigations in the field of semiconductor lasers (including injection lasers) /2, 3/, excimer,-gas-dynamic and chemical lasers on chain reactions /4, 5/, and autonomous chemical lasers /6/, electroionization lasers /7/, lasers on copper vapours /8/. In the field of nonlinear optics the Lebedev Institute has the priority investigations on the self-refraction of radiation /9/, stimulated Rayleigh scattering /10/, the phase conjugation concept /11/. The pioneer laser investigations have stimulated the field of applications, such as laser thermonuclear fusion /12/, intracavity spectroscopy /13/, laser chemistry /14/, optical frequency standards and so on. The scientists of the Institute have made a significant contribution into the development of nonlinear dynamics of laser and other optical systems /16,17/. Here we report the modern state of laser research at Lebedev Institute which is most close to the topics of the present conference.
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R.. Kallosh , A.. Morozov ,
№ 111 ON VANISHING OF MULTILOOP CONTRIBUTIONS TO 0,1,2,3-POINT FUNCTIONS IN GREEN-SCHWARZ FORMALISM FOR HETEROTIC STRING
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We analyse the structure of insertions arising in multiloop calculations in the first-quantized version of Green-Schwarz formalism. We show, that at least four constant zero modes of Grassmanian Teta-fields related to space-time super-symmetry are not removed by insertions. Occurence of these zero modes straightforwardly leads to non-renormalization theorems, which imply that all 0,1,2,3-Point functions vanish.
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V.P. Shevelko , L.A. Vainshtein , E.A. Yukov ,
№ 113 THE CROSS SECTIONS AND THE RATE COEFFICIENTS FOR INELASTIC ELECTRON COLLISIONS WITH THE CARBON AND OXYGEN IONS
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A.A. Bykov , A.V. Leonidov , A.D. Mironov ,
№ 114 QUANTUM PROPERTIES OF QCD STRING AND HEAVY QUARKONIA SPECTROSCOPY
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The situation with quantum corrections to large-R behaviour of potential induced by the string is considered theoretically as well as experimentally. The sensitivity of the heavy quarkonia spectroscopy to this corrections is discussed. We obtain the restrictions on possible value of the central charge of the Virasoro algebra, which is conjectured to correspond to QCD string.
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I.L. Buchbinder , O.K. Kalashnikov , I.L. Shapiro , V.B. Vologodsky , Yu.Yu. Volfengaut ,
№ 123 ASYMPTOTIC FREEDOM IN QUANTUM R2-GRAVITY WITH MATTER
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А grand unified theory (GUT), interacting with the 2 quantized gravltational field within the R -gravity model, is considered. The quantum gravity contributions to the renormalization group equations for the effective couplings of the gauge and gravitational selfinteraction and for the scalar coupling constants are calculated. It is shown, that account of the interaction with the quantized gravitational field loosens restrictions imposed on the theory for achieving the asymptotic freedom and makes it possible to construct more perfect models of grand unification, which are asymptotically free in all the coupling constants.
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V.Ya. Fainberg , A.V. Marahakov ,
№ 124 А PROPAGATOR FOR KERMIOHIC STRING
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Proceedlrig from path Integral for open fermionic string the expression for propagator is obtained. The result is compared with that of operator calculations for Green function of fermionic string. In the case of pointlike boundary conditions the expression for propagator can be written in the form of Kallen-Lehmann representation with increasing spectral density.
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A.A. Tseytlin ,
№ 125 MOBIUS INFINITY SUBTRACTION AND EFFECTIVE ACTION IN SIGMA-MODEL APPROACH TO CLOSED STRING THEORY
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We show how to express the closed string tree amplitudes and effective action in terms of the correlators in the 2-d sigma-model. The subtraction of Mobius infinities corresponds to taking d/dlnЕ ( E is a 2-d UV cutoff) of the regularized correlators. The effective action is represented as the integral of the «central charge» coefficient thus demonstrating the equivalence between the S-matrix and sigma-model approaches to string (tree) equations of motion. The ?d/dlnE?- prescription provides a consistent way of computing tree tadpoles on non-trivial backgrounds emd hence of studing string loop corrections to the equations of motion by equating the full tadpole to zero.
