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Volume 65 (1991)
- Issue 6 Pages 601-
- Issue 5 Pages 489-
- Issue 4 Pages 399-
- Issue 3 Pages 289-
- Issue 2 Pages 115-
- Issue 1 Pages 5-
Volume 65, Issue 6
Displaying 1-5 of 5 articles from this issue
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Yoichi Hirano, Kiyoshi Ogawa1991 Volume 65 Issue 6 Pages 601-635
Published: June 20, 1991
Released on J-STAGE: October 22, 2010
JOURNAL FREE ACCESSRecent results of the Reversed Field Pinch (RFP) research are reviewed. Characteristics and present problematic issues of RFP are summarized and a short introduction to the theoretical bases of RFP is presented. Recent experimental status of RFP is summarized, such as long ischarge duration (>80ms), high electron temperature (-1ke V), anomalous ion heating, scaling laws, etc. Several topics are described in some detail, such as the loop voltage anomaly, equilibrium control and error field, mechanism of MHD dynamo-action and kinetic dynamo theory (high energy electron flow).View full abstractDownload PDF (3674K) -
Yasuo Shimomura1991 Volume 65 Issue 6 Pages 636-638
Published: June 20, 1991
Released on J-STAGE: October 22, 2010
JOURNAL FREE ACCESSEngineering Design Activity (EDA) will be organized in a near future and will perform the necessary R & D and engineering design for six years.View full abstractDownload PDF (228K) -
Hitoshi Hojo1991 Volume 65 Issue 6 Pages 639-657
Published: June 20, 1991
Released on J-STAGE: October 22, 2010
JOURNAL FREE ACCESSLow-frequency stability of mirror confined plasmas is reviewed. Interchange, E×B rotation-driven and E×B drift shear-driven (Kelvin-Helmholtz) modes are studied based on the Rosenbluth-Simon equation. The flute stability of these modes in mirror confined plasmas is analyzed by use of Newcomb's FLR Lagrangian. E×B rotation-driven drift waves, several stabilization schemes for axisymmetric mirror plasmas including wall stabilization and RF stabilization, and rotational stability of theta-pinch plasmas are also briefly discussed.View full abstractDownload PDF (1369K) -
Kunihiko Watanabe1991 Volume 65 Issue 6 Pages 658-671
Published: June 20, 1991
Released on J-STAGE: October 22, 2010
JOURNAL FREE ACCESSThe MHD simulation study of space plasma phenomena, especially the global simulation of the solar wind-magnetosphere-ionosphere interaction, is described. In the first place we show the formation process of the magnetosphere, where the interaction of the solar wind with the geomagnetic field makes traces of the bow shock, the magnetosheath, the magnetopause, the polar cusp, the boundary layer and the plasma sheet. The magnetospehre is not stationary, but sometimes suffers from magnetic reconnection in the plasma sheet forming a large lump of plasma surrounded by reconnected field lines, a plasmoid. The southward interplanetary magnetic field (IMF) drastically enhances the reconnection rate in the plasma sheet, while no reconnection takes place when the solar wind carries the northward IMF. Secondly, we show that auroral arcs are spontaneously excited as a result of global feedback interaction between the magnetosphere and the ionosphere.View full abstractDownload PDF (5080K) -
Kaoru Ohya, Kenji Nishimura, Ichiro Mori1991 Volume 65 Issue 6 Pages 672-679
Published: June 20, 1991
Released on J-STAGE: October 22, 2010
JOURNAL FREE ACCESSStatistics of secondary electron emission from graphite bombarded by low-energy (<500e V) electrons are investigated by using a Monte Carlo simulation. Special features of the emission statistics are a large probability for no secondary electron and a wide spread of the probabilities to more electrons. The statistics spread largely wider with increasing incident electron energy at oblique incidence. In addition, angular and energy distributions not only of secondary electrons emitted but also of the incident electrons backscattered from the surface are calculated; the high-energy components in the energy distributions increase with oblique incidence, the angular distribution of the secondary electrons obeys the cosine law and that of the backscattered electron inclines with oblique incidence.View full abstractDownload PDF (834K)
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