Antiproton, proton and electron impact multiple ionization of rare gases

We present a study on multiple ionization of Ne, Ar, Kr and Xe by antiproton, proton and electron impact. Four different aspects are involved in this work. First, the theoretical calculations of ionization probabilities by impact of antiprotons and protons, in an extended energy region (25 keV to 10...

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Autores principales: Montanari, C.C., Miraglia, J.E.
Formato: JOUR
Materias:
Branching ratio
Cross section
Distorted waves
Eikonal
Electron impact
Energy ranges
Energy regions
Experimental data
First Born approximation
High energy regions
High-impact velocities
Initial state
Ionization probabilities
Multiple ionization
Protons and antiprotons
Theoretical calculations
Total cross section
Total ionization cross sections
Augers
Born approximation
High energy physics
Protons
Impact ionization
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09534075_v45_n10_p_Montanari
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_09534075_v45_n10_p_Montanari2023-10-03T15:51:04Z Antiproton, proton and electron impact multiple ionization of rare gases Montanari, C.C. Miraglia, J.E. Branching ratio Cross section Distorted waves Eikonal Electron impact Energy ranges Energy regions Experimental data First Born approximation High energy regions High-impact velocities Initial state Ionization probabilities Multiple ionization Protons and antiprotons Theoretical calculations Total cross section Total ionization cross sections Augers Born approximation High energy physics Protons Impact ionization We present a study on multiple ionization of Ne, Ar, Kr and Xe by antiproton, proton and electron impact. Four different aspects are involved in this work. First, the theoretical calculations of ionization probabilities by impact of antiprotons and protons, in an extended energy region (25 keV to 10 MeV), using the continuum distorted-wave eikonal initial state approximation and the first Born approximation. Second, the inclusion of Auger-type post-collisional contributions through experimental photoionization branching ratios. These contributions to multiple ionization are very important in the high-energy region. Third, the comparison with the available experimental data on multiple ionization by protons and antiprotons in the extended energy range, and by electrons for high-impact velocities, where proton, antiproton and electron impact results are expected to converge. It is also the energy region where direct ionization does not explain the experimental results, and the post-collisional ionization is the main contribution to multiple ionization. And fourth, total ionization cross sections are calculated and compared with the antiproton, proton and electron experimental data, showing the importance of Auger-type multiple ionization for heavy targets even at the level of total cross sections. Gross and count cross sections are scrutinized. © 2012 IOP Publishing Ltd. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09534075_v45_n10_p_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 Branching ratio
Cross section
Distorted waves
Eikonal
Electron impact
Energy ranges
Energy regions
Experimental data
First Born approximation
High energy regions
High-impact velocities
Initial state
Ionization probabilities
Multiple ionization
Protons and antiprotons
Theoretical calculations
Total cross section
Total ionization cross sections
Augers
Born approximation
High energy physics
Protons
Impact ionization
spellingShingle Branching ratio
Cross section
Distorted waves
Eikonal
Electron impact
Energy ranges
Energy regions
Experimental data
First Born approximation
High energy regions
High-impact velocities
Initial state
Ionization probabilities
Multiple ionization
Protons and antiprotons
Theoretical calculations
Total cross section
Total ionization cross sections
Augers
Born approximation
High energy physics
Protons
Impact ionization
Montanari, C.C.
Miraglia, J.E.
Antiproton, proton and electron impact multiple ionization of rare gases
topic_facet Branching ratio
Cross section
Distorted waves
Eikonal
Electron impact
Energy ranges
Energy regions
Experimental data
First Born approximation
High energy regions
High-impact velocities
Initial state
Ionization probabilities
Multiple ionization
Protons and antiprotons
Theoretical calculations
Total cross section
Total ionization cross sections
Augers
Born approximation
High energy physics
Protons
Impact ionization
description We present a study on multiple ionization of Ne, Ar, Kr and Xe by antiproton, proton and electron impact. Four different aspects are involved in this work. First, the theoretical calculations of ionization probabilities by impact of antiprotons and protons, in an extended energy region (25 keV to 10 MeV), using the continuum distorted-wave eikonal initial state approximation and the first Born approximation. Second, the inclusion of Auger-type post-collisional contributions through experimental photoionization branching ratios. These contributions to multiple ionization are very important in the high-energy region. Third, the comparison with the available experimental data on multiple ionization by protons and antiprotons in the extended energy range, and by electrons for high-impact velocities, where proton, antiproton and electron impact results are expected to converge. It is also the energy region where direct ionization does not explain the experimental results, and the post-collisional ionization is the main contribution to multiple ionization. And fourth, total ionization cross sections are calculated and compared with the antiproton, proton and electron experimental data, showing the importance of Auger-type multiple ionization for heavy targets even at the level of total cross sections. Gross and count cross sections are scrutinized. © 2012 IOP Publishing Ltd.
format JOUR
author Montanari, C.C.
Miraglia, J.E.
author_facet Montanari, C.C.
Miraglia, J.E.
author_sort Montanari, C.C.
title Antiproton, proton and electron impact multiple ionization of rare gases
title_short Antiproton, proton and electron impact multiple ionization of rare gases
title_full Antiproton, proton and electron impact multiple ionization of rare gases
title_fullStr Antiproton, proton and electron impact multiple ionization of rare gases
title_full_unstemmed Antiproton, proton and electron impact multiple ionization of rare gases
title_sort antiproton, proton and electron impact multiple ionization of rare gases
url http://hdl.handle.net/20.500.12110/paper_09534075_v45_n10_p_Montanari
work_keys_str_mv AT montanaricc antiprotonprotonandelectronimpactmultipleionizationofraregases
AT miragliaje antiprotonprotonandelectronimpactmultipleionizationofraregases
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