Isotope effects in self-organization of internal transport barrier and concomitant edge confinement degradation in steady-state LHD plasmas

被引：0

作者：

T. Kobayashi

H. Takahashi

K. Nagaoka

M. Sasaki

M. Nakata

M. Yokoyama

R. Seki

M. Yoshinuma

K. Ida

机构：

[1] National Institutes of Natural Sciences,National Institute for Fusion Science

[2] SOKENDAI (The Graduate University for Advanced Studies),Research Institute for Applied Mechanics

[3] Kyushu University,undefined

来源：

Scientific Reports | / 9卷

关键词：

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The isotope effect, which has been a long-standing mystery in the turbulent magnetically confined plasmas, is the phenomena that the plasma generated with heavier hydrogen isotope show a mitigated transport. This is on the contrary to what is predicted with the simple scaling theory, in which the heavier ions easily diffuse because of its larger gyro-radius. Thanks to the newly developed analysis method and a comprehensive parameter scan experiment in the steady-state plasmas in the Large Helical Device (LHD), the isotope effect was clearly observed in the self-organized internal transport barrier (ITB) structure for the first time. Comparing the ITB intensity in deuterium (D) and hydrogen (H) plasmas, two distinct hydrogen isotope effects are found: stronger ITB is formed in D plasmas and a significant edge confinement degradation accompanied by the ITB formation emerges in H plasmas. This observation sheds light on a new aspect of the turbulent plasmas regarding how the basic properties of the fluid material affect the turbulent structure formation in the open-system.

引用

共 17 条

[1] Isotope effects in self-organization of internal transport barrier and concomitant edge confinement degradation in steady-state LHD plasmas
Kobayashi, T.
Takahashi, H.
Nagaoka, K.
Sasaki, M.
Nakata, M.
Yokoyama, M.
Seki, R.
Yoshinuma, M.
Ida, K.
SCIENTIFIC REPORTS, 2019, 9 (1)
[2] SELF-ORGANIZATION OF AGING IN A POPULATION APPROACHING THE STEADY-STATE
RAY, TS
JOURNAL OF STATISTICAL PHYSICS, 1994, 74 (3-4) : 929 - 939
[3] TRAPPING REACTION IN LOW DIMENSIONS - STEADY-STATE SELF-ORGANIZATION
CLEMENT, E
KOPELMAN, R
SANDER, LM
EUROPHYSICS LETTERS, 1990, 11 (08): : 707 - 712
[4] A review of internal transport barrier physics for steady-state operation of tokamaks
Connor, JW
Fukuda, T
Garbet, X
Gormezano, C
Mukhovatov, V
Wakatani, M
NUCLEAR FUSION, 2004, 44 (04) : R1 - R49
[5] Critical threshold behavior for steady-state internal transport barriers in burning plasmas
Giruzzi, Garcia G.
Artaud, J. F.
Basiuk, V.
Decker, J.
Imbeaux, F.
Peysson, Y.
Schneider, M.
PHYSICAL REVIEW LETTERS, 2008, 100 (25)
[6] STEADY-STATE HYDROGEN TRANSPORT IN SOLIDS EXPOSED TO FUSION-REACTOR PLASMAS, .3. ISOTOPE EFFECTS
BRICE, DK
JOURNAL OF NUCLEAR MATERIALS, 1984, 123 (1-3) : 1531 - 1535
[7] Formation of porous zinc nanostructures during self-organization of critically small steady-state supersaturations
Perekrestov, Vyacheslav
Kornyushchenko, Anna
Latyshev, Vitalii
Ostendorp, Stefan
Wilde, Gerhard
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2015, 252 (02): : 397 - 403
[8] Clear transition to high-Te state with an electron internal transport barrier creation in EC heated LHD plasmas
Shimozuma, T.
Kubo, S.
Igami, H.
Yoshimura, Y.
Notake, T.
Inagaki, S.
Tamura, N.
Ida, K.
Yokoyama, M.
Yamada, I.
Narihara, K.
Mutoh, T.
Komori, A.
11TH IAEA TECHNICAL MEETING ON H-MODE PHYSICS AND TRANSPORT BARRIERS, 2008, 123
[9] Self-organization of quasi-equilibrium steady-state condensation in accumulative ion-plasma devices
Perekrestov, V. I.
Olemskoi, A. I.
Kosminska, Yu O.
Mokrenko, A. A.
PHYSICS LETTERS A, 2009, 373 (37) : 3386 - 3391
[10] Confinement degradation by Alfven-eigenmode induced fast-ion transport in steady-state scenario discharges
Heidbrink, W. W.
Ferron, J. R.
Holcomb, C. T.
Van Zeeland, M. A.
Chen, Xi
Collins, C. M.
Garofalo, A.
Gong, X.
Grierson, B. A.
Podesta, M.
Stagner, L.
Zhu, Y.
PLASMA PHYSICS AND CONTROLLED FUSION, 2014, 56 (09)

← 1 2 →