Browsing by Author "Talhi, Fatima"

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    Radiative association and charge transfer phenomena observed in the argonium gas
    (2023) Talhi, Fatima
    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 .