EXPERIMENTAL SIMULATION OF FAST ELECTRON BOMBARDMENT OF METHANOL ICE AND ITS IMPLICATIONS IN ASTROCHEMISTRY

Detalhes bibliográficos
Autor(a) principal: Moreira Freitas, Fabricio
Data de Publicação: 2023
Outros Autores: Pilling, Sérgio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista UniVap (online)
Texto Completo: https://revista.univap.br/index.php/revistaunivap/article/view/4401
Resumo: In this work, we experimentally simulate the methanol (CH3OH) ice behavior (12 K) through the bombarded by fast electrons (4.9 keV) in an attempt to simulate radiation chemistry induced by radiation in space environments. The sample analysis by infrared spectroscopy reveals the appearance of new species, including CO2, CO, H2O, and CH4, during the sample bombardment. We have quantified the effective destruction cross-section of methanol (5.5 × 10-19 cm2) and determined the formation cross-section for these newly produced species. Additionally, we have characterized the chemical equilibrium (CE) phase, which becomes evident at higher fluences. We have also calculated molecular abundances and assessed the desorption yield induced by fast electrons within the same sample. Furthermore, we estimated the timescale required to achieve chemical equilibrium in specific astrophysical environments impacted by electrons. This study significantly contributes to our comprehension of electron bombardment behavior in astrophysical ices and allows for meaningful comparisons with organic-rich ices in space environments
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spelling EXPERIMENTAL SIMULATION OF FAST ELECTRON BOMBARDMENT OF METHANOL ICE AND ITS IMPLICATIONS IN ASTROCHEMISTRYSIMULAÇÃO EXPERIMENTAL DO BOMBARDEIO DE GELO DE METANOL POR ELÉTRONS RÁPIDOS E SUA IMPLICAÇÃO EM ASTROQUÍMICAAstrochemistryMethanolAstrophysical IceDesorptionLaboratory experimentsElectron bombardmentAstrochemistryAstroquímicaMetanolGelo astrofísicoDessorçãoExperimentos de laboratóriobombardeio por elétronsAstroquímicaIn this work, we experimentally simulate the methanol (CH3OH) ice behavior (12 K) through the bombarded by fast electrons (4.9 keV) in an attempt to simulate radiation chemistry induced by radiation in space environments. The sample analysis by infrared spectroscopy reveals the appearance of new species, including CO2, CO, H2O, and CH4, during the sample bombardment. We have quantified the effective destruction cross-section of methanol (5.5 × 10-19 cm2) and determined the formation cross-section for these newly produced species. Additionally, we have characterized the chemical equilibrium (CE) phase, which becomes evident at higher fluences. We have also calculated molecular abundances and assessed the desorption yield induced by fast electrons within the same sample. Furthermore, we estimated the timescale required to achieve chemical equilibrium in specific astrophysical environments impacted by electrons. This study significantly contributes to our comprehension of electron bombardment behavior in astrophysical ices and allows for meaningful comparisons with organic-rich ices in space environmentsNeste trabalho, simulamos experimentalmente o comportamento do gelo de metanol (CH3OH) numa temperatura de 12 K sob bombardeio de um feixe de elétrons rápidos (4.9 keV) na tentativa de reproduzir os processos fisioquímicos induzidos por elétrons em ambientes espaciais. A análise da amostra por espectroscopia infravermelha revela o surgimento de novas espécies, incluindo CO2, CO, H2O e CH4, devido ao processamento pela radiação ionizante. Quantificamos a seção de choque efetiva de destruição do metanol (5.5 × 10-19 cm2) e determinamos a seção choque efetiva de formação para as novas espécies produzidas. Além disso, caracterizamos a fase de equilíbrio químico (EQ), que se torna evidente em fluências mais altas. Calculamos também as abundâncias moleculares e avaliamos o rendimento de dessorção induzido por elétrons rápidos na amostra. Também foi estimado a escala de tempo necessária para atingir o equilíbrio químico em ambientes astrofísicos específicos impactados por elétrons. Este estudo contribui para uma melhor compreensão do efeito do bombardeio de elétrons em gelos astrofísicos e permite comparações significativas com os gelos ricos em compostos orgânicos em ambientes espaciaisIBICT2023-11-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPortuguêsinfo:eu-repo/semantics/otherapplication/pdfhttps://revista.univap.br/index.php/revistaunivap/article/view/440110.18066/revistaunivap.v29i61.4401Revista Univap; Vol. 29 No. 61 (2023): Revista UnivapRevista Univap; v. 29 n. 61 (2023): Revista Univap2237-17531517-327510.18066/revistaunivap.v29i61reponame:Revista UniVap (online)instname:Universidade do Vale do Paraíba (Univap)instacron:UNIVAPenghttps://revista.univap.br/index.php/revistaunivap/article/view/4401/2267Copyright (c) 2023 Revista Univaphttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessMoreira Freitas, Fabricio Pilling, Sérgio2023-10-02T18:53:02Zoai:ojs.biblioteca.univap.br:article/4401Revistahttps://revista.univap.br/index.php/revistaunivapPRIhttps://revista.univap.br/index.php/revistaunivap/oairevista@univap.br2237-17532237-1753opendoar:2023-10-02T18:53:02Revista UniVap (online) - Universidade do Vale do Paraíba (Univap)false
