Radiation stability of high pressure xenon gamma-ray spectrometers

Author

Dmitrenko, V.V. ; Dvomyak, A.G. ; Galper, A.M. ; Gratchev, V.M. ; Kondakova, O.N. ; Krivov, S.V. ; Krivova, K.V. ; Liagushin, V.I. ; Ulin, S.E. ; Uteshev, Z.M. ; Vlasik, K.F. ; Yurkin, Yu.T.

Author_Institution

Moscow Eng. Phys. State Inst., Russia

fYear

1997

Firstpage

102

Abstract

Spectrometric characteristics of High Pressure Xenon (HPXe) gamma-ray spectrometer “Ksenia” was studied during operation of this instrument onboard the orbital station “MIR”. The energy resolution of this spectrometer is 3.5±0.5% at E_γ=511 keV and stable during period from May 1990 till May 1997. The position of 511 keV gamma line is also stable (±1 channel or ±4 keV). The total number of trapped in radiation belt particles passing through the detector is 5·10⁹. The number of neutrons of atmospheric albino is 2·10¹⁰. No activated gamma-lines were found during the flight. After intensive activation (fluence of about 1.5·10¹⁰ neutrons) of a cylindrical HPXe spectrometer with a volume of Xe of about 6 liters few activated gamma-lines were registrated: E_γ=164 keV, T _½=11.92 from ¹³¹Xe_m; Eγ=236 keV, T_½=8.89 days from ¹²⁹Xe, and Eγ=847 keV, T_½=2.56 hours from ⁵⁶Mn. The intensity of these lines is not large so it is possible to operate HPXe spectrometers even after intense irradiation

Keywords

astronomical instruments; gamma-ray astronomy; gamma-ray spectrometers; 511 keV; 511 keV gamma line; HPXe gamma-ray spectrometer; Ksenia; MIR; Xe; cylindrical HPXe spectrometer; high pressure Xe gamma-ray spectrometers; radiation belt particles; radiation stability; Crystals; Energy resolution; Instruments; Ionizing radiation; Neutrons; Radiation detectors; Solid scintillation detectors; Spectroscopy; Stability; Xenon;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium, 1997. IEEE

ISSN

1082-3654

Print_ISBN

0-7803-4258-5

Type

conf

DOI

10.1109/NSSMIC.1997.672518

Filename

672518