Kakuyūgō kenkyū

Formation of Large Amplitude Electrostatic Shocks by Counterstreaming Plasmas

Tadao HONZAWA

1976 Volume 35 Issue 2 Pages 81-92
Published: 1976
Released on J-STAGE: March 04, 2011

DOIhttps://doi.org/10.1585/jspf1958.35.81

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Experimental results are reported showing that large amplitude, collisionless electrostatic shocks can be generated by counterstreaming plasmas characterized by Te/Ti-1. Energy analyses of ions and electrons at various places in the rest frame of shock were made by means of the sampling technique. These results have demonstrated that the two-ion beam interaction plays an important role in the shock formation and that electrons trapped by the shock potential have an effective temperature several times higher than their initial one.

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[title in Japanese]

[in Japanese], [in Japanese]

1976 Volume 35 Issue 2 Pages 93-106
Published: 1976
Released on J-STAGE: March 04, 2011

DOIhttps://doi.org/10.1585/jspf1958.35.93

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Plasma Plugging by a Cavity

H. Akiyama, S. Takeda, K. Minami

1976 Volume 35 Issue 2 Pages 107-116
Published: 1976
Released on J-STAGE: March 04, 2011

DOIhttps://doi.org/10.1585/jspf1958.35.107

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Nonlinear interactions between the high frequency electric field applied through a cavity and a plasma are experimentally studied. The increase of the density is observed in the upstream side of the plasma, whereas the decrease of the density and the increase of the electron temperature are observed in the downstream side. The relationship of the density depression with the electric field is the exponential type as expected for the electric field lower than a certain value. However, the density depression is linearly proportional to the electric field, when the amplitude of the high frequency wave is modulated.

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