Ionization of N2 in collisions with fast electrons: Evidence of an interference effect

Autores
Roy Chowdhury, Madhusree; Stia, Carlos Raul; Tachino, Carmen Alejandra; Fojon, Omar Ariel; Rivarola, Roberto Daniel; Tribedi, Lokesh C.
Año de publicación
2016
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción

Absolutedouble differential cross sections (DDCS) of electron emission weremeasured for ionization of N2 by fast electrons with energy 7 keV. Measurements wereperformed for different electron emission angles and energies.Evidence of oscillation due to Young-type interference was observedin the DDCS ratios for all angles. The frequency for large backwardangle is found to be larger compared to that for small forward angle.Consequently, the forward-backward asymmetry parameter reveals theoscillatory structure even more clearly. The oscillations observedfor both experimental-to-heoretical DDCS ratios and forward-backwardasymmetry were well explained by the Cohen-Fano model of interferencein a molecular double slit. A periodic deviation of the Cohen-Fanomodel from the asymmetry parameter data reveals the presence of ahigher-frequency component.The first Born model was employed to explain the results of molecularnitrogen for which a complete-neglect-of-differential-overlapapproximation was used along with an effective atomic number.


Fil: Roy Chowdhury, Madhusree. Tata Institute of Fundamental Research; India
Fil: Stia, Carlos Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Tachino, Carmen Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Fojon, Omar Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Rivarola, Roberto Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Tribedi, Lokesh C.. Tata Institute of Fundamental Research; India
Materia
Electron Impact
Interference Effects
Molecular Ionization
Nitrogen Molecules
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/50488
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/50488
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Ionization of N2 in collisions with fast electrons: Evidence of an interference effectRoy Chowdhury, MadhusreeStia, Carlos RaulTachino, Carmen AlejandraFojon, Omar ArielRivarola, Roberto DanielTribedi, Lokesh C.Electron ImpactInterference EffectsMolecular IonizationNitrogen Moleculeshttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1<style type="text/css">p { margin-bottom: 2.47mm; line-height: 120%; }</style><p style="margin-bottom: 0mm; line-height: 100%;"><font face="serif"><font size="2" style="font-size: 10pt;">Absolutedouble differential cross sections (DDCS) of electron emission weremeasured for ionization of N<font size="1" style="font-size: 6pt;">2 </font>by fast electrons with energy 7 keV. Measurements wereperformed for different electron emission angles and energies.Evidence of oscillation due to Young-type interference was observedin the DDCS ratios for all angles. The frequency for large backwardangle is found to be larger compared to that for small forward angle.Consequently, the forward-backward asymmetry parameter reveals theoscillatory structure even more clearly. The oscillations observedfor both experimental-to-heoretical DDCS ratios and forward-backwardasymmetry were well explained by the Cohen-Fano model of interferencein a molecular double slit. A periodic deviation of the Cohen-Fanomodel from the asymmetry parameter data reveals the presence of ahigher-frequency</font></font><font face="serif"><font size="2" style="font-size: 10pt;"> component.The first Born model was employed to explain the results of molecularnitrogen for which a complete-neglect-of-differential-overlapapproximation was used along with an effective atomic number.</font></font></p>Fil: Roy Chowdhury, Madhusree. Tata Institute of Fundamental Research; IndiaFil: Stia, Carlos Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Tachino, Carmen Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Fojon, Omar Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Rivarola, Roberto Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; ArgentinaFil: Tribedi, Lokesh C.. Tata Institute of Fundamental Research; IndiaAmerican Physical Society2016-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/50488Roy Chowdhury, Madhusree; Stia, Carlos Raul; Tachino, Carmen Alejandra; Fojon, Omar Ariel; Rivarola, Roberto Daniel; et al.; Ionization of N2 in collisions with fast electrons: Evidence of an interference effect; American Physical Society; Physical Review A: Atomic, Molecular and Optical Physics; 94; 5; 11-20161050-29472469-9934CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/pra/abstract/10.1103/PhysRevA.94.052703info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.94.052703info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-11-12T09:41:55Zoai:ri.conicet.gov.ar:11336/50488instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-11-12 09:41:56.066CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Ionization of N2 in collisions with fast electrons: Evidence of an interference effect
title Ionization of N2 in collisions with fast electrons: Evidence of an interference effect
spellingShingle Ionization of N2 in collisions with fast electrons: Evidence of an interference effect
Roy Chowdhury, Madhusree
Electron Impact
Interference Effects
Molecular Ionization
Nitrogen Molecules
title_short Ionization of N2 in collisions with fast electrons: Evidence of an interference effect
