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Volume 66 (1991)
- Issue 6 Pages 581-
- Issue 5 Pages 473-
- Issue 4 Pages 357-
- Issue 3 Pages 224-
- Issue 2 Pages 104-
- Issue 1 Pages 9-
Volume 66, Issue 3
Displaying 1-6 of 6 articles from this issue
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Recent ExperimentsMakoto Sakuai, Masahiro Kimura, Shunsuke Ohtani1991 Volume 66 Issue 3 Pages 224-252
Published: September 20, 1991
Released on J-STAGE: October 22, 2010
JOURNAL FREE ACCESSRecent experimental works with ion traps are surveyed. Ion traps can confine ions of very low-energy in a small space, and they are useful tools for the precise spectroscopy of ions. Basic ideas on trapping mechanism of several types of the traps and detection methods of trapped ions are summarized. Major topics are ultrahigh-resolution spectroscopy of ions using laser cooling methods and physics on one-component plasmas such as localization, phase transition and crystallization of ion cloud. Applications to elementary particle physics, nuclear physics and atomic physics on multiply charged ions are also presented.View full abstractDownload PDF (4683K) -
Katsunobu Nishihara1991 Volume 66 Issue 3 Pages 253-263
Published: September 20, 1991
Released on J-STAGE: October 22, 2010
JOURNAL FREE ACCESSPresented is a 3D particle code SCOPE which has been developed to simulate a large scale two component strongly coupled plasma. The code uses the 4th order in accuracy particle-particle particle-mesh method. As applications of the code the reduction in bremssthrahlung emission from a hot dense plasma and the nonlinear AC electric conductivity of a solid density plasma are shown.View full abstractDownload PDF (919K) -
[in Japanese]1991 Volume 66 Issue 3 Pages 264-266
Published: September 20, 1991
Released on J-STAGE: October 22, 2010
JOURNAL FREE ACCESSDownload PDF (288K) -
Yukitoshi Miura, Teruaki Shoji, Masahiro Mori, Norio Suzuki, Hiroaki O ...1991 Volume 66 Issue 3 Pages 267-276
Published: September 20, 1991
Released on J-STAGE: October 22, 2010
JOURNAL FREE ACCESSH-mode has little controllability from the point of view of a steady state operation. By applying a high-m ergodic magnetic field, the suppression in density and radiation increase is observed with Hα bursts. And a steady state H-mode can be realized in JFT-2M. The total stored energy of the steady state H-mode shows some loss compared with that of the burst free H-mode. But it is only less than about 10% due to the suppression of density increase. The profiles of the core plasma density and temperature are almost the same with and without the ergodic field. The controlled region of the steady state H-mode can be seen as a belt above L/H threshold in neutral beam power versus ergodic field graph. That region increases with increasing the ergodic field. This demonstrates an active controllability of the H-mode.View full abstractDownload PDF (877K) -
Yasunori Yamamura, Takeshi Takiguchi, Zhijie Li1991 Volume 66 Issue 3 Pages 277-290
Published: September 20, 1991
Released on J-STAGE: October 22, 2010
JOURNAL FREE ACCESSThe bombarding angle dependence and the angular distributions of the light-ion sputtering have been investigated by the computer simulation and the direct-knock-out model, where the Ni target is bombarded by 450eV and lkeV H. As a computer simulation code we adopted the ACAT code. The main feature of the light-ion sputtering at oblique incidence is found to be described by the direct-knock-out process. The interatomic potential is an important factor for the bombarding-angle dependence of the light-ion sputtering. In the case of lkeV H+ the ACAT results of the bombarding-angle dependence and the angular distribution are in good agreements with experiments. The experimental angular distributions of 450eV H+→Ni at oblique incidence (>80°) cannot be explained by both the ACAT simulation and the directknock-out model, and seems to be much influenced by the surface roughness.View full abstractDownload PDF (1140K) -
Hideki Nakashima, Hidetoshi Shoyama, Yukinori Kanda1991 Volume 66 Issue 3 Pages 291-319
Published: September 20, 1991
Released on J-STAGE: October 22, 2010
JOURNAL FREE ACCESSA design study was made on a rocket powered by laser fusion. Dependence of its flight performance on target gain, driver repetition rate and fuel composition was analyzed to obtain optimal design parameters of the laser fusion rocket. The results indicate that the laser fusion rocket fueled with DT or D3He has the potential advantages over other propulsion systems such as fission rocket for interplanetary travel.View full abstractDownload PDF (1921K)
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