Spectroscopic Studies on Relaxation Process of Excited Levels in Shock Heated Plasma
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概要
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The time developments of emission spectra and electron density of the plasma generated by an electromagnetically driven shock wave were observed. Helium mixed with a small amount (0.01 to 3%) of H2, Ar, Kr or CO was used as the test gas. From a comparison of the experimental results with the calculation based on collisional-radiative model it has been concluded that an excited level of atoms or ions goes through the following states of excitation with the progress of ionization relaxation: (I) coronal state, (II) partial stepwise excitation state, (III) complete stepwise excitation state and (IV) partial LTE. The critical electron densities corresponding to the transitions from state II to III and that from III to IV were determined experimentally. The influence of radiation from driving discharge plasma on the relaxation process was also made clear in experiment.
- 社団法人日本物理学会の論文
- 1975-02-15
著者
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Okasaka Rei
Department Of Mechanical Engineering Ii Faculty Of Engineering Kyoto University
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Okasaka Rei
Department Of Engineering Physics Faculty Of Engineering Kyoto University
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