Single- and two-centre effects in fully differential cross sections for single ionization of H2 molecules by 75 keV protons

M. F. Ciappina; C. A. Tachino; R. D. Rivarola; S. Sharma; M. Schulz

doi:10.1088/0953-4075/48/11/115204

Single- and two-centre effects in fully differential cross sections for single ionization of H₂ molecules by 75 keV protons

M. F. Ciappina, C. A. Tachino, R. D. Rivarola, S. Sharma, M. Schulz

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10 Scopus citations

Abstract

We present theoretical calculations of single ionization of H₂ molecules by 75 keV proton impact. The computed fully differential cross sections for different electron ejection geometries and projectile kinematical conditions are compared with recent measurements made by Hasan et al (2014 J. Phys. B: At. Mol. Opt. Phys. 47 215201). We employ a molecular version of the continuum distorted wave-eikonal initial state model, where all the interactions present in the exit channel are considered on an equal footing. In addition, our approach allows us to incorporate different interference terms and to assess their influence. Overall, the agreement between experiment and theory is better than for the case of more sophisticated schemes for coplanar geometries.

Original language	English
Article number	115204
Journal	Journal of Physics B: Atomic, Molecular and Optical Physics
Volume	48
Issue number	11
DOIs	https://doi.org/10.1088/0953-4075/48/11/115204
State	Published - 14 Jun 2015
Externally published	Yes

Keywords

Atomic collisions
Distorted wave models
Interference effects

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10.1088/0953-4075/48/11/115204

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title = "Single- and two-centre effects in fully differential cross sections for single ionization of H2 molecules by 75 keV protons",

abstract = "We present theoretical calculations of single ionization of H2 molecules by 75 keV proton impact. The computed fully differential cross sections for different electron ejection geometries and projectile kinematical conditions are compared with recent measurements made by Hasan et al (2014 J. Phys. B: At. Mol. Opt. Phys. 47 215201). We employ a molecular version of the continuum distorted wave-eikonal initial state model, where all the interactions present in the exit channel are considered on an equal footing. In addition, our approach allows us to incorporate different interference terms and to assess their influence. Overall, the agreement between experiment and theory is better than for the case of more sophisticated schemes for coplanar geometries.",

keywords = "Atomic collisions, Distorted wave models, Interference effects",

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T1 - Single- and two-centre effects in fully differential cross sections for single ionization of H2 molecules by 75 keV protons

AU - Ciappina, M. F.

AU - Tachino, C. A.

AU - Rivarola, R. D.

AU - Sharma, S.

AU - Schulz, M.

PY - 2015/6/14

Y1 - 2015/6/14

N2 - We present theoretical calculations of single ionization of H2 molecules by 75 keV proton impact. The computed fully differential cross sections for different electron ejection geometries and projectile kinematical conditions are compared with recent measurements made by Hasan et al (2014 J. Phys. B: At. Mol. Opt. Phys. 47 215201). We employ a molecular version of the continuum distorted wave-eikonal initial state model, where all the interactions present in the exit channel are considered on an equal footing. In addition, our approach allows us to incorporate different interference terms and to assess their influence. Overall, the agreement between experiment and theory is better than for the case of more sophisticated schemes for coplanar geometries.

AB - We present theoretical calculations of single ionization of H2 molecules by 75 keV proton impact. The computed fully differential cross sections for different electron ejection geometries and projectile kinematical conditions are compared with recent measurements made by Hasan et al (2014 J. Phys. B: At. Mol. Opt. Phys. 47 215201). We employ a molecular version of the continuum distorted wave-eikonal initial state model, where all the interactions present in the exit channel are considered on an equal footing. In addition, our approach allows us to incorporate different interference terms and to assess their influence. Overall, the agreement between experiment and theory is better than for the case of more sophisticated schemes for coplanar geometries.

KW - Atomic collisions

KW - Distorted wave models

KW - Interference effects

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DO - 10.1088/0953-4075/48/11/115204

M3 - 文章

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SN - 0953-4075

VL - 48

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

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M1 - 115204

ER -

Single- and two-centre effects in fully differential cross sections for single ionization of H₂ molecules by 75 keV protons

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