Off-axis sawteeth and double-tearing reconnection in reversed magnetic shear plasmas in TFTR

被引：160

作者：

Chang, Z ^{[1
]}

Park, W ^{[1
]}

Fredrickson, ED ^{[1
]}

Batha, SH ^{[1
]}

Bell, MG ^{[1
]}

Bell, R ^{[1
]}

Budny, RV ^{[1
]}

Bush, CE ^{[1
]}

Janos, A ^{[1
]}

Levinton, FM ^{[1
]}

McGuire, KM ^{[1
]}

Park, H ^{[1
]}

Sabbagh, SA ^{[1
]}

Schmidt, GL ^{[1
]}

Scott, SD ^{[1
]}

Synakowski, EJ ^{[1
]}

Takahashi, H ^{[1
]}

Taylor, G ^{[1
]}

Zarnstorff, MC ^{[1
]}

机构：

[1] COLUMBIA UNIV,NEW YORK,NY 10027

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.77.3553

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Off-axis sawteeth are often observed in reversed magnetic shear plasmas when the minimum safety factor q is near or below 2. Fluctuations with m/n=2/1 (m and n are the poloidal and toroidal mode numbers) appear before and after the crashes. Detailed comparison has been made between the measured T-e profile evaluation during the crash and a nonlinear numerical magnetohydrodynamics simulation. The good agreement between observation and simulation indicates that the off-axis sawteeth are due to a double-tearing magnetic reconnection process.

引用

页码：3553 / 3556

页数：4

共 12 条

[1] A STANDARD DT SUPERSHOT SIMULATION
BUDNY, RV
[J]. NUCLEAR FUSION, 1994, 34 (09) : 1247 - 1262
[2] TEARING-MODE ACTIVITY FOR HOLLOW CURRENT PROFILES
CARRERAS, B
HICKS, HR
WADDELL, BV
[J]. NUCLEAR FUSION, 1979, 19 (05) : 583 - 596
[3] STRUCTURE OF THIN CURRENT LAYERS - IMPLICATIONS FOR MAGNETIC RECONNECTION
DRAKE, JF
KLEVA, RG
MANDT, ME
[J]. PHYSICAL REVIEW LETTERS, 1994, 73 (09) : 1251 - 1254
[4] OPERATION OF 2 GRATING POLYCHROMATORS ON TFTR AND NEW OBSERVATIONS OF MAGNETOHYDRODYNAMIC PHENOMENA
JANOS, A
MCCARTHY, M
FREDRICKSON, E
MCGUIRE, K
TAYLOR, G
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 1995, 66 (01) : 668 - 670
[5] Kadomtsev B., 1975, Sov. J. Plasma Phys, V1, P389
[6] THE MULTICHANNEL MOTIONAL STARK-EFFECT DIAGNOSTIC ON TFTR
LEVINTON, FM
[J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 1992, 63 (10) : 5157 - 5160
[7] IMPROVED CONFINEMENT WITH REVERSED MAGNETIC SHEAR IN TFTR
LEVINTON, FM
ZARNSTORFF, MC
BATHA, SH
BELL, M
BELL, RE
BUDNY, RV
BUSH, C
CHANG, Z
FREDRICKSON, E
JANOS, A
MANICKAM, J
RAMSEY, A
SABBAGH, SA
SCHMIDT, GL
SYNAKOWSKI, EJ
TAYLOR, G
[J]. PHYSICAL REVIEW LETTERS, 1995, 75 (24) : 4417 - 4420
[8] RECONNECTION RATES OF MAGNETIC-FIELDS INCLUDING THE EFFECTS OF VISCOSITY
PARK, W
MONTICELLO, DA
WHITE, RB
[J]. PHYSICS OF FLUIDS, 1984, 27 (01) : 137 - 149
[9] 3-DIMENSIONAL STELLARATOR EQUILIBRIUM AS AN OHMIC STEADY-STATE
PARK, W
MONTICELLO, DA
STRAUSS, H
MANICKAM, J
[J]. PHYSICS OF FLUIDS, 1986, 29 (04) : 1171 - 1175
[10] FINITE PRESSURE EFFECTS ON SAWTOOTH OSCILLATIONS
PARK, W
MONTICELLO, DA
FREDRICKSON, E
MCGUIRE, K
[J]. PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1991, 3 (03): : 507 - 510

← 1 2 →