Bismuth Germanate (BGO) array for spectroscopy of gamma pulse

Fletcher J. Goldin; Edward J. McCrea; Richard E. Stewart

doi:10.1117/12.254003

18 October 1996 Bismuth germanate (BGO) array for spectroscopy of gamma pulse

Fletcher J. Goldin, Edward J. McCrea, Richard E. Stewart

Proceedings Volume 2806, Gamma-Ray and Cosmic-Ray Detectors, Techniques, and Missions; (1996) https://doi.org/10.1117/12.254003
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

For a sufficiently short gamma pulse, pile-up prohibits conventional PHA spectroscopy, which depends on temporal separation to distinguish individual counts. For such pulse applications, we are developing a spectrometer which detects and records individual gamma photon signals simultaneously in independent parallel channels. This is a two-dimensional array of BGO scintillation elements, each of which is a high-aspect ratio, square-section cylinder. The elements are closely packed in a regular rectangular array, and separated by reflective walls which optically isolate the elements and channel the visible light to the end. The array is oriented with the elements end-on to the gamma source. The downstream array face is imaged, and a histogram of the light levels of the individual elements corresponds to a gamma spectrum. We report on tests performed on the array component intended for such a system.

Citation Download Citation

Fletcher J. Goldin, Edward J. McCrea, and Richard E. Stewart "Bismuth germanate (BGO) array for spectroscopy of gamma pulse", Proc. SPIE 2806, Gamma-Ray and Cosmic-Ray Detectors, Techniques, and Missions, (18 October 1996); https://doi.org/10.1117/12.254003

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