6533b828fe1ef96bd1287869

RESEARCH PRODUCT

A Ge(Li)Ge(Li) sum-peak (summing coincidence) spectrometer

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description

Abstract The sum-peak spectrometer (also called the integral-bias summing coincidence spectrometer) arrangement earlier developed with NaI(Tl) detectors is extended to Ge(Li) detectors. The integral-bias method in sorting sums of coincident pulse amplitudes is replaced by a set of pulse-height selection windows, which simply and more effectively aid in the analysis of sum-peak complexities associated with the symmetric linear summing procedure employed. A large part of the original information lost in summing of the pulse amplitudes can be retained by simultaneous sorting of the total spectrum into suitable subgroups. The arrangement represents in effect a real-time totalizing spectrometer having a limited memory capacity. A good running-time economy is achieved at the expense of advance and subsequent computer analysis. A high-efficiency geometry with virtually no crystal-to-crystal scattering is introduced. The performance of the new spectrometer system is demonstrated and discussed.