Comprehensive study of radon progeny attachment to surfaces

Chernyak, D.; Howell, J.; Majumdar, D.; Mukherjee, N.; Nusair, O.; Piepke, A.

doi:10.1103/physrevc.107.065802

Title: Comprehensive study of radon progeny attachment to surfaces

Journal Article · Mon Jun 05 00:00:00 EDT 2023 · Physical Review. C

DOI:https://doi.org/10.1103/physrevc.107.065802· OSTI ID:1976158

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University of Alabama, Tuscaloosa, AL (United States)
University of Alabama, Tuscaloosa, AL (United States); University of Tennessee, Knoxville, TN (United States)

Low energy, low rate experiments, such as searches for neutrinoless double β decay and dark matter, require unprecedentedly low levels of background in order to deliver their full science potential. ²¹⁰Po driven, neutron induced background, caused by nuclear (α, n) reactions on low-Z materials, direct background contributions of the ²¹⁰Po α radiation and desorption of the ²¹⁰Pb progeny ²¹⁰Bi from surfaces into the detector medium are of particular of concern. These backgrounds depend on details of the components’ exposure to radon-loaded laboratory air and, thus, their handling history. The attachment rates of airborne radon progeny to surfaces, needed for the estimation of these background rates, are poorly understood. This article reports the results of a campaign comprising of more than 1200 attachment measurements, performed for nine different materials. Correlations of the attachment with environmental parameters such as air exchange rate, electrical surface potential, temperature, atmospheric pressure, and relative humidity have been studied and found to be significant only in case of the first two. Attachment modeling, using the Jacobi model, is compared to data.

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Research Organization:: Univ. of Alabama, Tuscaloosa, AL (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: FG02-01ER41166

OSTI ID:: 1976158

Journal Information:: Physical Review. C, Vol. 107, Issue 6; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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