dc.title.none.fl_str_mv EXPERIMENTAL SIMULATION OF FAST ELECTRON BOMBARDMENT OF METHANOL ICE AND ITS IMPLICATIONS IN ASTROCHEMISTRY
SIMULAÇÃO EXPERIMENTAL DO BOMBARDEIO DE GELO DE METANOL POR ELÉTRONS RÁPIDOS E SUA IMPLICAÇÃO EM ASTROQUÍMICA
title EXPERIMENTAL SIMULATION OF FAST ELECTRON BOMBARDMENT OF METHANOL ICE AND ITS IMPLICATIONS IN ASTROCHEMISTRY
spellingShingle EXPERIMENTAL SIMULATION OF FAST ELECTRON BOMBARDMENT OF METHANOL ICE AND ITS IMPLICATIONS IN ASTROCHEMISTRY
Moreira Freitas, Fabricio
Astrochemistry
Methanol
Astrophysical Ice
Desorption
Laboratory experiments
Electron bombardment
Astrochemistry
Astroquímica
Metanol
Gelo astrofísico
Dessorção
Experimentos de laboratório
bombardeio por elétrons
Astroquímica
title_short EXPERIMENTAL SIMULATION OF FAST ELECTRON BOMBARDMENT OF METHANOL ICE AND ITS IMPLICATIONS IN ASTROCHEMISTRY
title_full EXPERIMENTAL SIMULATION OF FAST ELECTRON BOMBARDMENT OF METHANOL ICE AND ITS IMPLICATIONS IN ASTROCHEMISTRY
title_fullStr EXPERIMENTAL SIMULATION OF FAST ELECTRON BOMBARDMENT OF METHANOL ICE AND ITS IMPLICATIONS IN ASTROCHEMISTRY
title_full_unstemmed EXPERIMENTAL SIMULATION OF FAST ELECTRON BOMBARDMENT OF METHANOL ICE AND ITS IMPLICATIONS IN ASTROCHEMISTRY
title_sort EXPERIMENTAL SIMULATION OF FAST ELECTRON BOMBARDMENT OF METHANOL ICE AND ITS IMPLICATIONS IN ASTROCHEMISTRY
author Moreira Freitas, Fabricio
author_facet Moreira Freitas, Fabricio
Pilling, Sérgio
author_role author
author2 Pilling, Sérgio
author2_role author
dc.contributor.author.fl_str_mv Moreira Freitas, Fabricio
Pilling, Sérgio
dc.subject.por.fl_str_mv Astrochemistry
Methanol
Astrophysical Ice
Desorption
Laboratory experiments
Electron bombardment
Astrochemistry
Astroquímica
Metanol
Gelo astrofísico
Dessorção
Experimentos de laboratório
bombardeio por elétrons
Astroquímica
topic Astrochemistry
Methanol
Astrophysical Ice
Desorption
Laboratory experiments
Electron bombardment
Astrochemistry
Astroquímica
Metanol
Gelo astrofísico
Dessorção
Experimentos de laboratório
bombardeio por elétrons
Astroquímica
description In this work, we experimentally simulate the methanol (CH3OH) ice behavior (12 K) through the bombarded by fast electrons (4.9 keV) in an attempt to simulate radiation chemistry induced by radiation in space environments. The sample analysis by infrared spectroscopy reveals the appearance of new species, including CO2, CO, H2O, and CH4, during the sample bombardment. We have quantified the effective destruction cross-section of methanol (5.5 × 10-19 cm2) and determined the formation cross-section for these newly produced species. Additionally, we have characterized the chemical equilibrium (CE) phase, which becomes evident at higher fluences. We have also calculated molecular abundances and assessed the desorption yield induced by fast electrons within the same sample. Furthermore, we estimated the timescale required to achieve chemical equilibrium in specific astrophysical environments impacted by electrons. This study significantly contributes to our comprehension of electron bombardment behavior in astrophysical ices and allows for meaningful comparisons with organic-rich ices in space environments
publishDate 2023
dc.date.none.fl_str_mv 2023-11-14
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Português
info:eu-repo/semantics/other
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://revista.univap.br/index.php/revistaunivap/article/view/4401
10.18066/revistaunivap.v29i61.4401
url https://revista.univap.br/index.php/revistaunivap/article/view/4401
identifier_str_mv 10.18066/revistaunivap.v29i61.4401
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://revista.univap.br/index.php/revistaunivap/article/view/4401/2267
dc.rights.driver.fl_str_mv Copyright (c) 2023 Revista Univap
https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2023 Revista Univap
https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv IBICT
publisher.none.fl_str_mv IBICT
dc.source.none.fl_str_mv Revista Univap; Vol. 29 No. 61 (2023): Revista Univap
Revista Univap; v. 29 n. 61 (2023): Revista Univap
2237-1753
1517-3275
10.18066/revistaunivap.v29i61
reponame:Revista UniVap (online)
instname:Universidade do Vale do Paraíba (Univap)
instacron:UNIVAP
instname_str Universidade do Vale do Paraíba (Univap)
instacron_str UNIVAP
institution UNIVAP
reponame_str Revista UniVap (online)
collection Revista UniVap (online)
repository.name.fl_str_mv Revista UniVap (online) - Universidade do Vale do Paraíba (Univap)
repository.mail.fl_str_mv revista@univap.br
_version_ 1797042284661833728

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