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dc.contributor.author
Galassi, Mariel Elisa
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dc.contributor.author
Tessaro, Veronica Belen
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dc.contributor.author
Gervais, B.
dc.contributor.author
Beuve, M.
dc.date.available
2023-08-22T17:49:00Z
dc.date.issued
2022-07
dc.identifier.citation
Galassi, Mariel Elisa; Tessaro, Veronica Belen; Gervais, B.; Beuve, M.; Theoretical multiple-ionization cross sections of Ne-like molecules by light-ion impact: H2 O; American Physical Society; Physical Review A; 106; 1; 7-2022; 1-10
dc.identifier.issn
2469-9934
dc.identifier.uri
http://hdl.handle.net/11336/208944
dc.description.abstract
We present a simple theoretical model to calculate multiple-ionization cross sections (MICS) of Ne and Ne-like molecules (molecules with ten electrons as H2O, CH4, NH3, and HF) for proton and light-ion impact, taking into account both direct and postcollisional emissions. In this paper, we tackle the case of water molecules, relevant to investigate the radiobiological effects of ion impact on living matter. The theory is developed in the framework of the independent electron model (IEM). To keep the model as simple as possible, we describe the impact parameter dependence of the single-particle ionization probabilities required by the IEM through decreasing exponential functions for each target orbital. We obtain the parameters of the exponential functions from the total net-ionization cross sections for each orbital by applying either the continuum distorted wave-eikonal initial-state (CDW-EIS) approximation or Rudd's model. We then calculate the contribution of Auger postcollisional electron emission to MICS by using the Ne postcollisional emission probabilities. This postcollisional treatment offers a very simple alternative to the much more complex molecular evaluation of postcollisional relaxation and provides results in close agreement with experimental data for proton and other light ions. We also demonstrate the relevance of considering postcollisional emission for water molecules after the 2a1 (2s Ne-like) orbital direct ionization.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Physical Society
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
IONIZATION
dc.subject
IONS
dc.subject
WATER
dc.subject.classification
Física Atómica, Molecular y Química
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Theoretical multiple-ionization cross sections of Ne-like molecules by light-ion impact: H2 O
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-07-17T17:50:45Z
dc.journal.volume
106
dc.journal.number
1
dc.journal.pagination
1-10
dc.journal.pais
Estados Unidos
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dc.description.fil
Fil: Galassi, Mariel Elisa. 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
dc.description.fil
Fil: Tessaro, Veronica Belen. 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
dc.description.fil
Fil: Gervais, B.. Centre National de la Recherche Scientifique; Francia
dc.description.fil
Fil: Beuve, M.. Universite Lyon 2; Francia
dc.journal.title
Physical Review A
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1103/PhysRevA.106.012823
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