COUPLING OF RADIATION TRANSFER, LEVEL AND ELECTRON KINETICS UNDER HIGH-SPEED SHOCK WAVE CONDITIONS IN AN H2/HE MIXTURE

Abstract

A collisional-radiative model (CRM) of a plasma composedof H2, H+2 , H, H+, He, He+, e?, is appliedto study the relaxation processes behind an hypersonicshock wave under conditions reproducing an atmosphericentry in Jupiter's atmosphere. The CRM is coupled witha Boltzmann equation solver, for the determination of theelectron energy distribution function, and with a radiativetransfer equation for calculating the specific intensityIn , radiative rate coefficients and radiative energy transferin one-dimensional slab geometry. The model predictshighly non-equilibrium electron and atomic distributionsas well as strong reabsorption of atomic radiationin the post-shock region. A comparison among distributionsobtained using optically thick and optically thinplasma approximation against the fully coupled calculationis also presented.


Tutti gli autori

  • G. D'Ammando; L. D. Pietanza; G. Colonna; M. Capitelli

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Anno di pubblicazione

2012

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