title_full Ionization of N2 in collisions with fast electrons: Evidence of an interference effect
title_fullStr Ionization of N2 in collisions with fast electrons: Evidence of an interference effect
title_full_unstemmed Ionization of N2 in collisions with fast electrons: Evidence of an interference effect
title_sort Ionization of N2 in collisions with fast electrons: Evidence of an interference effect
dc.creator.none.fl_str_mv Roy Chowdhury, Madhusree
Stia, Carlos Raul
Tachino, Carmen Alejandra
Fojon, Omar Ariel
Rivarola, Roberto Daniel
Tribedi, Lokesh C.
author Roy Chowdhury, Madhusree
author_facet Roy Chowdhury, Madhusree
Stia, Carlos Raul
Tachino, Carmen Alejandra
Fojon, Omar Ariel
Rivarola, Roberto Daniel
Tribedi, Lokesh C.
author_role author
author2 Stia, Carlos Raul
Tachino, Carmen Alejandra
Fojon, Omar Ariel
Rivarola, Roberto Daniel
Tribedi, Lokesh C.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Electron Impact
Interference Effects
Molecular Ionization
Nitrogen Molecules
topic Electron Impact
Interference Effects
Molecular Ionization
Nitrogen Molecules
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv <style type="text/css">p { margin-bottom: 2.47mm; line-height: 120%; }</style><p style="margin-bottom: 0mm; line-height: 100%;"><font face="serif"><font size="2" style="font-size: 10pt;">Absolutedouble differential cross sections (DDCS) of electron emission weremeasured for ionization of N<font size="1" style="font-size: 6pt;">2 </font>by fast electrons with energy 7 keV. Measurements wereperformed for different electron emission angles and energies.Evidence of oscillation due to Young-type interference was observedin the DDCS ratios for all angles. The frequency for large backwardangle is found to be larger compared to that for small forward angle.Consequently, the forward-backward asymmetry parameter reveals theoscillatory structure even more clearly. The oscillations observedfor both experimental-to-heoretical DDCS ratios and forward-backwardasymmetry were well explained by the Cohen-Fano model of interferencein a molecular double slit. A periodic deviation of the Cohen-Fanomodel from the asymmetry parameter data reveals the presence of ahigher-frequency</font></font><font face="serif"><font size="2" style="font-size: 10pt;"> component.The first Born model was employed to explain the results of molecularnitrogen for which a complete-neglect-of-differential-overlapapproximation was used along with an effective atomic number.</font></font></p>
Fil: Roy Chowdhury, Madhusree. Tata Institute of Fundamental Research; India
Fil: Stia, Carlos Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Tachino, Carmen Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Fojon, Omar Ariel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Rivarola, Roberto Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Física de Rosario. Universidad Nacional de Rosario. Instituto de Física de Rosario; Argentina
Fil: Tribedi, Lokesh C.. Tata Institute of Fundamental Research; India
description <style type="text/css">p { margin-bottom: 2.47mm; line-height: 120%; }</style><p style="margin-bottom: 0mm; line-height: 100%;"><font face="serif"><font size="2" style="font-size: 10pt;">Absolutedouble differential cross sections (DDCS) of electron emission weremeasured for ionization of N<font size="1" style="font-size: 6pt;">2 </font>by fast electrons with energy 7 keV. Measurements wereperformed for different electron emission angles and energies.Evidence of oscillation due to Young-type interference was observedin the DDCS ratios for all angles. The frequency for large backwardangle is found to be larger compared to that for small forward angle.Consequently, the forward-backward asymmetry parameter reveals theoscillatory structure even more clearly. The oscillations observedfor both experimental-to-heoretical DDCS ratios and forward-backwardasymmetry were well explained by the Cohen-Fano model of interferencein a molecular double slit. A periodic deviation of the Cohen-Fanomodel from the asymmetry parameter data reveals the presence of ahigher-frequency</font></font><font face="serif"><font size="2" style="font-size: 10pt;"> component.The first Born model was employed to explain the results of molecularnitrogen for which a complete-neglect-of-differential-overlapapproximation was used along with an effective atomic number.</font></font></p>
publishDate 2016
dc.date.none.fl_str_mv 2016-11
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/50488
Roy Chowdhury, Madhusree; Stia, Carlos Raul; Tachino, Carmen Alejandra; Fojon, Omar Ariel; Rivarola, Roberto Daniel; et al.; Ionization of N2 in collisions with fast electrons: Evidence of an interference effect; American Physical Society; Physical Review A: Atomic, Molecular and Optical Physics; 94; 5; 11-2016
1050-2947
2469-9934
CONICET Digital
CONICET
url http://hdl.handle.net/11336/50488
identifier_str_mv Roy Chowdhury, Madhusree; Stia, Carlos Raul; Tachino, Carmen Alejandra; Fojon, Omar Ariel; Rivarola, Roberto Daniel; et al.; Ionization of N2 in collisions with fast electrons: Evidence of an interference effect; American Physical Society; Physical Review A: Atomic, Molecular and Optical Physics; 94; 5; 11-2016
1050-2947
2469-9934
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://journals.aps.org/pra/abstract/10.1103/PhysRevA.94.052703
info:eu-repo/semantics/altIdentifier/doi/10.1103/PhysRevA.94.052703
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.107121

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