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Open AccessArticle

Doubly and Triply Differential Cross Sections for Single Ionization of He by Fast Au53+ Using a Multi-Body Quasiclassical Model

Centre Interdisciplinaire de Recherche sur les Ions, la Matière et la Photonique, Université de Caen-Normandie, 6 bd du Maréchal Juin, 14050 Caen CEDEX, France
Atoms 2020, 8(2), 19; https://doi.org/10.3390/atoms8020019
Received: 17 February 2020 / Revised: 30 April 2020 / Accepted: 2 May 2020 / Published: 6 May 2020
A multi-body multi-center quasiclassical model was used to determine doubly- and triply-differential cross sections following single ionization in 3.6 MeV/amu Au53+ + He collisions. The present model improved recent calculations, in which free electrons were added in the collision to reproduce, at least qualitatively, the experimental binary peak. In the present calculations, the electrons, that were assumed to originate from the collisions of Au53+ with surfaces before colliding with the He target, were now considered to be in the field of the projectile, with nearly the same velocity. The agreement between the calculations and the experiment was improved, for both the doubly- and the triply-differential cross sections and was better than previous calculations based on quantum mechanics. View Full-Text
Keywords: ion-atom collisions; ionization; classical trajectory Monte Carlo (CTMC) calculations; fully differential cross sections ion-atom collisions; ionization; classical trajectory Monte Carlo (CTMC) calculations; fully differential cross sections
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Frémont, F. Doubly and Triply Differential Cross Sections for Single Ionization of He by Fast Au53+ Using a Multi-Body Quasiclassical Model. Atoms 2020, 8, 19.

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