Standardization of sup(241)Am by means of coincidence system using 4 pi plastic scintillator detector
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2001
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REGIONAL CONGRESS ON RADIATION PROTECTION AND SAFETY, 5th, REGIONAL IRPA CONGRESS
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Resumo
A 4nt (a,(3)- y coincidence system using a plastic scintillator detector in 47t geometry has been
developed and applied for the standardization of 241Am. The scintillator shape and dimensions have
been optimized for maximum charge particle detection efficiency, while keeping background low and
a nearly constant gamma ray efficiency for different points at the radioactive source. The gamma ray events were measured with 3" x 3" NaI(Tl) scintillation counter. The electronic system for processing
pulses consisted of logic gates and delay modules feeding a Time to Amplitude Converter with output
to a Multichannel Analyser. The alpha detection efficiency measured with 241Am resulted around 95%
and the beta detection efficiency measured with 60Co was around 60%. Activity measurements of
241Am were compared with a conventional system employing a 4it proportional counter and showed
good agreement.
Como referenciar
BACCARELLI, A.M.; DIAS, M.S.; KOSKINAS, M.F. Standardization of sup(241)Am by means of coincidence system using 4 pi plastic scintillator detector. In: REGIONAL CONGRESS ON RADIATION PROTECTION AND SAFETY, 5th, REGIONAL IRPA CONGRESS, Apr. 29 - May 4, 2001, Recife, PE. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/15241. 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.