Abstract
The collisional radiative models used in the modeling of beam emission spectroscopy diagnostics neglect atom–atom collisions because of a lack of sufficiently detailed atomic data. Filling this scantiness we performed a classical trajectory Monte Carlo simulations to calculate the cross sections for various channels in collisions between H + H2 and Li + H2 for a wide range of projectile energies. Based on the calculated cross sections, a simplified version of the collisional radiative model has been derived. We show that the model is suitable to obtain the beam attenuation in neutral gases outside of the confined plasma region. A strong density dependence has been found for each beam species.
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Contribution to the Topical Issue “Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces (2018)”, edited by Károly Tökési, Béla Paripás, Gábor Pszota, and Andrey V. Solov’yov.
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Asztalos, O., Szondy, B., Tőkési, K. et al. The modeling of atom – neutral collisions for beam emission spectroscopy applications. Eur. Phys. J. D 73, 116 (2019). https://doi.org/10.1140/epjd/e2019-90690-2
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DOI: https://doi.org/10.1140/epjd/e2019-90690-2