caa a22 4500 475850823 CHVBK 20180406123927.0 cr unu---uuuuu 170329e20000901xx s 000 0 eng 10.1007/BF02681582 doi (NATIONALLICENCE)springer-10.1007/BF02681582 Katsnel'son S. Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia aut Calculation of the integral optical characteristics of a sodium plasma [Elektronische Daten] [S. Katsnel'son] The emissivities of a plane layer and a hemispherical volume and also the Planck and Rosseland mean values of a sodium plasma are calculated in the range of temperatures 1000-20,000 K and pressures 0.1-20 bar. In determination of the spectral coefficient of absorption the entire spectral interval in which the main part of radiant energy is transferred is taken into account, and also the most important radiation processes that are associated with free-free, bound-free, and bound-bound transitions are considered. For the first time, the effect of internal microfields in the plasma is taken into account, thus allowing a correct calculation of the populations of excited states, shift of ionization equilibrium, and a smooth transition of the line spectrum into a continuous one in the near-threshold regions. Kluwer Academic/Plenum Publishers, 2000 Journal of Engineering Physics and Thermophysics Springer US 73/5(2000-09-01), 927-934 1062-0125 73:5<927 2000 73 10891 https://doi.org/10.1007/BF02681582 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02681582 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Katsnel'son S. Institute of Theoretical and Applied Mechanics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia aut NATIONALLICENCE 773 0- Journal of Engineering Physics and Thermophysics Springer US 73/5(2000-09-01), 927-934 1062-0125 73:5<927 2000 73 10891 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer