Ab Initio Double-Differential Ionization Cross-Section Calculations in Antiproton–Helium Collisions

Barna, Imre Ferenc; Pocsai, Mihály András; Tőkési, Károly

doi:10.3390/atoms11040074

Open AccessArticle

Ab Initio Double-Differential Ionization Cross-Section Calculations in Antiproton–Helium Collisions

by

Imre Ferenc Barna

^1,*

,

Mihály András Pocsai

¹

and

Károly Tőkési

²

¹

Wigner Research Centre for Physics, Konkoly-Thege Miklós út 29-33, H-1121 Budapest, Hungary

²

Institute for Nuclear Research (ATOMKI), H-4026 Debrecen, Hungary

^*

Author to whom correspondence should be addressed.

Atoms 2023, 11(4), 74; https://doi.org/10.3390/atoms11040074

Submission received: 3 March 2023 / Revised: 13 April 2023 / Accepted: 16 April 2023 / Published: 20 April 2023

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Abstract

We present ionization cross-sections for antiproton and helium collisions based on an ab initio time-dependent coupled channel method. In our calculations, a finite basis set of regular helium Coulomb wave packets and Slater function were used. The semiclassical approximation was applied with the time-dependent Coulomb potential to describe the antiproton–electron interaction. Three different projectile energies were considered as 10, 50 and 100 keV. We found clear evidence for the formation of the anti-cusp in the differential distributions.

Keywords: ab initio time-dependent coupled channel method; ionization; antiproton; anti-cusp

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MDPI and ACS Style

Barna, I.F.; Pocsai, M.A.; Tőkési, K. Ab Initio Double-Differential Ionization Cross-Section Calculations in Antiproton–Helium Collisions. Atoms 2023, 11, 74. https://doi.org/10.3390/atoms11040074

AMA Style

Barna IF, Pocsai MA, Tőkési K. Ab Initio Double-Differential Ionization Cross-Section Calculations in Antiproton–Helium Collisions. Atoms. 2023; 11(4):74. https://doi.org/10.3390/atoms11040074

Chicago/Turabian Style

Barna, Imre Ferenc, Mihály András Pocsai, and Károly Tőkési. 2023. "Ab Initio Double-Differential Ionization Cross-Section Calculations in Antiproton–Helium Collisions" Atoms 11, no. 4: 74. https://doi.org/10.3390/atoms11040074

APA Style

Barna, I. F., Pocsai, M. A., & Tőkési, K. (2023). Ab Initio Double-Differential Ionization Cross-Section Calculations in Antiproton–Helium Collisions. Atoms, 11(4), 74. https://doi.org/10.3390/atoms11040074

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Ab Initio Double-Differential Ionization Cross-Section Calculations in Antiproton–Helium Collisions

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