Gamma ray attenuation for determining soil density: laboratory experiments for Environmental Physics and Engineering courses

Detalhes bibliográficos
Autor(a) principal: Pires,L.F.
Data de Publicação: 2020
Outros Autores: Cássaro,F.A.M., Tech,L., Pereira,L.A.A., Oliveira,J.A.T. de
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Ensino de Física (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172020000100511
Resumo: Abstract In this paper, we present in details a method for determining the soil density of disturbed samples. The mass attenuation coefficient was also evaluated by using the relation between the number of photon counts and the path length (soil density \texttimes thickness). A typical student laboratory setup (PASCO) was utilized in the measurements. A gamma ray source of 137 Cs and soils with four different textural classes were employed. The experimental apparatus here proposed, that uses an educational gamma ray attenuation system, permitted measuring, with very good agreement with the traditional method, the density of soil samples. The experiment can be somehow extended by proposing the investigation of soil bulk variations due, for instance, to soil compaction, a subject of interest for engineering and environmental physics students.
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spelling Gamma ray attenuation for determining soil density: laboratory experiments for Environmental Physics and Engineering courses137Cs gamma ray photonsSoil mass attenuation coefficientXCOMSoil chemical compositionAbstract In this paper, we present in details a method for determining the soil density of disturbed samples. The mass attenuation coefficient was also evaluated by using the relation between the number of photon counts and the path length (soil density \texttimes thickness). A typical student laboratory setup (PASCO) was utilized in the measurements. A gamma ray source of 137 Cs and soils with four different textural classes were employed. The experimental apparatus here proposed, that uses an educational gamma ray attenuation system, permitted measuring, with very good agreement with the traditional method, the density of soil samples. The experiment can be somehow extended by proposing the investigation of soil bulk variations due, for instance, to soil compaction, a subject of interest for engineering and environmental physics students.Sociedade Brasileira de Física2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172020000100511Revista Brasileira de Ensino de Física v.42 2020reponame:Revista Brasileira de Ensino de Física (Online)instname:Sociedade Brasileira de Física (SBF)instacron:SBF10.1590/1806-9126-rbef-2019-0340info:eu-repo/semantics/openAccessPires,L.F.Cássaro,F.A.M.Tech,L.Pereira,L.A.A.Oliveira,J.A.T. deeng2020-03-10T00:00:00Zoai:scielo:S1806-11172020000100511Revistahttp://www.sbfisica.org.br/rbef/https://old.scielo.br/oai/scielo-oai.php||marcio@sbfisica.org.br1806-91261806-1117opendoar:2020-03-10T00:00Revista Brasileira de Ensino de Física (Online) - Sociedade Brasileira de Física (SBF)false
dc.title.none.fl_str_mv Gamma ray attenuation for determining soil density: laboratory experiments for Environmental Physics and Engineering courses
title Gamma ray attenuation for determining soil density: laboratory experiments for Environmental Physics and Engineering courses
spellingShingle Gamma ray attenuation for determining soil density: laboratory experiments for Environmental Physics and Engineering courses
Pires,L.F.
137Cs gamma ray photons
Soil mass attenuation coefficient
XCOM
Soil chemical composition
title_short Gamma ray attenuation for determining soil density: laboratory experiments for Environmental Physics and Engineering courses
title_full Gamma ray attenuation for determining soil density: laboratory experiments for Environmental Physics and Engineering courses
title_fullStr Gamma ray attenuation for determining soil density: laboratory experiments for Environmental Physics and Engineering courses
title_full_unstemmed Gamma ray attenuation for determining soil density: laboratory experiments for Environmental Physics and Engineering courses
title_sort Gamma ray attenuation for determining soil density: laboratory experiments for Environmental Physics and Engineering courses
author Pires,L.F.
author_facet Pires,L.F.
Cássaro,F.A.M.
Tech,L.
Pereira,L.A.A.
Oliveira,J.A.T. de
author_role author
author2 Cássaro,F.A.M.
Tech,L.
Pereira,L.A.A.
Oliveira,J.A.T. de
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Pires,L.F.
Cássaro,F.A.M.
Tech,L.
Pereira,L.A.A.
Oliveira,J.A.T. de
dc.subject.por.fl_str_mv 137Cs gamma ray photons
Soil mass attenuation coefficient
XCOM
Soil chemical composition
topic 137Cs gamma ray photons
Soil mass attenuation coefficient
XCOM
Soil chemical composition
description Abstract In this paper, we present in details a method for determining the soil density of disturbed samples. The mass attenuation coefficient was also evaluated by using the relation between the number of photon counts and the path length (soil density \texttimes thickness). A typical student laboratory setup (PASCO) was utilized in the measurements. A gamma ray source of 137 Cs and soils with four different textural classes were employed. The experimental apparatus here proposed, that uses an educational gamma ray attenuation system, permitted measuring, with very good agreement with the traditional method, the density of soil samples. The experiment can be somehow extended by proposing the investigation of soil bulk variations due, for instance, to soil compaction, a subject of interest for engineering and environmental physics students.
publishDate 2020
dc.date.none.fl_str_mv 2020-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172020000100511
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dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1806-9126-rbef-2019-0340
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Física
publisher.none.fl_str_mv Sociedade Brasileira de Física
dc.source.none.fl_str_mv Revista Brasileira de Ensino de Física v.42 2020
reponame:Revista Brasileira de Ensino de Física (Online)
instname:Sociedade Brasileira de Física (SBF)
instacron:SBF
instname_str Sociedade Brasileira de Física (SBF)
instacron_str SBF
institution SBF
reponame_str Revista Brasileira de Ensino de Física (Online)
collection Revista Brasileira de Ensino de Física (Online)
repository.name.fl_str_mv Revista Brasileira de Ensino de Física (Online) - Sociedade Brasileira de Física (SBF)
repository.mail.fl_str_mv ||marcio@sbfisica.org.br
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