Isotope effects on energy, particle transport and turbulence in electron cyclotron resonant heating plasma of the Large Helical Device

被引：17

作者：

Tanaka, K. ^{[1
,2
]}

Ohtani, Y. ^{[3
]}

Nakata, M. ^{[1
,4
]}

Warmer, F. ^{[5
]}

Tsujimura, T. ^{[1
]}

Takemura, Y. ^{[1
,4
]}

Kinoshita, T. ^{[2
]}

Takahashi, H. ^{[1
,4
]}

Yokoyama, M. ^{[1
,4
]}

Seki, R. ^{[1
,4
]}

Igami, H. ^{[1
]}

Yoshimura, Y. ^{[1
]}

Kubo, S. ^{[1
]}

Shimozuma, T. ^{[1
]}

Tokuzawa, T. ^{[1
,4
]}

Akiyama, T. ^{[6
]}

Yamada, I ^{[1
]}

Yasuhara, R. ^{[1
,4
]}

Funaba, H. ^{[1
]}

Yoshinuma, M. ^{[1
]}

Ida, K. ^{[1
]}

Goto, M. ^{[1
,4
]}

Motojima, G. ^{[1
,4
]}

Shoji, M. ^{[1
]}

Masuzaki, S. ^{[1
]}

Michael, C. A. ^{[7
]}

Vacheslavov, L. N. ^{[8
,9
]}

Osakabe, M. ^{[1
,4
]}

Morisaki, T. ^{[1
,4
]}

机构：

[1] Natl Inst Nat Sci, Natl Inst Fus Sci, Toki, Gifu 5095292, Japan

[2] Kyushu Univ, Dept Adv Energy Engn, Kasuga, Fukuoka 8168580, Japan

[3] Natl Inst Quantum & Radiol Sci & Technol, Naka, Ibaraki, Japan

[4] SOKENDAI, Toki, Gifu 5095292, Japan

[5] Max Planck Inst Plasma Phys, Greifswald, Germany

[6] Gen Atom Co, San Diego, CA USA

[7] Univ Calif Los Angeles, Los Angeles, CA USA

[8] Budker Inst Nucl Phys, Novosibirsk 630090, Russia

[9] Novosibirsk State Univ, Novosibirsk 63000, Russia

来源：

NUCLEAR FUSION | 2019年 / 59卷 / 12期

关键词：

isotope effects; turbulence; LHD; transport; CONFINEMENT;

D O I：

10.1088/1741-4326/ab4237

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Positive isotope effects have been found in electron cyclotron resonant heating plasma of the Large Helical Device (LHD). The global energy confinement time (tau(E)) in deuterium (D) plasma is 16% better than in hydrogen (H) plasma for the same line-averaged density and absorption power. The power balance analyses showed a clear reduction in ion energy transport, while electron energy transport does not change dramatically. The global particle confinement time (tau(p)) is degraded in D plasma; tau(p) in D plasma is 20% worse than in H plasma for the same line-averaged density and absorption power. The difference in the density profile was not due to the neutral or impurity sources, but rather was due to the difference in the transport. Ion scale turbulence levels show isotope effects. The core turbulence (rho = 0.5-0.8) level is higher in D plasma than in H plasma in the low collisionality regime and is lower in D plasma than in H plasma. The density gradient and collisionality play a role in the core turbulence level.

引用

页数：13