E.G. Devitsin, V.A. Kozlov, V.A. Nefedov,
A.R. Terkulov, B.I. Zadneprovski
№ 28. Colorless NaBi(WO4)2:In Cherenkov Crystals
for Electromagnetic Calorimetry.
[pdf — 225k] |Аннотация|
Colorless Cherenkov NaBi(WO4)2:In crystals have been developed. A reduction in the concentration of NBW yellow color centers provides a shift of the crystal optical transparency towards shorter wavelengths by about 50 nm in the UV range. Almost no deterioration in transmission properties of colorless NBW crystals was observed after irradiation with the dose of 3·107 rad.The results of MC calculations for the energy resolution of electromagnetic calorimeters based on different NBW crystals are presented.
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V.V. Azharonok, I.I. Filatova, V.D. Shimanovich, V.N Ochkin,
L.N. Orlov, J.I. Necrashevich, V.V. Nevdakh
№ 37. Spectral studies of space structure and RF frequency dependencies of
plasma parametres in a slab ?-discharge in CO2+N2+He gas mixtures.
[pdf — 328k] |Аннотация|
The spectroscopic parameters of transversal RF discharge in gas mixtures CO2+N2+He are investigated with space resolution. It has been observed that the width of the shields in a capacity RF discharge in such mixtures is almost independent on the frequency of RF field, so sufficiently differs from the standard theoretical predictions. The spatial distribution of the neutral gas temperature in various gas mixtures has been measured and discussed. The influence of the small additives of water vapour on luminescence intensity and its spatial distribution is also discussed.
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