Low-level gas proportional counting in an underground laboratory

Loosli, H. H.; Heimann, Martin; Oeschger, Hans (1980). Low-level gas proportional counting in an underground laboratory. Radiocarbon, 22(2), pp. 461-469. Arizona Board of Regents, University of Arizona 10.1017/S0033822200009772

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Results of measurements in an underground laboratory, 70m of water equivalent below surface, are given. Background values of proportional gas counters with volumes between 16cc and 1.5L are lower by a factor of 2—4.5 compared to the values in the previously used laboratory (7m w.e.). High counting gas pressures, up to 5 at CH4 and up to 36 at P-10, enable the use of relatively small counters with correspondingly small background contributions from the walls. A separation of the residual background into different components is attempted, distinguishing a pressure dependent volume effect and surface correlated contributions. It can be shown that the selection of radioactively pure counter construction material is very important for a good low level counting system.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Physics Institute > Climate and Environmental Physics

UniBE Contributor:

Loosli, Heinz Hugo

Subjects:

500 Science > 530 Physics

ISSN:

0033-8222

Publisher:

Arizona Board of Regents, University of Arizona

Language:

English

Submitter:

BORIS Import 2

Date Deposited:

30 Aug 2021 09:43

Last Modified:

31 Aug 2021 09:57

Publisher DOI:

10.1017/S0033822200009772

BORIS DOI:

10.48350/158692

URI:

https://boris.unibe.ch/id/eprint/158692

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