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Atoms, Volume 12, Issue 5

May 2024 - 3 articles

Cover Story: The classical trajectory Monte Carlo (CTMC) method was used to determine the total (TCS) and differential (DCS) cross sections for ionization and charge exchange processes in collisions between proton and neutral noble gas atoms (Ne, Ar, Kr, and Xe). The CTMC method is a non-perturbative method, based on the calculation of a large number of individual particle trajectories when the initial atomic states are chosen randomly. In the present work, CTMC simulations were carried using three-body approximation, where the target atoms were described in the single active electron approximation using a Garvey model potential. TCSs were evaluated for energies between 0.2 keV and 50 MeV, while DCS were analysed at 35 keV. Our results show good agreement with the previous theoretical and experimental data. View this paper

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Article

2 Citations

1,852 Views

15 Pages

PyQCAMS: Python Quasi-Classical Atom–Molecule Scattering

Rian Koots and
Jesús Pérez-Ríos

Atoms2024, 12(5), 29;https://doi.org/10.3390/atoms12050029

11 May 2024

We present Python Quasi-classical atom–molecule scattering (PyQCAMS v0.1.0), a new Python package for atom–diatom scattering within the quasi-classical trajectory approach. The input consists of the mass, collision energy, impact paramete...

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Article

2 Citations

1,785 Views

17 Pages

Interaction of Protons with Noble-Gas Atoms: Total and Differential Cross Sections

Musab Al-Ajaleen and
Károly Tőkési

Atoms2024, 12(5), 28;https://doi.org/10.3390/atoms12050028

7 May 2024

We present a classical treatment of the ionization and electron-capture processes in the interaction of protons with neutral noble-gas atoms, namely, Ne, Ar, Kr, and Xe. We used a three-body classical-trajectory Monte Carlo (CTMC) method to calculate...

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1,842 Views

8 Pages

External Radiation Assistance of Neutrinoless Double Electron Capture

Vladimir N. Kondratyev and
Feodor F. Karpeshin

Atoms2024, 12(5), 27;https://doi.org/10.3390/atoms12050027

28 April 2024

The influence of electromagnetic radiation on nuclear processes is applied to an example of a neutrinoless double electron capture (0ν2ec). For cases with X-ray free-electron lasers (X-ray FELs) and/or inverse Compton X-ray sources, it was shown t...

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