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Volume 13 (1964)
- Issue 6 Pages 541-
- Issue 5 Pages 473-
- Issue 4 Pages 361-
- Issue 3 Pages 312-
- Issue 2 Pages 120-
- Issue 1 Pages 1-
Volume 13, Issue 3
Displaying 1-3 of 3 articles from this issue
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Sadao Nakai, Chiyoe Yamanaka1964 Volume 13 Issue 3 Pages 312-323
Published: 1964
Released on J-STAGE: March 04, 2011
JOURNAL FREE ACCESSFor the origin of the precursor electron in the E-M shock tube, various hypotheses were proposed by many authors. But up to now there is no definite conclusion of its origin nor the informations of its density. Now we report the axial distribution of the precursor electron in a T-shaped shock tube which has been measured by using the automatic measuring apparatus of the microwave reflection coefficient.View full abstractDownload PDF (1393K) -
SIGERU MORI, NOBUKI KAWASHIMA, KENJI INOUE, MASATOSHI TANAKA1964 Volume 13 Issue 3 Pages 324-328
Published: 1964
Released on J-STAGE: March 04, 2011
JOURNAL FREE ACCESSLine broadenings of He I 4471 and He II 4686 in the plasma generated in a Marshall type coaxial plasma gun are measured by a 340cm Ebert type spectrometer. According to the Doppler shift measurement, a plasma is accelerated for about 5μ sec after the initiation ofthe gun discharge, and it leaves the plasma gun, while an unaccelerated plasma remains in the plasma gun after then during the discharge. Most of the line broadening in He II 4686 is due to Doppler broadening, and the Stark broadening is negligible. The accelerated plasma from the gun gradually loses the perpendicular component of the velocity to the axis of the plasma gun as it travels.View full abstractDownload PDF (740K) -
Noboru Shimomura, Shigetoshi Tanaka, Kenji Mitani1964 Volume 13 Issue 3 Pages 336-349
Published: 1964
Released on J-STAGE: March 04, 2011
JOURNAL FREE ACCESSThe dispersion laws for the waves propagating in a magnetoactive plasma are obtained, using the Boltzmann equation with a collision term representative of isotropic, recoilless, elstic, binary scattering of the electrons. In the work, the two cases (I) M; k||Bo and (II); k1Bo are studied, where k and Bo are the wave vector and the uniform external magnetic field.
Assuming a δ-function for the velocity distribution function the dispersion laws for a long wavelength limit are clasified as follows :
A……ω (ω+iv) 2=ωp2 (ω+iv-iV/3·dv/dV) B……ω (ω±ωc+iv) 2=ωp2 (ω±ωc+iv-iV/3·dv/dV) where ωc, ωp and v are the cyclotron, the plasma, the collision frequency respectively. After some calculations under the assumption v (V) =const×Vh, it is found that the initial disturbance grows for h>3 and Im (ω) attains its maximum value at Re (ω) =ωc.View full abstractDownload PDF (825K)
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