Translator Disclaimer
16 September 1994 Measurement of background 0.1- to 2.0-MeV gamma-ray radiation onboard the orbital station MIR
Author Affiliations +
The high pressure xenon ionization chamber was designed for measurements gamma-ray lines from cosmic sources. This chamber was installed on board of the orbital station 'MIR' and the measurements are carried out. The 1 liter's chamber was filled with 0.6 g/cm3 density xenon. The energy resolution is 3% FWHM at energy 1 MeV. This experiment has been lasting for about four years on board of the heavy orbital station. Measured background gamma-ray spectra are presented. The background gamma- ray flux is mostly generated by interaction of cosmic rays with the vessel mass. A considerable abundance in energy region 170- 260 keV was registered. This abundance is produced by the radioactive source located in uranium shield on board of transport spacecraft. Also the 511 keV annihilation line was observed. Its intensity has obvious latitude dependence. Therefore it is generated by interaction of cosmic ray with the vessel matter. The strong gamma background decreases significantly the instrument sensibility to gamma-ray bursts.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
S. V. Krivov, Valery V. Dmitrenko, A. M. Galper, V. M. Grachev, V. I. Lyagushin, S. I. Sutchkov, Sergey E. Ulin, Z. M. Uteshev, K. F. Vlasik, and Yu. T. Yurkin "Measurement of background 0.1- to 2.0-MeV gamma-ray radiation onboard the orbital station MIR", Proc. SPIE 2280, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy V, (16 September 1994);

Back to Top