TRANSIENT ELECTRON HEAT DIFFUSIVITY OBTAINED FROM TRACE IMPURITY INJECTION ON TFTR

被引:65
作者
KISSICK, MW [1 ]
FREDRICKSON, ED [1 ]
CALLEN, JD [1 ]
BUSH, CE [1 ]
CHANG, Z [1 ]
EFTHIMION, PC [1 ]
HULSE, RA [1 ]
MANSFIELD, DK [1 ]
PARK, HK [1 ]
SCHIVELL, JF [1 ]
SCOTT, SD [1 ]
SYNAKOWSKI, EJ [1 ]
TAYLOR, G [1 ]
ZARNSTORFF, MC [1 ]
机构
[1] UNIV WISCONSIN,DEPT NUCL ENGN & ENGN PHYS,MADISON,WI 53706
关键词
D O I
10.1088/0029-5515/34/3/I03
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
A new method for obtaining a transient ('pulse') electron heat diffusivity (chi(e)p) in the radial region 0.38 < r/a < 0.56 in TFTR L mode discharges is presented. Small electron temperature perturbations were caused by single bursts of injected impurities which radiated and cooled the plasma edge. A case of iron injection by laser ablation was found to be more definitive than a supporting helium gas puff case. In this new 'cold pulse' method, the authors concentrate on modelling just the electron temperature perturbations, tracked with electron cyclotron emission diagnostics, and on being able to justify separation of the perturbations in space and time from the cooling source. This chi(e)p is obtained for these two cases to be chi(e)p = (6.0 M2/S +/- 35%) approximately 4chi(e)power balance), which is consistent with but more definitive than results from other studies that are more susceptible to ambiguities in the source profile.
引用
收藏
页码:349 / 358
页数:10
相关论文
共 29 条
  • [1] TEST OF TE PROFILE INVARIANCE BY SENSITIVITY STUDIES
    BECKER, G
    [J]. NUCLEAR FUSION, 1992, 32 (06) : 1064 - 1070
  • [2] EXPERIMENTAL-EVIDENCE FOR COUPLING OF PLASMA PARTICLE AND HEAT-TRANSPORT IN THE TEXT TOKAMAK
    BROWER, DL
    KIM, SK
    WENZEL, KW
    AUSTIN, ME
    FOSTER, MS
    GANDY, RF
    LUHMANN, NC
    MCCOOL, SC
    NAGATSU, M
    PEEBLES, WA
    RITZ, CP
    YU, CX
    [J]. PHYSICAL REVIEW LETTERS, 1990, 65 (03) : 337 - 340
  • [3] EXPERIMENTAL-MEASUREMENT OF ELECTRON HEAT DIFFUSIVITY IN A TOKAMAK
    CALLEN, JD
    JAHNS, GL
    [J]. PHYSICAL REVIEW LETTERS, 1977, 38 (09) : 491 - 494
  • [4] MODELING OF TEMPERATURE PROFILES AND TRANSPORT SCALING IN AUXILIARY HEATED TOKAMAKS
    CALLEN, JD
    CHRISTIANSEN, JP
    CORDEY, JG
    THOMAS, PR
    THOMSEN, K
    [J]. NUCLEAR FUSION, 1987, 27 (11) : 1857 - 1875
  • [5] PERTURBATIVE TRANSPORT STUDIES AND RELATION TO CONFINEMENT
    CARDOZO, NJL
    KONINGS, JA
    PETERS, M
    [J]. NUCLEAR FUSION, 1992, 32 (09) : 1671 - 1678
  • [6] 20-CHANNEL GRATING POLYCHROMATOR FOR MILLIMETER WAVE PLASMA EMISSION MEASUREMENTS
    CAVALLO, A
    CUTLER, RC
    MCCARTHY, MP
    [J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 1988, 59 (06) : 889 - 894
  • [7] Coppi B., 1980, Comments on Plasma Physics and Controlled Fusion, V5, P261
  • [8] INTERPRETATION OF HEAT AND DENSITY PULSE MEASUREMENTS IN JET IN TERMS OF COUPLED TRANSPORT
    DEHAAS, JCM
    OROURKE, J
    SIPS, ACC
    CARDOZO, NJL
    [J]. NUCLEAR FUSION, 1991, 31 (07) : 1261 - 1274
  • [9] OBSERVATION OF TEMPERATURE-DEPENDENT TRANSPORT IN THE TFTR TOKAMAK
    EFTHIMION, PC
    MANSFIELD, DK
    STRATTON, BC
    SYNAKOWSKI, E
    BHATTACHARJEE, A
    BIGLARI, H
    DIAMOND, PH
    GOLDSTON, RJ
    HEGNA, CC
    MCCUNE, D
    REWOLDT, G
    SCOTT, S
    TANG, WM
    TAYLOR, G
    WALTZ, RE
    WIELAND, RM
    ZARNSTORFF, MC
    [J]. PHYSICAL REVIEW LETTERS, 1991, 66 (04) : 421 - 424
  • [10] HEAT PULSE-PROPAGATION STUDIES IN TFTR
    FREDRICKSON, ED
    CALLEN, JD
    MCGUIRE, K
    BELL, JD
    COLCHIN, RJ
    EFTHIMION, PC
    HILL, KW
    IZZO, R
    MIKKELSEN, DR
    MONTICELLO, DA
    PARE, V
    TAYLOR, G
    ZARNSTORFF, M
    [J]. NUCLEAR FUSION, 1986, 26 (07) : 849 - 862