Evaluation of the utilization of flat ionization chamber as monitor chamber
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2008
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INTERNATIONAL CONGRESS OF THE INTERNATIONAL RADIATION PROTECTION ASSOCIATION, 12th
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This work continues the study initiated in 2003 of the PTW 77335 ionization chamber, showing their
performance and functionality to be used as transmission chamber. Those chambers have the same characteristic
of monitor chamber. They are flat kind with 112cm3 of volume, graphite window with thickness of 170µm and
polarizing voltage of 100V. The chambers were named A and B, and they were connected to an electrometer
Unidos also of PTW, and a 14C as a check source. The repeatibility test consists in 10 measurements in fix and
repeated conditions. This test shows the behaviour of the ionization chamber in short time. To verify their long
time stability, this test was made for 6 months. The results showed a good performance of the chamber model
77335 to be used as transmission chamber, as published before. The stability test showed that the chamber A (s.
1870) had a variation of 0.16 % and the chamber B (s.1868) 0.20%. The long time measurements showed a
variation of +/- 1.8 % for chamber A and +/-1.6 for chamber B. The values showed the functionality of the
chamber to be used as transmission chamber. The results showed good performance of the studied chambers,
therefore, the continuing evaluation is needed to guarantee the quality of the results showed until now.
Como referenciar
MIRANDA, JUREMA A.; POTIENS, MARIA da P.A. Evaluation of the utilization of flat ionization chamber as monitor chamber. In: INTERNATIONAL CONGRESS OF THE INTERNATIONAL RADIATION PROTECTION ASSOCIATION, 12th, October 19-24, 2008, Buenos Aires, Argentina. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/15924. 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.