La determinazione della dose interna alfa e beta in ceramiche e terreni tramite rivelatori proporzionali a gas

Troja, S. O. and Cro, A. and Gueli, A. M. (1994) La determinazione della dose interna alfa e beta in ceramiche e terreni tramite rivelatori proporzionali a gas. Accademia Peloritana dei Pericolanti, Classe di Scienze FF. MM. NN., LXXII (Supplement 1). pp. 699-717.

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Abstract

The use of proportional gas detectors for determination of the alpha ( $\alpha$ ) and beta ( $\beta$ ) dose-rate (due to U, Th and K) of pottery and sediment samples in luminescence and E.S.R. dating was investigated. Alpha and beta count-rate measurements on standard powders of U, Th and K at two different counter voltages, low voltage in which the system detects $\alpha$ particles only and high voltage in which the system can detect and distinguish between both $\alpha$ and $\beta$ particles using differeni pulse height regions, allow the determination of conversion coefficients that relate count-rates to dose-rates in samples.
The conversion coefficients were applied to the $\alpha$ and $\beta$ count-rates measured on different types of test samples. Analysis of the results shows a remarkable accuracy in the evaluation of the $\beta$ dose-rates. However, under both measurement conditions (low and high voltage), the alpha dose-rates were found to deviate from the expected values to the extent that this procedure must be considered unusable at present.

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Item Type:	Article
Subjects:	M.U.S. - Miscellanea > Atti Accademia Peloritana > Classe di Scienze Fisiche, Matematiche e Naturali > 1994 > Supplemento 1 parte 2 M.U.S. - Miscellanea > Atti Accademia Peloritana > Classe di Scienze Medico-Biologiche > 1994 > Supplemento 1 parte 2 M.U.S. - Miscellanea > Atti Accademia Peloritana > Classe di Scienze Giuridiche, Economiche e Politiche > 1994 > Supplemento 1 parte 2 M.U.S. - Miscellanea > Atti Accademia Peloritana > Classe di Lettere Filosofia e belle Arti > 1994 > Supplemento 1 parte 2
Depositing User:	Mr Nunzio Femminò
Date Deposited:	18 Apr 2014 11:24
Last Modified:	18 Apr 2014 11:24
URI:	http://cab.unime.it/mus/id/eprint/5198

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