Background in a balloon-borne fluorescence-gated proportional counter

Brian D. Ramsey; C. R. Bower; Kurtis L. Dietz; Martin C. Weisskopf

doi:10.1117/12.23245

1 November 1990 Background in a balloon-borne fluorescence-gated proportional counter

Brian D. Ramsey, C. R. Bower, Kurtis L. Dietz, Martin C. Weisskopf

Proceedings Volume 1344, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy; (1990) https://doi.org/10.1117/12.23245
Event: 34th Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1990, San Diego, CA, United States

Abstract

The results of an analysis of the background in a fluorescence-gated proportional counter operating over the energy range 3-150 keV are presented. It is found that the dominant background component is that produced by high energy qamma-rays that penetrate the shields and undergo multiple scattering in the detector body, resulting in photoelectric absorption in the detector gas. A careful choice of materials and thickness can move the peak of this emission outside of the detector sensitive range, thereby dramatically reducing the residual background.

Citation Download Citation

Brian D. Ramsey, C. R. Bower, Kurtis L. Dietz, and Martin C. Weisskopf "Background in a balloon-borne fluorescence-gated proportional counter", Proc. SPIE 1344, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy, (1 November 1990); https://doi.org/10.1117/12.23245

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