Sorption and desorption of radioactive noble gases in polycarbonates

被引：44

作者：

Pressyanov, D. ^{[1
]}

Mitev, K. ^{[1
]}

Georgiev, S. ^{[1
]}

Dimitrova, I. ^{[1
]}

机构：

[1] St Kliment Ohridski Univ Sofia, Dept Atom Phys, Sofia 1164, Bulgaria

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2009年 / 598卷 / 02期

关键词：

Sorption; Desorption; Polycarbonates; (85)Kr; (133)Xe; (222)Rn; RADON; ABSORPTION; RN-222; DIFFUSION; MAKROFOL; PERMEABILITY; MEMBRANES; XE-133; WATER;

D O I：

10.1016/j.nima.2008.09.044

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The remarkable ability of some polycarbonates to absorb noble gases makes them an useful tool for measurements of radioactive noble gases. In this paper the kinetic of sorption and desorption processes is theoretically and experimentally studied. A theoretical model is proposed that considers diffusion and radioactive decay. Experimental results for (85)Kr, (133)Xe and (222)Rn are presented. They include experimental determination of the diffusion length of these radionuclides in polycarbonate and study of the time dependence of sorption and desorption processes. The experimental time dependence is in a very good agreement with the theoretical model. The conclusion is that the proposed model can be useful in practical applications. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：620 / 627

页数：8

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