18 October 1996 Bismuth germanate (BGO) array for spectroscopy of gamma pulse
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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.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fletcher J. Goldin, Edward J. McCrea, 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); doi: 10.1117/12.254003; https://doi.org/10.1117/12.254003

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