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Neutron activation analysis of polyethylene from neutron shield of EDELWEISS experiment
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Alimardon V. Rakhimov
,
Viktor B. Brudanin
Published/Copyright:
May 19, 2015
Abstract
Instrumental neutron-activation analysis (INAA) was applied to estimate trace contaminations in polyethylene (PE) used as a neutron shield for low background setup of the EDELWEISS Dark Matter search experiment. PE samples with masses of 1–10 grams each were irradiated at the WWR-SM nuclear reactor by neutron flux of 1 · 1014 n/(cm2 s) for 5–48 h. The radioactivity was measured by high-resolution γ-ray spectrometry. In PE samples of two types, more than 30 trace elements were determined at a concentration level of 10−5 to 10–11 g/g.
Keywords: EDELWEISS experiment; neutron shield; polyethylene; instrumental neutron activation analysis
Acknowledgement
This work was partly supported by the Russian Foundation for Basic Research. Authors express thanks to the staff of LSM laboratory for providing help.
Received: 2014-11-5
Accepted: 2015-4-2
Published Online: 2015-5-19
Published in Print: 2015-9-28
©2015 Walter de Gruyter Berlin/Boston
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Keywords for this article
EDELWEISS experiment;
neutron shield;
polyethylene;
instrumental neutron activation analysis
Articles in the same Issue
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