Computer Science
Scientific paper
Jul 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jqsrt..22..101p&link_type=abstract
Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 22, July 1979, p. 101-112.
Computer Science
2
Computer Programs, Hydrogen Plasma, Nonequilibrium Plasmas, Radiative Transfer, Computer Techniques, Jupiter Atmosphere, Plasma Slabs, Transport Properties
Scientific paper
A computer program called NEQRAP is described that calculates the radiative properties of nonequilibrium ionized hydrogen. From the given electron temperature, electron density, and atom density values (which do not necessarily satisfy the equilibrium relationship) and intensities of incident radiation, the non-Boltzmann populations of electronic states are computed by solving the equation of quasi-steady-state population distribution. Emission and absorption coefficients are determined as functions of wavelength by invoking the principle of detailed balance between the upper and lower states of each radiative transition. Radiative transport through the medium is computed assuming a one-dimensional uniform slab. The rate of ionic reaction is also computed. When used on a sample case, the program shows that there is a large difference between the calculated intensities of radiation emitted by a bulk of equilibrium and nonequilibrium hydrogen. The accuracy of the program is estimated to be better than 10%.
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