Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Hisao Ashida"'
Low-aspect-ratio reversed field pinch plasma equilibria with finite surface toroidal current density
Publikováno v:
Plasma Physics and Controlled Fusion. 47:1287-1303
Low-aspect-ratio reversed field pinch (RFP) plasmas are expected to produce equilibria in which the resonant surfaces for tearing modes are well separated compared with high-aspect-ratio RFP plasmas. The profile of the safety factor, q, determines th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e0acd8a97f4cdf39543fcad468ab690d
https://doi.org/10.1088/0741-3335/47/8/010
https://doi.org/10.1088/0741-3335/47/8/010
Publikováno v:
Journal of the Physical Society of Japan. 74:930-940
Numerical simulations using magnetohydrodynamic (MHD) equations are performed for the pulsed poloidal current drive (PPCD) in reversed field pinch (RFP) plasmas. The PPCD is simulated by reducing the toroidal magnetic field at the wall, B z ( a ), in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87ecebc49a99a609e8c15e92ffef0db4
https://doi.org/10.1143/jpsj.74.930
https://doi.org/10.1143/jpsj.74.930
Autor:
Masayoshi Taguchi, Haruhisa Koguchi, Yoichi Hirano, Shoichi Shiina, Hisao Ashida, Yukio Osanai, Yasuyuki Yagi, Masamitsu Aizawa, Katsunori Saito, Masayuki Watanabe, Hajime Sakakita, Yasuo Nagamine, Hisaya Sugimoto
Publikováno v:
Journal of Plasma and Fusion Research. 81:932-943
According to a simplified costing algorithm for a steady-state fusion reactor power plant, the relative attractiveness of advanced physics modes mainly depends on the stability and noninductive current drive of the equilibrium. The high-stability bet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5074292ef7c6db699820245168baf909
https://doi.org/10.1585/jspf.81.932
https://doi.org/10.1585/jspf.81.932
Publikováno v:
Journal of the Physical Society of Japan. 69:1676-1687
Poloidal and toroidal rotations of the reversed field pinch plasmas induced by the magnetohydrodynamic resistive tearing modes are numerically studied by using the ohm's law with the ion inertia term. The modes with the poloidal mode number m =1, whi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9780e4aadb15e2e2f14f7663c445ba62
https://doi.org/10.1143/jpsj.69.1676
https://doi.org/10.1143/jpsj.69.1676
Publikováno v:
Plasma Physics and Controlled Fusion. 38:229-242
An averaged transverse velocity of stochastic magnetic field lines between two tearing modes is presented by using the renormalized weak turbulence theory. The averaged velocity gives the friction coefficient of moving magnetic field lines which is e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b0b777efd570970d91d535fc9290d19
https://doi.org/10.1088/0741-3335/38/2/008
https://doi.org/10.1088/0741-3335/38/2/008
Publikováno v:
Journal of the Physical Society of Japan. 64:3291-3299
The instability of the axisymmetric spherical force free plasma with the parallel plasma flow to the magnetic filed is studied by using the MHD equations under the condition of incompressibility. The linear growth rate of the unstable mode with the f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7c57f79ab8dbd64c9354f5e12e43186
https://doi.org/10.1143/jpsj.64.3291
https://doi.org/10.1143/jpsj.64.3291
Publikováno v:
Physics of Plasmas. 2:1182-1191
A field‐reversal mechanism in a reversed‐field pinch (RFP) is studied through a three‐dimensional resistive compressible magnetohydrodynamic (MHD) simulation of the single‐ and multiple‐helicity modes. As the magnetic Reynolds number increa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eec77c6db8be9b3a2017172e6fe98bc2
https://doi.org/10.1063/1.871396
https://doi.org/10.1063/1.871396
Publikováno v:
Physics of Fluids B: Plasma Physics. 5:1263-1269
The dynamo structure in the reversed‐field pinch (RFP) is studied through the nonlinear dynamics of a single‐helicity mode. Simulation is concentrated upon the physical structure of nonlinear interactions of the plasma flow and magnetic fluctuati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06ac26d232241540a4edcc6d4df3019c
https://doi.org/10.1063/1.860916
https://doi.org/10.1063/1.860916
Publikováno v:
Journal of Plasma and Fusion Research. 80:721-722
A new RFP device with a very small aspect ratio (A = 2.1) is designed and constructed. The aspect ratio of A = 2.1 is much smaller than those of existing devices (A > 3). At this small A, no rational magnetic surface appears from the axis to ψ = 0.4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d83ce389fbc8c4d48cf66e2fcca3fc3
https://doi.org/10.1585/jspf.80.721
https://doi.org/10.1585/jspf.80.721
Autor:
Masayuki Watanabe, K. Saito, Shoichi Shiina, Masamitsu Aizawa, Yasuo Nagamine, H. Koguchi, H. Sakakita, Hisao Ashida, Y. Hirano, Yukio Osanai, Yasuyuki Yagi, M. Taguchi, Hisaya Sugimoto
Publikováno v:
Physics of Plasmas. 12:080702
The neoclassical magnetohydrodynamic equilibrium of reversed-field pinch (RFP) is self-consistently solved considering the self-induced plasma current IϕSI in a reactor relevant parameter regime. The current IϕSI consists of bootstrap currents due
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5912001e6496097c85b386239e010117
https://doi.org/10.1063/1.2001407
https://doi.org/10.1063/1.2001407