Cosmogenic radionuclide production in NaI(Tl) crystals

arXiv:1411.0106v2.-- et al.

Detalhes bibliográficos
Autores: Amaré, J., Cuesta, C., Oliván, Montserrat, Pobes, Carlos
Tipo de documento: artigo
Estado:Versión enviada para evaluación y publicación
Data de publicação:2015
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/147593
Acesso em linha:http://hdl.handle.net/10261/147593
Access Level:Acceso aberto
Palavra-chave:Dark matter
Radionuclide production
NaI detectors
Cosmic-rays
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spelling Cosmogenic radionuclide production in NaI(Tl) crystalsAmaré, J.Cuesta, C.Oliván, MontserratPobes, CarlosDark matterRadionuclide productionNaI detectorsCosmic-raysarXiv:1411.0106v2.-- et al.The production of long-lived radioactive isotopes in materials due to the exposure to cosmic rays on Earth surface can be an hazard for experiments demanding ultra-low background conditions, typically performed deep underground. Production rates of cosmogenic isotopes in all the materials present in the experimental set-up, as well as the corresponding cosmic rays exposure history, must be both well known in order to assess the relevance of this effect in the achievable sensitivity of a given experiment. Although NaI(Tl) scintillators are being used in experiments aiming at the direct detection of dark matter since the first nineties of the last century, very few data about cosmogenic isotopes production rates have been published up to date. In this work we present data from two 12.5 kg NaI(Tl) detectors, developed in the frame of the ANAIS project, which were installed inside a convenient shielding at the Canfranc Underground Laboratory just after finishing surface exposure to cosmic rays. The very fast start of data taking allowed to identify and quantify isotopes with half-lives of the order of tens of days. Initial activities underground have been measured and then production rates at sea level have been estimated following the history of detectors; values of about a few tens of nuclei per kg and day for Te isotopes and 22Na and of a few hundreds for I isotopes have been found. These are the first direct estimates of production rates of cosmogenic nuclides in NaI crystals. A comparison of the so deduced rates with calculations using typical cosmic neutron flux at sea level and a carefully selected description of excitation functions will be also presented together with an estimate of the corresponding contribution to the background at low and high energies, which can be relevant for experiments aiming at rare events searches.This work has been supported by the Spanish Ministerio de Economía y Competitividad and the European Regional Development Fund (MINECO-FEDER) (FPA2011-23749), the Consolider-Ingenio 2010 Programme under grants MULTIDARK CSD2009-00064 and CPAN CSD2007-00042, and the Gobierno de Aragón (Group in Nuclear and Astroparticle Physics, ARAID Foundation and C. Cuesta predoctoral grant). C. Ginestra and P. Villar are supported by the MINECO Subprograma de Formación de Personal Investigador.Peer ReviewedInstitute of Physics PublishingMinisterio de Economía y Competitividad (España)European CommissionFundación Agencia Aragonesa para la Investigación y el DesarrolloGobierno de AragónCentro Nacional de Física de Partículas, Astropartículas y Nuclear (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2017201720152017info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Preprintinfo:eu-repo/semantics/submittedVersionhttp://hdl.handle.net/10261/147593reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1088/1475-7516/2015/02/046Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1475932026-05-22T06:33:51Z
dc.title.none.fl_str_mv Cosmogenic radionuclide production in NaI(Tl) crystals
title Cosmogenic radionuclide production in NaI(Tl) crystals
spellingShingle Cosmogenic radionuclide production in NaI(Tl) crystals
Amaré, J.
Dark matter
Radionuclide production
NaI detectors
Cosmic-rays
title_short Cosmogenic radionuclide production in NaI(Tl) crystals
title_full Cosmogenic radionuclide production in NaI(Tl) crystals
title_fullStr Cosmogenic radionuclide production in NaI(Tl) crystals
title_full_unstemmed Cosmogenic radionuclide production in NaI(Tl) crystals
title_sort Cosmogenic radionuclide production in NaI(Tl) crystals
dc.creator.none.fl_str_mv Amaré, J.
Cuesta, C.
Oliván, Montserrat
Pobes, Carlos
author Amaré, J.
author_facet Amaré, J.
Cuesta, C.
Oliván, Montserrat
Pobes, Carlos
author_role author
author2 Cuesta, C.
Oliván, Montserrat
Pobes, Carlos
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
European Commission
Fundación Agencia Aragonesa para la Investigación y el Desarrollo
Gobierno de Aragón
Centro Nacional de Física de Partículas, Astropartículas y Nuclear (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Dark matter
Radionuclide production
NaI detectors
Cosmic-rays
topic Dark matter
Radionuclide production
NaI detectors
Cosmic-rays
description arXiv:1411.0106v2.-- et al.
publishDate 2015
dc.date.none.fl_str_mv 2015
2017
2017
2017
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Preprint
info:eu-repo/semantics/submittedVersion
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/147593
url http://hdl.handle.net/10261/147593
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1088/1475-7516/2015/02/046
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Institute of Physics Publishing
publisher.none.fl_str_mv Institute of Physics Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.812455

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