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Proton impact charge exchange and excitation cross sections for liquid Sn divertor studies
Author(s) -
Janev Ratko K.,
Jakimovski Dragan
Publication year - 2020
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201900053
Subject(s) - atomic physics , excitation , divertor , physics , singlet state , resonance (particle physics) , range (aeronautics) , electron , proton , excited state , atom (system on chip) , plasma , tokamak , materials science , nuclear physics , quantum mechanics , computer science , embedded system , composite material
The quantum dynamics of charge exchange (electron capture) and excitation processes in proton collisions with Sn atoms is studied for the first time by using the two‐centre atomic orbital close coupling method. The expansion basis includes the lowest nine states of singlet and triplet symmetry of Sn and all the states with n ≤ 8 of the H atom. The spin‐resolved state‐selective charge exchange (up to n = 5) and excitation cross sections are calculated in the energy range of 0.5 − 100 keV . Strong coupling between the electron capture and excitation channels is observed in the low‐energy ( E ≤ 10 keV) region associated with the energy quasi‐resonance of some projectile and target states. The intensities of some strong Sn spectral lines are also calculated for a number of typical tokamak edge plasma temperatures.