Preliminary study of radionuclide standardization by TDCR method applying a time-to-amplitude converter
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2019
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INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE
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This paper proposes an alternative to the use of counters for the standardization of radionuclides in a
3-photodetectors liquid scintillation counter by the triple to double coincidence ratio (TDCR) method
using an electronic system for processing pulses that allows the subtraction of the accidental coincidences.
The electronic system consists of ampli ers, discriminators, logic gates and delay modules feeding a
time-to-amplitude converter (TAC) with output to a multichannel analyzer (MCA). This system does not
require individual counters for each photodetector and coincident counts contribute to the noise reduction.
The method compares 3 di erent TAC spectra registered in MCA with 4, 3 or 2 peaks obtained from
di erent con gurations of the electronic system. For testing the system, a series of measurements with a
90Sr standard solution was performed.
Como referenciar
MORAIS, THALES S.L. de; KOSKINAS, MARINA F.; MOREIRA, DENISE S.; DIAS, MAURO da S. Preliminary study of radionuclide standardization by TDCR method applying a time-to-amplitude converter. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 21-25, 2019, Santos, SP. Proceedings... Rio de Janeiro: Associação Brasileira de Energia Nuclear, 2019. p. 1147-1155. Disponível em: http://repositorio.ipen.br/handle/123456789/30552. Acesso em: 20 Apr 2024.
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.