A collective model for inner shell ionization of very heavy targets

We present a theoretical study of the ionization of inner shells, such as L and M shells of Au, Pb and Bi or K-shell of Sb. The ionization is described using a collective response model, the shellwise local plasma approximation (SLPA). This model deals with each sub-shell of target electrons as an i...

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Autores principales: Montanari, Claudia Carmen, Mitnik, Dario Marcelo, Miraglia, Jorge Esteban
Publicado: 2011
Materias:
electrons
inner-shells
ionization
ions
Dirac equations
Experimental data
Hartree-Fock wave function
High energy
Inner shell
Inner-shell ionization
Ionization thresholds
K-shell ionization
K-shells
L-shell ionization
Response model
Target electrons
Theoretical study
Binding energy
Electron gas
Ions
Lead
Linear equations
Radiation effects
Shells (structures)
Wave functions
Ionization of gases
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10420150_v166_n5_p338_Montanari
http://hdl.handle.net/20.500.12110/paper_10420150_v166_n5_p338_Montanari
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_10420150_v166_n5_p338_Montanari
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spelling paper:paper_10420150_v166_n5_p338_Montanari2023-06-08T16:00:57Z A collective model for inner shell ionization of very heavy targets Montanari, Claudia Carmen Mitnik, Dario Marcelo Miraglia, Jorge Esteban electrons inner-shells ionization ions Dirac equations Experimental data Hartree-Fock wave function High energy Inner shell Inner-shell ionization inner-shells Ionization thresholds K-shell ionization K-shells L-shell ionization Response model Target electrons Theoretical study Binding energy Electron gas Ions Lead Linear equations Radiation effects Shells (structures) Wave functions Ionization of gases We present a theoretical study of the ionization of inner shells, such as L and M shells of Au, Pb and Bi or K-shell of Sb. The ionization is described using a collective response model, the shellwise local plasma approximation (SLPA). This model deals with each sub-shell of target electrons as an inhomogeneous electron gas with an ionization threshold. No parameters are included, just the theoretical wave functions of the ground state and the binding energies. The validity range is that of the perturbative approximation, high energies and asymmetric projectile target relation. In the case of Sb, known Hartree-Fock wave functions and energies are used. Instead, for Au, Pb and Bi, they were obtained in fully relativistic way by solving numerically the Dirac equation. The SLPA describes well the experimental data for K-shell ionization of Sb by O and F positive ions. However, it underestimates the data for C or lighter ions. Good results are obtained for M-shell ionization of Au and Bi above 2MeV/amu, and for L-shell ionization of Au and Pb above 10MeV/amu. For L- and M-shells, the SLPA tends to underestimate the data for energies below the range of validity of the model but approaches the experimental data for higher energies. © 2011 Taylor & Francis. Fil:Montanari, C.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mitnik, D.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Miraglia, J.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10420150_v166_n5_p338_Montanari http://hdl.handle.net/20.500.12110/paper_10420150_v166_n5_p338_Montanari
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic electrons
inner-shells
ionization
ions
Dirac equations
Experimental data
Hartree-Fock wave function
High energy
Inner shell
Inner-shell ionization
inner-shells
Ionization thresholds
K-shell ionization
K-shells
L-shell ionization
Response model
Target electrons
Theoretical study
Binding energy
Electron gas
Ions
Lead
Linear equations
Radiation effects
Shells (structures)
Wave functions
Ionization of gases
spellingShingle electrons
inner-shells
ionization
ions
Dirac equations
Experimental data
Hartree-Fock wave function
High energy
Inner shell
Inner-shell ionization
inner-shells
Ionization thresholds
K-shell ionization
K-shells
L-shell ionization
Response model
Target electrons
Theoretical study
Binding energy
Electron gas
Ions
Lead
Linear equations
Radiation effects
Shells (structures)
Wave functions
Ionization of gases
Montanari, Claudia Carmen
Mitnik, Dario Marcelo
Miraglia, Jorge Esteban
A collective model for inner shell ionization of very heavy targets
topic_facet electrons
inner-shells
ionization
ions
Dirac equations
Experimental data
Hartree-Fock wave function
High energy
Inner shell
Inner-shell ionization
inner-shells
Ionization thresholds
K-shell ionization
K-shells
L-shell ionization
Response model
Target electrons
Theoretical study
Binding energy
Electron gas
Ions
Lead
Linear equations
Radiation effects
Shells (structures)
Wave functions
Ionization of gases
description We present a theoretical study of the ionization of inner shells, such as L and M shells of Au, Pb and Bi or K-shell of Sb. The ionization is described using a collective response model, the shellwise local plasma approximation (SLPA). This model deals with each sub-shell of target electrons as an inhomogeneous electron gas with an ionization threshold. No parameters are included, just the theoretical wave functions of the ground state and the binding energies. The validity range is that of the perturbative approximation, high energies and asymmetric projectile target relation. In the case of Sb, known Hartree-Fock wave functions and energies are used. Instead, for Au, Pb and Bi, they were obtained in fully relativistic way by solving numerically the Dirac equation. The SLPA describes well the experimental data for K-shell ionization of Sb by O and F positive ions. However, it underestimates the data for C or lighter ions. Good results are obtained for M-shell ionization of Au and Bi above 2MeV/amu, and for L-shell ionization of Au and Pb above 10MeV/amu. For L- and M-shells, the SLPA tends to underestimate the data for energies below the range of validity of the model but approaches the experimental data for higher energies. © 2011 Taylor & Francis.
author Montanari, Claudia Carmen
Mitnik, Dario Marcelo
Miraglia, Jorge Esteban
author_facet Montanari, Claudia Carmen
Mitnik, Dario Marcelo
Miraglia, Jorge Esteban
author_sort Montanari, Claudia Carmen
title A collective model for inner shell ionization of very heavy targets
title_short A collective model for inner shell ionization of very heavy targets
title_full A collective model for inner shell ionization of very heavy targets
title_fullStr A collective model for inner shell ionization of very heavy targets
title_full_unstemmed A collective model for inner shell ionization of very heavy targets
title_sort collective model for inner shell ionization of very heavy targets
publishDate 2011
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10420150_v166_n5_p338_Montanari
http://hdl.handle.net/20.500.12110/paper_10420150_v166_n5_p338_Montanari
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AT mitnikdariomarcelo acollectivemodelforinnershellionizationofveryheavytargets
AT miragliajorgeesteban acollectivemodelforinnershellionizationofveryheavytargets
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AT mitnikdariomarcelo collectivemodelforinnershellionizationofveryheavytargets
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