FusionPapers
図版検索トレンドwiki日本の研究
© 2026 FUSIONPAPERS
About法務情報
トップに戻る

Characteristics of Ultra-Low q Plasmas in the OHTE Device

P.L. Taylor, R.J. La Haye, M.J. Schaffer, T. Tamano, N. Inoue, Z. Yoshida, Y. Kamada1989年被引用 12Nuclear FusionIF 3出版社

The characteristics of plasmas with the safety factor q between that of tokamaks and that of reversed field pinches were studied on the OHTE device, with toroidal fields of up to 3.9 kG and plasma currents of up to 140 kA. Plasmas in this regime (0 < q < 1) are called ultra-low q plasmas. The discharges are globally stable and last much longer than the resistive decay time of the current. A unique feature of most discharges is a series of plateaus in the current (or equivalently q) as the current decreases in a 'staircase' fashion. The plateau q is related to the major rational ratios (1/4, 1/3, 1/2, 1, etc.), suggesting plasma self-organization. Profile measurements show that the q-profile is somewhat different from those of the Taylor relaxed states. The soft X-ray temperature measurement indicates that the plasma has burned through the radiation barrier.

日本語訳

OHTE装置において、トカマクと逆磁場ピンチの間の安全係数qを持つプラズマの特性を、最大3.9kGのトロイダル磁場と最大140kAのプラズマ電流で研究した。この領域(0 < q < 1)のプラズマは超低qプラズマと呼ばれる。放電は全体的に安定であり、電流の抵抗減衰時間よりもはるかに長く持続する。ほとんどの放電の特徴的な特性は、電流(または同等にq)が減少する際に「階段状」の様式で現れる一連のプラトーである。プラトーのqは主要な有理比(1/4、1/3、1/2、1など)に関連しており、プラズマの自己組織化を示唆している。分布測定により、q分布はテイラー緩和状態のものとはやや異なることが示された。軟X線温度測定は、プラズマが放射障壁を突き抜けたことを示している。

この論文にはまだAI要約がありません。

関連論文

Plasma shrinkage due to free boundary kink mode in a tokamak

1987Nuclear Fusion

Sustainment of low-q tokamak, ultra-low-q and reversed field pinch discharges in HBTX-1C with a resistive shell

1990Nuclear Fusion

Toroidal modelling of RMP response in ASDEX Upgrade: coil phase scan, q95 dependence, and toroidal torques

2016Nuclear Fusion

Resistive versus ideal plasma response to RMP fields in DIII-D: roles of q95 and X-point geometry

2019Nuclear Fusion

Novel test-bed facility for PSI issues in fusion reactor conditions on the base of next generation QSPA plasma accelerator

2017Nuclear Fusion

Scalings and plasma profile parameterization of ASDEX high density Ohmic discharges

1991Nuclear Fusion

Equilibrium and stability investigations in the belt pinch

1975Nuclear Fusion

Ideal MHD stability limits of low aspect ratio tokamak plasmas

1997Nuclear Fusion

Plasma initiation and preliminary magnetic control in the HL-2M tokamak

2021Nuclear Fusion

High performance reversed shear plasmas with a large radius transport barrier in JT-60U

1998Nuclear Fusion