Radiative association and charge transfer phenomena observed in the argonium gas
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Date
2023
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Abstract
The work presente dinthisthesis is devoted to the examination of the radiative processes of interstell arargonium ArH+, namely,association, Ar+H+ → ArH+, and charge transfer, Ar+ + H → Ar+H+. To perform both of the setasks,the corresponding potential-energy
curves and dipole moments are determined in order to construct the ground and the two first excited ArH+ molecular states . Once all the required curvesarewellestablishedandtheir hysicalfeaturesandspectroscopicvaluesarecontrasted withpreviouslypublisheddata,thecrosssections,forbothradiativeprocesses,theformationofthemolecularion ArH+ byassociationandchargetransferarecomputedquantum-mechanicallyatlowerandhigher energies.Finally,thetemperature-dependentratecoefficientsarecalculatedandanalyzedin
thetemperaturerange 1 − 10000K .