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V.A. Baskov , V.B. Ganenko , B.B. Govorkov , V.N. Zapolsky , V.V. Kim , L.Ya. Kolesnikov , B.I. Luchkov , V.A. Maisheev , A.L. Rubashkin , V.I. Sergienko , P.V. Sorokin , V.Yu. Tugaenko , V.A. Khablo , V.I. Yumatov ,
№ 143 ELECTRON-POSITRON PAIR PRODUCTION BY GAMMA QUANTA WITH ENERGIES FROM 13 TO 25 GEV IN ORIENTED TUNGSTEN CRYSTALS
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Orientation dependences of e+e~ pair photoproduction and ra-iatioa probabilities as well as an energy dependence of pair i toproduction probability in the vicinity of the axis <111> of a tungsten crystal 1 mm thick are presented.
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V.A. Baskov , V.B. Ganenko , B.B. Govorkov , V.N. Zapolsky , V.V. Kim , L.Ya. Kolesnikov , B.I. Luchkov , V.A. Maisheev , A.L. Rubashkin , V.I. Sergienko , P.V. Sorokin , V.Yu. Tugaenko , V.A. Khablo , Yu.V. Chernov , V.I. Yumatov ,
№ 144 Radiation losses of 28 gev/c elektrons in an oriented tungsten crystal
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A dependence of the electron radiation losses on the angle between the beam axis and the axis <111> in a tungsten crystal 1 mm thick has been measured.
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E.I. Volkov , M.N. Stolyarov ,
№ 150 The modelling of heterogeneity in proliferative caracity during clonal growth
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We investigate a population ol ceils which are considered ae interacting oscillators. Each oscillator haa on? alow and one rapid component obeying a ayatan of two ordinary dilleren-tial equations. Earlier it ?aa found that diffusa ??change of tha alow variable between two ldantloal evils raaulta in the appearance of two ?table Halt cyolee with different period?. Uaing thia property we ahow that the variability of call cycle generation tinea in a growing clone atrongly increases at low aerua concentration. The enhenoeeent of variability la related not only to the traneition probability definition but to cell-cell interactions alao. The correapondence ?f theae reaulta with experimental data obtained by Brooks and Middle 11966) la dlacuaeed.
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A.V. Marshakov ,
№ 151 Thr path integral representation of fermionic string propagator
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The representation for the propagator of fermionic Neveu-Schwarz-Ramond string as a path integral over two-dimensional surfaces with fixed boundary curves is proposed. It is shown that in the case of pointlike boundary conditions the result of the computation has a natural interpretation and it can be compared with the result of operator calculation? The ultraviolet and in?frared singularities of the propagator are considered.
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O.D. Dalkarov , K.V. Protasov ,
№ 157 Nucleon electromagnetic form-factor in the time-like region near nn threshold
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Nucleon electromagnetic form-factor in the time-like region near NN threshold is calculated. Its behavior is shown to be do-minantely defined by the NN nuclear interaction in initial state. For this reason an investigation of nucleon form-factor in this energy region could be useful for independent extracting of the low energy NN parameters.
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Е.А. Каневская , Р.А. Нам , Ю.А. Смородин ,
№ 170 Калибровка многоканального источника &-электронов и контроль кривых почернения пленок рентгеноэмульсионных камер
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The construction and calibration of the intensity of the seven canal В -electron source are described. The interval of the darkness from 0 D to 4-D is controlled. The method of the calculation of the parameters s, D of the darkness ourve D(n) in the form D = D ( 1 — exp(-ns)) is presented. Different methods of the correction of the measured cascade shower spot darkness for the unification to the standard developed films are discussed.
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V.M. Zverev , V.P. Silin ,
№ 181 THE THEORY OF THE INVAR PROPERTIES OF IRON-NICKEL ALLOYS
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The temperature dependences of the magneto-volume properties of the invar alloys Fe1-xNlx at X~0,35 are ioterpreted on the basis of the self-consistent fluotuation-phonon (8CPP) approach to the theory of metal magnetism.
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V.M. Zverev , V.P. Silin ,
№ 182 SELF-CONSiSTENT FLUCTUATION-PHONON (SCFP) APPROACH TO THE THEORY OF MAGNETISM
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The main aspects of the thermodynamios of itinerant electron ferromagnets baaed on the self-consistent fluotuotlon-phonon (SCFP) approach are discussed. Temperature dependences of magnetic properties of typical ferromagnetlc metals are eluoidated. We demona.trate hoar onr dynamio theory of metal elaetiolty permits to obtain the bulk modulae at the oonetant magnetiction and the conetant magnetic Induction Kb end how they are asseooiated with the different longitudinal complex eluctrer permeabilitiea of a metal, correapondlng to the oonditiona of the oonetant magnetication and the constant magnetic induction respectively.
