High resolution zero degree electron spectroscopy of argon ions through carbon foil
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Physics |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000400012 |
Resumo: | Electrons emitted from high Rydberg states formed by penetration of 2.0 MeV/u Ar6, 13, 14, 15+ ions through C-foil targets of various thicknesses (4.0 - 20 µg/cm²) have been measured with high resolution utilizing zero-degree electron spectroscopy. Intense series of Coster-Kronig peaks due to Ar14+ 1s²2p(²P3/2,1/2)nl - 1s²2s(²S1/2)epsilonl' and Ar13+ 1s²2s2p(³P2,1,0)nl - 1s²2s² (¹S0)epsilonl' transitions, in which the principal quantum number, n, starts at 10 and increases with increasing peak energy, have been observed for every combination of initial charge state and foil thickness, and quite a few number of other peaks remain unassigned in the electron energy region investigated. Intensities of each series of Coster-Kronig electron peaks follow the n-3 law. The mean charge states after the foil penetration have been found to be the same within 10% uncertainty and the total intensity of the Coster-Kronig transitions including Ar15+ 1s²2p(²P) and Ar14+ 1s²2s2p(³P) cores have also been found to remain constant for all the collision systems investigated. The total Ar15+ 1s²2p(²P) population derived from n = 10 transition peaks is found to be almost the same as those of Ar14+ 1s²2s2p(³P), which is in contrast to the ratio of Ar15+ to Ar14+ fractions measured downstream the foil. |
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High resolution zero degree electron spectroscopy of argon ions through carbon foilRydberg stateCoster-Kronig transitionCharge stateDensity effectElectrons emitted from high Rydberg states formed by penetration of 2.0 MeV/u Ar6, 13, 14, 15+ ions through C-foil targets of various thicknesses (4.0 - 20 µg/cm²) have been measured with high resolution utilizing zero-degree electron spectroscopy. Intense series of Coster-Kronig peaks due to Ar14+ 1s²2p(²P3/2,1/2)nl - 1s²2s(²S1/2)epsilonl' and Ar13+ 1s²2s2p(³P2,1,0)nl - 1s²2s² (¹S0)epsilonl' transitions, in which the principal quantum number, n, starts at 10 and increases with increasing peak energy, have been observed for every combination of initial charge state and foil thickness, and quite a few number of other peaks remain unassigned in the electron energy region investigated. Intensities of each series of Coster-Kronig electron peaks follow the n-3 law. The mean charge states after the foil penetration have been found to be the same within 10% uncertainty and the total intensity of the Coster-Kronig transitions including Ar15+ 1s²2p(²P) and Ar14+ 1s²2s2p(³P) cores have also been found to remain constant for all the collision systems investigated. The total Ar15+ 1s²2p(²P) population derived from n = 10 transition peaks is found to be almost the same as those of Ar14+ 1s²2s2p(³P), which is in contrast to the ratio of Ar15+ to Ar14+ fractions measured downstream the foil.Sociedade Brasileira de Física2006-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000400012Brazilian Journal of Physics v.36 n.2b 2006reponame:Brazilian Journal of Physicsinstname:Sociedade Brasileira de Física (SBF)instacron:SBF10.1590/S0103-97332006000400012info:eu-repo/semantics/openAccessImai,M.Sataka,M.Kawatsura,K.Takahiro,K.Komaki,K.Shibata,H.eng2006-07-31T00:00:00Zoai:scielo:S0103-97332006000400012Revistahttp://www.sbfisica.org.br/v1/home/index.php/pt/ONGhttps://old.scielo.br/oai/scielo-oai.phpsbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br1678-44480103-9733opendoar:2006-07-31T00:00Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF)false |
dc.title.none.fl_str_mv |
High resolution zero degree electron spectroscopy of argon ions through carbon foil |
title |
High resolution zero degree electron spectroscopy of argon ions through carbon foil |
spellingShingle |
High resolution zero degree electron spectroscopy of argon ions through carbon foil Imai,M. Rydberg state Coster-Kronig transition Charge state Density effect |
title_short |
High resolution zero degree electron spectroscopy of argon ions through carbon foil |
title_full |
High resolution zero degree electron spectroscopy of argon ions through carbon foil |
title_fullStr |
High resolution zero degree electron spectroscopy of argon ions through carbon foil |
title_full_unstemmed |
High resolution zero degree electron spectroscopy of argon ions through carbon foil |
title_sort |
High resolution zero degree electron spectroscopy of argon ions through carbon foil |
author |
Imai,M. |
author_facet |
Imai,M. Sataka,M. Kawatsura,K. Takahiro,K. Komaki,K. Shibata,H. |
author_role |
author |
author2 |
Sataka,M. Kawatsura,K. Takahiro,K. Komaki,K. Shibata,H. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Imai,M. Sataka,M. Kawatsura,K. Takahiro,K. Komaki,K. Shibata,H. |
dc.subject.por.fl_str_mv |
Rydberg state Coster-Kronig transition Charge state Density effect |
topic |
Rydberg state Coster-Kronig transition Charge state Density effect |
description |
Electrons emitted from high Rydberg states formed by penetration of 2.0 MeV/u Ar6, 13, 14, 15+ ions through C-foil targets of various thicknesses (4.0 - 20 µg/cm²) have been measured with high resolution utilizing zero-degree electron spectroscopy. Intense series of Coster-Kronig peaks due to Ar14+ 1s²2p(²P3/2,1/2)nl - 1s²2s(²S1/2)epsilonl' and Ar13+ 1s²2s2p(³P2,1,0)nl - 1s²2s² (¹S0)epsilonl' transitions, in which the principal quantum number, n, starts at 10 and increases with increasing peak energy, have been observed for every combination of initial charge state and foil thickness, and quite a few number of other peaks remain unassigned in the electron energy region investigated. Intensities of each series of Coster-Kronig electron peaks follow the n-3 law. The mean charge states after the foil penetration have been found to be the same within 10% uncertainty and the total intensity of the Coster-Kronig transitions including Ar15+ 1s²2p(²P) and Ar14+ 1s²2s2p(³P) cores have also been found to remain constant for all the collision systems investigated. The total Ar15+ 1s²2p(²P) population derived from n = 10 transition peaks is found to be almost the same as those of Ar14+ 1s²2s2p(³P), which is in contrast to the ratio of Ar15+ to Ar14+ fractions measured downstream the foil. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-06-01 |
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=S0103-97332006000400012 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332006000400012 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-97332006000400012 |
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 |
Brazilian Journal of Physics v.36 n.2b 2006 reponame:Brazilian Journal of Physics instname:Sociedade Brasileira de Física (SBF) instacron:SBF |
instname_str |
Sociedade Brasileira de Física (SBF) |
instacron_str |
SBF |
institution |
SBF |
reponame_str |
Brazilian Journal of Physics |
collection |
Brazilian Journal of Physics |
repository.name.fl_str_mv |
Brazilian Journal of Physics - Sociedade Brasileira de Física (SBF) |
repository.mail.fl_str_mv |
sbfisica@sbfisica.org.br||sbfisica@sbfisica.org.br |
_version_ |
1754734863007612928 |