摘要:

AbstractThe populations of excited hydrogen and helium atoms in non‐L.T.E. plasmas have been calculated for two different physical situations, namely (i) no external radiation field present, and (ii) strong superposed radiation originating from a CO2, Ruby or Argon Ion Laser. The radiation field intervenes in the collisional‐radiative model via two new terms: Photoionization and stimulated recombination induced by the Laser radiation field. The solutions of the rate equations yield a lowering of the populations when a plasma is irradiated by a Laser beam. The lowering is different for cold recombining and hot diffusion‐dominated plasmas. At high radiation densities a saturation effect occurs, since the photoionization rate becomes equal to the rate of stimulated recombination. Measurements of the populations of excited H and He atoms in a glow discharge irradiated by a CO2Laser beam of power density 105W/cm2are in broad agreement with the theoretical predic

ISSN:0005-8025    

DOI:10.1002/ctpp.19740140402

出版商:WILEY‐VCH Verlag    

年代:1974

数据来源: WILEY

摘要:

AbstractIn analogy with the phenomenon called acoustic streaming in ordinary fluid mechanics, we study here some non‐linear effects generated by progressing waves in a multicomponent plasma. Specifically we calculate the D. C. – streaming motion, electric field and density generated by the waves. In the last section we consider briefly the generation of second order effects in a rectangular wave‐

ISSN:0005-8025    

DOI:10.1002/ctpp.19740140403

出版商:WILEY‐VCH Verlag    

年代:1974

数据来源: WILEY

摘要:

AbstractAuf der Grundlage einfacher Bilanzgleichungen werden stationäre, eindimensionale Modelle katodischer Brennflecke von Cu‐Vakuumbögen berechnet. Durch Variation von Koeffizienten und Gleichungen des Modells können Aussagen über die wechselseitige Abhängigkeit der Brennfleck‐parameter und über die Existenzgrenzen des Brennflecks gewonn

ISSN:0005-8025    

DOI:10.1002/ctpp.19740140404

出版商:WILEY‐VCH Verlag    

年代:1974

数据来源: WILEY

ISSN:0005-8025    

DOI:10.1002/ctpp.19740140401

出版商:WILEY‐VCH Verlag    

年代:1974

数据来源: WILEY