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Г.К. Артимович , В.И. Ритус ,
№ 189 СДВИГ МАССЫ ЭЛЕКТРОНА, СОВЕРШАЮЩЕГО ПЕРИОДИЧЕСКОЕ РАВНОУСКОРЕННОЕ ДВИЖЕНИЕ В ТРУБЕ
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An expression for the mass shift of electron in electric field of special type is obtained. The influence of the boundary conditions on the mass shift is studied. The results of the work show in explicit form, that infrared divergences are due to the infinitness of movement of electron.
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В.А. Тукарев , Н.П. Сапошников , В.И. Микеров ,
№ 191 МЕТОДЫ РАСЧЕТА КОЭФФИЦИЕНТА ОТРАЖЕНИЯ НЕЙТРОНОВ ОТ МНОГОСЛОЙНЫХ ИНТЕРФЕРЕНЦИОННЫХ СТРУКТУР
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Calculating methods of neutron reflection coefficient from multilayer interference structures are presented. The comparable analysis of this methods have been toads and some recomendations for of this methods are given.
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В.И. Алексеев , Е.В. Алиева , К.А. Беловинцев , Е.Г. Бессонов , А.В. Серов , П.А. Черенков ,
№ 192 ПАРАМЕТРИЧЕСКИЙ ЛАЗЕР НА СВОБОДНЫХ ЭЛЕКТРОНАХ НА ОСНОВЕ МИКРОТРОНА
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The constraction of the parametric free electron laser and the experimental results of the spontaneous and induced undulator radiation are presented in the work. The radiation was registered in the wavelength region of 12 ? 3.5 mm, The wavelength of radiation woo changed by moans of changing of the poriod and the value of the undulators gap. The measured impulse radiation power cms of the order of в hundred watts.
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A.M. Semikhatov ,
№ 197 BOSONIZATION, FUNCTIONS AND OPERATOR FORMALISM ON RIEMANN SURFACES
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We propose an operator bosonieatlon of spin J bo-systeas on Rlemann eurfacee of arbitrary genus. The bo-sonlsation Is carried out at the operator level in terras of Bose eonformal field theory operators which are ?ell-defined globally on the Rlemann Surface and are essentially given by operator-valued Baker-Akhiezer funotione? The formalism yields an elementary derivation of higher-loop bo-oorrelation function*! as well as a boeonio ope?rator realisation of the algebro-geometrle tau func?tion of arbitrary Rlemann Surfaces. It also enables us to construct explicitly an operator that glues a handle to Rlemann Surfaces.
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S.N. Karnaukhoc , A.V. Subbotin ,
№ 201 THE DEPENDENCE OF COUNTER TERMS ON GAUGE PARAMETERS IN GAUGE INVARIANT FORMULATION ON YANG-MILLS STOCHASTIC QUANTIZATION
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We study the dependensce on gauge paramemeters of one-loop correction? to two-point correletion function of non-Abetian gauge field? It is shown that the renormalisation of kinetic coefficient is independent of the gauge condition The dependent of other counter terms is similar to that, calculated by authors of [6] , We use the gauge-invariant formalistic of stochastics quantisation and the notation fictious additional field В.
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В.Е. Курьян , А.В. Пироженко ,
№ 205 Появление инверсной заселенности в квантовой системе при ее равномерном движении по окружности в среде
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The quantum effects due to the rotation of a system with a constant velocity In the media are considered. It is shown that the interaction of the uniformly rotating detector with the vacuum sero-poiat fluctuations may create the inverse distribution of the detector over its energy levels.
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Р.А. Карапетян , Л.В. Курносова ,
№ 207 ОБ ИДЕНТИФИКАЦИИ ЯДЕР КОСМИЧЕСКОГО ИЗЛУЧЕНИЯ С ИСПОЛЬЗОВАНИЕМ ВРЕМЯ-ПРОЛЕТНОГО ТЕЛЕСКОПА НА БАЗЕ МИКРОКАНАЛЬНЫХ ПЛАСТИН
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The charaсteristics of the time-of-flight method of the nuclei detection In the range 10-400 Mev/nuoleon and charge interval 5iSf<30 are presented. General construction of the time-of-flight telescope and detectors used is described. The estimations show that the identification of nuclei In the range indicated is possible.
