CHANGES IN TOKAMAK PLASMA PROPERTIES DURING IMPURITY INJECTION.

S. Cohen; J. Cecchi; C. Daughney; S. Davis; D. Dimock; P. Efthimion; M. Finkenthal; R. Fonck; E. Hinnov; R. Hulse; D. Johnson; D. Manos; D. McNeill; S. Medley; E. Meservey

doi:10.1116/1.571526

CHANGES IN TOKAMAK PLASMA PROPERTIES DURING IMPURITY INJECTION.

S. Cohen, J. Cecchi, C. Daughney, S. Davis, D. Dimock, P. Efthimion, M. Finkenthal, R. Fonck, E. Hinnov, R. Hulse, D. Johnson, D. Manos, D. McNeill, S. Medley, E. Meservey

Research output: Contribution to journal › Conference article › peer-review

26 Scopus citations

Abstract

Certain applications of laser blow-off impurity injection, such as ion temperature measurement and spectral line identification, may require the ratio of injected ions-to-plasma electron density to exceed 0. 001. To achieve these concentrations, injection of micron-sized clusters as well as monatomic species has been relied on. In these cases the injected impurity can no longer be regarded as a nonperturbing trace sourced at the plasma edge. Therefore the variation of plasma parameters in PLT and PDX has been studied as a function of the amount of injected impurities, the species mix, and the type of impurity. The results are analyzed in terms of altered temperature profiles, impurity penetration profiles and impurity transport. These studies suggest criteria for performing nonperturbing transport experiments.

Original language	English (US)
Pages (from-to)	1226-1229
Number of pages	4
Journal	Journal of vacuum science & technology
Volume	20
Issue number	4
DOIs	https://doi.org/10.1116/1.571526
State	Published - 1981
Event	Proc of the Natl Symp of the Am Vac Soc, Pt 2 - Anaheim, Calif, USA Duration: Nov 2 1981 → Nov 6 1981

All Science Journal Classification (ASJC) codes

General Engineering

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10.1116/1.571526

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title = "CHANGES IN TOKAMAK PLASMA PROPERTIES DURING IMPURITY INJECTION.",

abstract = "Certain applications of laser blow-off impurity injection, such as ion temperature measurement and spectral line identification, may require the ratio of injected ions-to-plasma electron density to exceed 0. 001. To achieve these concentrations, injection of micron-sized clusters as well as monatomic species has been relied on. In these cases the injected impurity can no longer be regarded as a nonperturbing trace sourced at the plasma edge. Therefore the variation of plasma parameters in PLT and PDX has been studied as a function of the amount of injected impurities, the species mix, and the type of impurity. The results are analyzed in terms of altered temperature profiles, impurity penetration profiles and impurity transport. These studies suggest criteria for performing nonperturbing transport experiments.",

author = "S. Cohen and J. Cecchi and C. Daughney and S. Davis and D. Dimock and P. Efthimion and M. Finkenthal and R. Fonck and E. Hinnov and R. Hulse and D. Johnson and D. Manos and D. McNeill and S. Medley and E. Meservey",

year = "1981",

doi = "10.1116/1.571526",

language = "English (US)",

volume = "20",

pages = "1226--1229",

journal = "Journal of vacuum science & technology",

issn = "0022-5355",

publisher = "American Institute of Physics",

number = "4",

note = "Proc of the Natl Symp of the Am Vac Soc, Pt 2 ; Conference date: 02-11-1981 Through 06-11-1981",

}

TY - JOUR

T1 - CHANGES IN TOKAMAK PLASMA PROPERTIES DURING IMPURITY INJECTION.

AU - Cohen, S.

AU - Cecchi, J.

AU - Daughney, C.

AU - Davis, S.

AU - Dimock, D.

AU - Efthimion, P.

AU - Finkenthal, M.

AU - Fonck, R.

AU - Hinnov, E.

AU - Hulse, R.

AU - Johnson, D.

AU - Manos, D.

AU - McNeill, D.

AU - Medley, S.

AU - Meservey, E.

PY - 1981

Y1 - 1981

N2 - Certain applications of laser blow-off impurity injection, such as ion temperature measurement and spectral line identification, may require the ratio of injected ions-to-plasma electron density to exceed 0. 001. To achieve these concentrations, injection of micron-sized clusters as well as monatomic species has been relied on. In these cases the injected impurity can no longer be regarded as a nonperturbing trace sourced at the plasma edge. Therefore the variation of plasma parameters in PLT and PDX has been studied as a function of the amount of injected impurities, the species mix, and the type of impurity. The results are analyzed in terms of altered temperature profiles, impurity penetration profiles and impurity transport. These studies suggest criteria for performing nonperturbing transport experiments.

AB - Certain applications of laser blow-off impurity injection, such as ion temperature measurement and spectral line identification, may require the ratio of injected ions-to-plasma electron density to exceed 0. 001. To achieve these concentrations, injection of micron-sized clusters as well as monatomic species has been relied on. In these cases the injected impurity can no longer be regarded as a nonperturbing trace sourced at the plasma edge. Therefore the variation of plasma parameters in PLT and PDX has been studied as a function of the amount of injected impurities, the species mix, and the type of impurity. The results are analyzed in terms of altered temperature profiles, impurity penetration profiles and impurity transport. These studies suggest criteria for performing nonperturbing transport experiments.

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DO - 10.1116/1.571526

M3 - Conference article

AN - SCOPUS:0019551489

SN - 0022-5355

VL - 20

SP - 1226

EP - 1229

JO - Journal of vacuum science & technology

JF - Journal of vacuum science & technology

IS - 4

T2 - Proc of the Natl Symp of the Am Vac Soc, Pt 2

Y2 - 2 November 1981 through 6 November 1981

ER -

CHANGES IN TOKAMAK PLASMA PROPERTIES DURING IMPURITY INJECTION.

Abstract

All Science Journal Classification (ASJC) codes

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