Details

Autor(en) / Beteiligte

• Yoshida, Zensho
• Ogawa, Yuichi
• Morikawa, Junji
• Himura, Haruhiko
• Kondo, Shigeo
• Nakashima, Chihiro
• Kakuno, Shuichi
• Iqbal, Muhamad
• Volponi, Francesco
• Shibayama, Norihisa
• Tahara, Shigeru
• University of Tokyo, Research Center for High-Temperature Plasmas, Tokyo 113-8656

Titel

Toroidal magnetic confinement of non-neutral plasmas

Ist Teil von

• AIP conference proceedings, 1999, Vol.498 (1)

Ort / Verlag

United States

Erscheinungsjahr

1999

Beschreibungen/Notizen

• A new method of toroidal non-neutral plasma trap has been developed with applying the chaos-induced radial transport of particles near a magnetic null point. A pure electron plasma is produced by injecting an electron beam. The poloidal gyroradius of an electron at the energy of 1 keV is of order 10 mm, which determines the length scale of the chaotic region. Amongst various applications of toroidal non-neutral plasmas, a possibility of producing very high-{beta} plasma, which is suitable for advanced fusion, has been examined. The self-electric field of a non-neutral plasma can generate a strong shear flow. When the flow velocity is comparable to the Alfven speed (which is smaller than the ion sound speed, if {beta}>1), a high-{beta} equilibrium can be produced in which the plasma pressure is primarily balanced by the dynamic pressure of the flow. This configuration is described by a generalized Bernoulli law.