Efficiency loss in HPGe detectors due to beta and gamma sum coincidence
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Brazilian Journal of Physics
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Among the secondary detection effects in gamma-ray spectroscopy with HPGe detectors that reduce the peak
area and must be properly taken into account in accurate measurements, the less well known is counting loss
by beta and gamma-ray sum coincidence. The fraction of lost counts was estimated assuming that a photon
detection event can sum either with the coincident beta-ray or its bremsstrahlung in the detector capsule or surrounding materials. The beta-ray was tracked through all the materials between source and detector. The result
was calculated as a sequence of integral expressions evaluated numerically, without resorting to simulation. It
is shown that the counting losses due to this effect are negligible for most calibration sources in typical detector
arrangements.
Como referenciar
CASTRO, RUY M.; VANIN, VITO R.; MAIDANA, NORA L.; PASCHOLATI, PAULO R.; DIAS, MAURO S.; KOSKINAS, MARINA F. Efficiency loss in HPGe detectors due to beta and gamma sum coincidence. Brazilian Journal of Physics, v. 35, n. 3B, p. 754-756, 2005. DOI: 10.1590/S0103-97332005000500008. Disponível em: http://repositorio.ipen.br/handle/123456789/7671. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.