Theoretical description of two- and three-particle interactions in single ionization of helium by ion impact

M. F. Ciappina; W. R. Cravero; M. Schulz; R. Moshammer; J. Ullrich

doi:10.1103/PhysRevA.74.042702

Theoretical description of two- and three-particle interactions in single ionization of helium by ion impact

M. F. Ciappina^*, W. R. Cravero, M. Schulz, R. Moshammer, J. Ullrich

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

In this work we calculate doubly differential cross sections (DDCS) for single ionization of helium by highly charged ion impact. We study the importance of two-particle interactions in these processes by considering the cross sections as a function of all two-particle subsystems momenta. Experimental DDCSs were obtained recently from kinematically complete experiments on single ionization of He by 100 MeV amu C6+ and 3.6 MeV amu Au24,53+ impact. Furthermore, we evaluated the importance of three-particle interactions by plotting the squared momenta of all three collision fragments simultaneously in a Dalitz plot. Using the first Born and distorted-wave approximations for fully differential cross sections, together with Monte Carlo integration techniques, we were able to reproduce the main features observed in experimental data and to assess the quality of the models implied by the different employed approximations.

Original language	English
Article number	042702
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	74
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevA.74.042702
State	Published - 2006
Externally published	Yes

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title = "Theoretical description of two- and three-particle interactions in single ionization of helium by ion impact",

abstract = "In this work we calculate doubly differential cross sections (DDCS) for single ionization of helium by highly charged ion impact. We study the importance of two-particle interactions in these processes by considering the cross sections as a function of all two-particle subsystems momenta. Experimental DDCSs were obtained recently from kinematically complete experiments on single ionization of He by 100 MeV amu C6+ and 3.6 MeV amu Au24,53+ impact. Furthermore, we evaluated the importance of three-particle interactions by plotting the squared momenta of all three collision fragments simultaneously in a Dalitz plot. Using the first Born and distorted-wave approximations for fully differential cross sections, together with Monte Carlo integration techniques, we were able to reproduce the main features observed in experimental data and to assess the quality of the models implied by the different employed approximations.",

author = "Ciappina, {M. F.} and Cravero, {W. R.} and M. Schulz and R. Moshammer and J. Ullrich",

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T1 - Theoretical description of two- and three-particle interactions in single ionization of helium by ion impact

AU - Ciappina, M. F.

AU - Cravero, W. R.

AU - Schulz, M.

AU - Moshammer, R.

AU - Ullrich, J.

PY - 2006

Y1 - 2006

N2 - In this work we calculate doubly differential cross sections (DDCS) for single ionization of helium by highly charged ion impact. We study the importance of two-particle interactions in these processes by considering the cross sections as a function of all two-particle subsystems momenta. Experimental DDCSs were obtained recently from kinematically complete experiments on single ionization of He by 100 MeV amu C6+ and 3.6 MeV amu Au24,53+ impact. Furthermore, we evaluated the importance of three-particle interactions by plotting the squared momenta of all three collision fragments simultaneously in a Dalitz plot. Using the first Born and distorted-wave approximations for fully differential cross sections, together with Monte Carlo integration techniques, we were able to reproduce the main features observed in experimental data and to assess the quality of the models implied by the different employed approximations.

AB - In this work we calculate doubly differential cross sections (DDCS) for single ionization of helium by highly charged ion impact. We study the importance of two-particle interactions in these processes by considering the cross sections as a function of all two-particle subsystems momenta. Experimental DDCSs were obtained recently from kinematically complete experiments on single ionization of He by 100 MeV amu C6+ and 3.6 MeV amu Au24,53+ impact. Furthermore, we evaluated the importance of three-particle interactions by plotting the squared momenta of all three collision fragments simultaneously in a Dalitz plot. Using the first Born and distorted-wave approximations for fully differential cross sections, together with Monte Carlo integration techniques, we were able to reproduce the main features observed in experimental data and to assess the quality of the models implied by the different employed approximations.

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DO - 10.1103/PhysRevA.74.042702

M3 - 文章

AN - SCOPUS:33749344618

SN - 1050-2947

VL - 74

JO - Physical Review A - Atomic, Molecular, and Optical Physics

JF - Physical Review A - Atomic, Molecular, and Optical Physics

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ER -

Theoretical description of two- and three-particle interactions in single ionization of helium by ion impact

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