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Doubly differential cross sections for ionization in He2++He collisions

Sh. U. Alladustov1,*, K. H. Spicer2, N. W. Antonio2, A. M. Kotian2, and A. S. Kadyrov2,3

  • *Contact author: sh.alladustov@gmail.com
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Phys. Rev. A 112, 012804 – Published 8 July, 2025

DOI: https://doi.org/10.1103/g9bl-vzqv

Abstract

We study the He2+3+He differential ionization problem using the two-electron wave-packet convergent close-coupling (WP-CCC) method. We present the results for doubly differential cross sections for ionization in terms of the angle and energy of the emitted electrons at intermediate collision energies. In this energy region, coupling between all reaction channels and electron-electron correlation effects are of considerable importance. These are fully accounted for in the WP-CCC approach. Overall, our results are in good agreement with the available experimental data and other theoretical calculations. We also discuss the saddle-point ionization mechanism for this collision system. It is concluded that this mechanism is not justified in the intermediate-energy region.

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References (40)

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Phys. Rev. A 112, 012804– Published 8 July, 2025
  • Received 24 February 2025
  • Accepted 12 June 2025
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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