Fully differential cross sections for Li2+-impact ionization of Li(2s) and Li(2p)

Omid Ghorbani; Ebrahim Ghanbari-Adivi; Marcelo Fabian Ciappina

doi:10.1088/1361-6455/aab879

Fully differential cross sections for Li²⁺-impact ionization of Li(2s) and Li(2p)

Omid Ghorbani, Ebrahim Ghanbari-Adivi, Marcelo Fabian Ciappina

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

2 Scopus citations

Abstract

A semiclassical impact parameter version of the continuum distorted wave-Eikonal initial state theory is developed to study the differential ionization of Li atoms in collisions with Li²⁺ ions. Both post and prior forms of the transition amplitude are considered. The fully differential cross sections are calculated for the lithium targets in their ground and their first excited states and for the projectile ions at 16 MeV impact energy. The role of the inter-nuclear interaction as well as the significance of the post-prior discrepancy in the ejected electron spectra are investigated. The obtained results for ejection of the electron into the azimuthal plane are compared with the recent measurements and with their corresponding values obtained using a fully quantum mechanical version of the theory. In most of the cases, the consistency of the present approach with the experimental and the quantum theoretical data is reasonable. However, for 2p-state ionization, in the cases where no experimental data exist, there is a considerable difference between the two theoretical approaches. This difference is questionable and further experiments are needed to judge which theory makes a more accurate description of the collision dynamics.

Original language	English
Article number	095202
Journal	Journal of Physics B: Atomic, Molecular and Optical Physics
Volume	51
Issue number	9
DOIs	https://doi.org/10.1088/1361-6455/aab879
State	Published - 16 Apr 2018
Externally published	Yes

Keywords

3DW-EIS theory
CDW-EIS approach
binary peak
fully differential cross sections
ionization

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10.1088/1361-6455/aab879

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title = "Fully differential cross sections for Li2+-impact ionization of Li(2s) and Li(2p)",

abstract = "A semiclassical impact parameter version of the continuum distorted wave-Eikonal initial state theory is developed to study the differential ionization of Li atoms in collisions with Li2+ ions. Both post and prior forms of the transition amplitude are considered. The fully differential cross sections are calculated for the lithium targets in their ground and their first excited states and for the projectile ions at 16 MeV impact energy. The role of the inter-nuclear interaction as well as the significance of the post-prior discrepancy in the ejected electron spectra are investigated. The obtained results for ejection of the electron into the azimuthal plane are compared with the recent measurements and with their corresponding values obtained using a fully quantum mechanical version of the theory. In most of the cases, the consistency of the present approach with the experimental and the quantum theoretical data is reasonable. However, for 2p-state ionization, in the cases where no experimental data exist, there is a considerable difference between the two theoretical approaches. This difference is questionable and further experiments are needed to judge which theory makes a more accurate description of the collision dynamics.",

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author = "Omid Ghorbani and Ebrahim Ghanbari-Adivi and Ciappina, {Marcelo Fabian}",

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AU - Ghorbani, Omid

AU - Ghanbari-Adivi, Ebrahim

AU - Ciappina, Marcelo Fabian

PY - 2018/4/16

Y1 - 2018/4/16

N2 - A semiclassical impact parameter version of the continuum distorted wave-Eikonal initial state theory is developed to study the differential ionization of Li atoms in collisions with Li2+ ions. Both post and prior forms of the transition amplitude are considered. The fully differential cross sections are calculated for the lithium targets in their ground and their first excited states and for the projectile ions at 16 MeV impact energy. The role of the inter-nuclear interaction as well as the significance of the post-prior discrepancy in the ejected electron spectra are investigated. The obtained results for ejection of the electron into the azimuthal plane are compared with the recent measurements and with their corresponding values obtained using a fully quantum mechanical version of the theory. In most of the cases, the consistency of the present approach with the experimental and the quantum theoretical data is reasonable. However, for 2p-state ionization, in the cases where no experimental data exist, there is a considerable difference between the two theoretical approaches. This difference is questionable and further experiments are needed to judge which theory makes a more accurate description of the collision dynamics.

AB - A semiclassical impact parameter version of the continuum distorted wave-Eikonal initial state theory is developed to study the differential ionization of Li atoms in collisions with Li2+ ions. Both post and prior forms of the transition amplitude are considered. The fully differential cross sections are calculated for the lithium targets in their ground and their first excited states and for the projectile ions at 16 MeV impact energy. The role of the inter-nuclear interaction as well as the significance of the post-prior discrepancy in the ejected electron spectra are investigated. The obtained results for ejection of the electron into the azimuthal plane are compared with the recent measurements and with their corresponding values obtained using a fully quantum mechanical version of the theory. In most of the cases, the consistency of the present approach with the experimental and the quantum theoretical data is reasonable. However, for 2p-state ionization, in the cases where no experimental data exist, there is a considerable difference between the two theoretical approaches. This difference is questionable and further experiments are needed to judge which theory makes a more accurate description of the collision dynamics.

KW - 3DW-EIS theory

KW - CDW-EIS approach

KW - binary peak

KW - fully differential cross sections

KW - ionization

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DO - 10.1088/1361-6455/aab879

M3 - 文章

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SN - 0953-4075

VL - 51

JO - Journal of Physics B: Atomic, Molecular and Optical Physics

JF - Journal of Physics B: Atomic, Molecular and Optical Physics

IS - 9

M1 - 095202

ER -

Fully differential cross sections for Li²⁺-impact ionization of Li(2s) and Li(2p)

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Keywords

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