Gamma ray attenuation for determining soil density: laboratory experiments for Environmental Physics and Engineering courses
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
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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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 |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172020000100511 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172020000100511 |
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 |
eu_rights_str_mv |
openAccess |
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 |
_version_ |
1752122424830197760 |