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М.Ю. Артемьев , А.З. Грасюк , В.Г. Дементьев , В.М. Нестеров ,
№ 212 НЕОДНОРОДНОСТЬ АКТИВНОЙ СРЕДЫ И РАСХОДИМОСТЬ ИЗЛУЧЕНИЯ ЭЛЕКТРОРАЗРЯДНОГО XeCI ЛАЗЕРА
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А divergence of the electric-discharge XeCl laser with UV-preionisation radiation has been studied for generation pulse duration t-70 ns and Т^ЗОО ne (FWHM) (pump power density has been varied from 0,1 МИ/сm3 to 0,4 MW/cm3). It has been obtained that the divergence is practically independent. from component’s composition (ИС1, Xe, Ar, Ne) and gas mixture pressure. The divergence of plane-resonator XeCl laser radiation with pulse duration t=300 ns was 3’10»-‘red5 at the pulse duration t=70 ns the divergence was 5*IO rad for plane resonator and 1,4.10 rad for unstable telescope reso?nator with magnification M*3. An estimate of рump power density non-uniformity along the active medium apperture t’lat does not increase beam divergence 1s obtained.
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Н.В. Кабанова , В.А. Ромахин ,
№ 214 ИССЛЕДОВАНИЕ ФЛУКТУАЦИИ ПЛОТНОСТИ ПОТОКА ЧАСТИЦ ЭЛЕКТРОННО-ФОТОННОЙ КОМПОНЕНТЫ ШАЛ, ИЗМЕРЯЕМОЙ СЦИНТИЛЯЦИОННЫМИ ДЕТЕКТОРАМИ
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Fluctuation of the electron density at different distance from thе соrе of extensive air showers are analysed for showers Ne 10 at mountain altitudes. She value of fluctuations depends only from simple statistical and instrumental causes at distances greater 7 — 10 m. Fluctuations increas bard with decreasing distanse from the EAS core at lees distance. This may be duo to inefluence of the hadronio component of EAS.
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E.J. Ferrer , V.de la. Incera ,
№ 223 BARYON ASYMMETRY IN HIGH-DENSE POSTINFLATIONARY UNIVERSE
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A scenario for the evolution of a high-dense post-inflationary universe in ihe framework of the electroweak theory is suggested. 1’he temperature at which the baryon-number nonconserving procescces are frozen is found as a function of the fermion density of the sistem, vith the result that at high density the freezing temperature can be much lar?ger than its zero-density value T*~200 GeV. Thanks to this fact the high density оf the universe nay remain unchanged up to the last stage of decay of squarks and sleptons, et T<200 GeV, At this time previous large baryon asymmetry is erased only the originated from the decay the scalar fields being left.
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Yu.M. Aliev , O.M. Tolkachev , L.. Stenflo ,
№ 242 PARAMETRIC GENERATION OF LOW-FREQUENCY ELECTROMAGNETIC FIELDS IN COLLISIONLESS PLASMAS
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We consider the parametric excitation of quasi-statlc electomagnetic fields in an electron plasma situated In an extei el oscillating electrlc field. In contrast to previous studies, we turn our attention to the case where all waves ere transverse. A new instability mechanism Is found.
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.. EMU-01 COLLABORATION ,
№ 244 CENTRAL INTERACTIONS OF 16O NUCLEI WITH HEAVY NUCLEI OF PHOTOEMULSION AT 200 GEV/NUCLEON
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|Аннотация|
A central Interactions of the 200AGeV nucleo with the Ag and Be nuclei of the emulsion target went selected accordlng to the criteriai Hh>10 and Q = 0, where Q =sumZfi is a sum of charges of all progactils fragments. Data about charged multlplicities and angular distribution of secondary shower particlass fron those interactions are presented.
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V.Ya. Fainberg , A.F. Izmailov , A.R. Kessel ,
№ 250 NONPERTURBATIVE DERIVATION OF THE NUCLEON-NUCLEON STATIC INTERACTION POTENTIAL
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With the help of the new approach to Ша nucleon-nucleon Interaction potential due to the virtual exchange processes via the scalar and pceudoscalar mesons is derived ie all orders on the local nucleon-mеsоп interaction constant. The offered theory containes the only parameter — the top impulse Pm.
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A.I. L`vov , V.A. Petrunkin ,
№ 258 POLARIZABILITY OF THE NUCLEON
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Resent theoretical end experimental inverstigations of electromagnetis nucleon polarisabilition are revicwed. A nead for taking Into account nonvalent quark degrees of freedom (pion cloud) while callculating nucleon polarisablities in quark models la emphasesed. New poseibllities measuring proton and neutron polarisabilitties are discussed.
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