Investigation of gas puff induced fluctuation suppression in ADITYA tokamak

被引：25

作者：

Jha, R. ^{[1
]}

Sen, A. ^{[1
]}

Kaw, P. K. ^{[1
]}

Atrey, P. K. ^{[1
]}

Bhatt, S. B. ^{[1
]}

Bisai, N. ^{[1
]}

Tahiliani, K. ^{[1
]}

Tanna, R. L. ^{[1
]}

机构：

[1] Inst Plasma Res, Bhat 382428, Gandhinagar, India

来源：

PLASMA PHYSICS AND CONTROLLED FUSION | 2009年 / 51卷 / 09期

关键词：

STATIONARY PLASMA ENERGY; STRONG EDGE RADIATION; H-MODE; HIGH CONFINEMENT; REYNOLDS STRESS; HIGH-DENSITY; DIII-D; TRANSPORT; TURBULENCE; DISCHARGES;

D O I：

10.1088/0741-3335/51/9/095010

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：

An experiment aimed at investigating the cause of fluctuation suppression by gas puffing in the edge and scrape-off layer plasma of the ADITYA tokamak is reported. The fluctuation suppression is accompanied by a flattening of the radial profiles of the floating potential, plasma density and electrostatic Reynolds stress. Both the fluctuation suppression and the simultaneous reduction in particle flux occur throughout the observed region of the plasma edge. The bolometer data also show an increase in the edge radiation from 20% to 40% of the input power during the gas puff. These results indicate a significant role of edge cooling in the fluctuation suppression mechanism and are shown to be well explained in terms of a concomitant reduction in the growth rate of the interchange instability associated with the electron temperature gradient.

引用

页数：17

共 50 条

[41] FLUCTUATION-INDUCED INWARD PARTICLE-TRANSPORT IN THE TOKAMAK SOL PLASMA
JHA, R
KAW, PK
MATTOO, SK
RAO, CVS
SAXENA, YC
SINGH, R
NUCLEAR FUSION, 1993, 33 (08) : 1201 - 1204
[42] Experimental investigation of the propagation properties of an edge fluctuation in the KT-5C tokamak
Zhai, K
Xu, YH
Wen, YZ
Yu, CX
Liu, WD
Wang, C
Zhuang, G
Xu, ZZ
JOURNAL OF PLASMA PHYSICS, 1997, 58 : 601 - 612
[43] New dual gas puff imaging system with up-down symmetry on experimental advanced superconducting tokamak
Liu, S. C.
Shao, L. M.
Zweben, S. J.
Xu, G. S.
Guo, H. Y.
Cao, B.
Wang, H. Q.
Wang, L.
Yan, N.
Xia, S. B.
Zhang, W.
Chen, R.
Chen, L.
Ding, S. Y.
Xiong, H.
Zhao, Y.
Wan, B. N.
Gong, X. Z.
Gao, X.
REVIEW OF SCIENTIFIC INSTRUMENTS, 2012, 83 (12):
[44] Comparison of beam emission spectroscopy and gas puff imaging edge fluctuation measurements in National Spherical Torus Experiment
Sechrest, Y.
Smith, D.
Stotler, D. P.
Munsat, T.
Zweben, S. J.
PHYSICS OF PLASMAS, 2015, 22 (05)
[45] Investigation of Temporal Evolution of Hard X-Ray Spectrum from Neon-Seeded Plasma of ADITYA-U Tokamak
Purohit, Shishir
Gupta, Manoj K.
Chowdhuri, Malay B.
Nagora, Umesh
Taunk, Yashika
Kumar, Abhishek
Garg, Kajal
Pathak, Surya K.
Jadeja, Kumarpalsinh A.
Kumar, Rohit
Tahiliani, Kumudni
Kumar, Sameer
Patel, Kaushal M.
Tanna, Rakesh L.
Nair, Supriya A.
ADITYA U Team
PLASMA AND FUSION RESEARCH, 2023, 18
[46] Investigation of Temporal Evolution of Hard X-Ray Spectrum from Neon-Seeded Plasma of ADITYA-U Tokamak
Purohit S.
Gupta M.K.
Chowdhuri M.B.
Nagora U.
Taunk Y.
Kumar A.
Garg K.
Pathak S.K.
Jadeja K.A.
Kumar R.
Tahiliani K.
Kumar S.
Patel K.M.
Tanna R.L.
Nair S.A.
Ghosh J.
Team A.-U.
Plasma and Fusion Research, 2023, 18 : 2402079 - 1
[47] Study of the L-I-H transition with a new dual gas puff imaging system in the EAST superconducting tokamak
Xu, G. S.
Shao, L. M.
Liu, S. C.
Wang, H. Q.
Wan, B. N.
Guo, H. Y.
Diamond, P. H.
Tynan, G. R.
Xu, M.
Zweben, S. J.
Naulin, V.
Nielsen, A. H.
Rasmussen, J. Juul
Fedorczak, N.
Manz, P.
Miki, K.
Yan, N.
Chen, R.
Cao, B.
Chen, L.
Wang, L.
Zhang, W.
Gong, X. Z.
NUCLEAR FUSION, 2014, 54 (01)
[48] Experimental Study for Comparison of H2 and Ar-H2 Gas Mixture Glow Discharge Wall Conditioning in ADITYA Tokamak
Jadeja, Kumarpalsinh. A.
Patel, Kaushal M.
Tanna, Rakesh L.
Sangwan, Deepak
Acharya, Kaushik S.
Patel, Nilesh D.
Bhatt, Shailesh B.
Manchanda, Ranjana
Ghosh, Joydeep
IEEE TRANSACTIONS ON PLASMA SCIENCE, 2016, 44 (04) : 722 - 726
[49] Investigation of atomic and molecular processes in Hα emission through modelling of measured Hα emissivity profile using DEGAS2 in the ADITYA tokamak
Dey, Ritu
Chowdhuri, M. B.
Ghosh, Joydeep
Manchanda, R.
Yadava, Nandini
Ramaiya, N.
Banerjee, S.
Nagora, U. C.
Atrey, P. K.
Raval, J., V
Joisa, Y. Shankar
Tanna, R. L.
Stotler, D. P.
NUCLEAR FUSION, 2019, 59 (07)
[50] Impact of resonant magnetic perturbation on blob motion and structure using a gas puff imaging diagnostic on the HL-2A tokamak
Yuan, Jinbang
Xu, Min
Yu, Yi
Yuan, Boda
Nie, Lin
Ji, Xiaoquan
Sun, Tengfei
Wang, Ao
LI, Jiquan
PLASMA SCIENCE & TECHNOLOGY, 2023, 25 (09)

← 1 2 3 4 5 →