1 November 1990 Optimum shields for spaceborne gamma-ray spectrometers
Author Affiliations +
The optimum choice of a shield for space-borne gamma-ray spectrometers is investigated using Monte Carlo simulations. The results demonstrate that, for a given spectrometer configuration, a 'best' shield thickness exists which optimizes the spectrometer's background noise and increases its sensitivity. Such an optimization is achieved by a good understanding of the background sources of the spectrometer, and it varies from detector to detector and orbit to orbit. In general, a highly eccentric orbit is consistently better than LEO with regard to the leakage photon background. BGO seems to be a better shield material than CsI if multiple site events selection is applied.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fan Lei, Fan Lei, P. J. Knight, P. J. Knight, Anthony J. Dean, Anthony J. Dean, Philippe Durouchoux, Philippe Durouchoux, Pierre Wallyn, Pierre Wallyn, } "Optimum shields for spaceborne gamma-ray spectrometers", Proc. SPIE 1344, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy, (1 November 1990); doi: 10.1117/12.23279; https://doi.org/10.1117/12.23279

Back to Top