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https://hdl.handle.net/10316/12896
Título: | Gas Proportional Scintillation Counter with Xenon and Xenon Mixtures | Autor: | Conde, C. A. N. Policarpo, A. J. P. L. Alves, M. A. F. |
Data: | 1968 | Editora: | IEEE | Citação: | IEEE Transactions on Nuclear Science 15:3 (1968) 84-91 | Resumo: | The light output of the recently developed gas proportional scintillation counter - a gas scintillation counter with light multiplication produced by a cylindrical geometry electric field - is investigated for heavy gaseous media under alpha particle excitation with a 56 UVP phototube. The gases used are Xe, and Xe-Ar and Xe-N2 mixtures for a wide range of concentrations, at a total pressure of about 965 Torr. The light output of the Xe-Ar mixtures shifts towards the ultraviolet (¿ ¿ 3250 Å) region as the electric field intensity increases. Xe-Ar mixtures with Xe concentrations ranging from about 1 to 10% give - with a p-quaterphenyl wavelength shifter - a light output more than two orders of magnitude larger than that of a CsI(T1) scintillator. In Xe-N2 mixtures - with wavelength shifter - nitrogen has a quenching effect. For the mixtures of noble gases the rise time of the secondary component of the light pulse is slow, typically 15 ¿s. Methane and nitrogen while having a quenching effect, reduce this rise time | URI: | https://hdl.handle.net/10316/12896 | ISSN: | 0018-9499 | DOI: | 10.1109/TNS.1968.4324919 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Física - Artigos em Revistas Internacionais |
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Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Gas Proportional Scintillation Counter.pdf | 1.65 MB | Adobe PDF | Ver/Abrir |
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