Physics of the L-mode to H-mode transition in tokamaks

K. H. Burrell; T. N. Carlstrom; E. J. Doyle; D. Finkenthal; P. Gohil; R. J. Groebner; D. L. Hillis; J. Kim; H. Matsumoto; R. A. Moyer; T. H. Osborne; C. L. Rettig; W. A. Peebles; T. L. Rhodes; H. StJohn; R. D. Stambaugh; M. R. Wade; J. G. Watkins

doi:10.1088/0741-3335/34/13/014

Physics of the L-mode to H-mode transition in tokamaks

K. H. Burrell, T. N. Carlstrom, E. J. Doyle, D. Finkenthal, P. Gohil, R. J. Groebner, D. L. Hillis, J. Kim, H. Matsumoto, R. A. Moyer, T. H. Osborne, C. L. Rettig, W. A. Peebles, T. L. Rhodes, H. StJohn, R. D. Stambaugh, M. R. Wade, J. G. Watkins

Fusion and Fission Energy and Science Di

Research output: Contribution to journal › Article › peer-review

200 Scopus citations

Abstract

Combined theoretical and experimental work has resulted in the creation of a paradigm which has allowed semi-quantitative understanding of the edge confinement improvement that occurs in the H-mode. Shear in the E*B flow of the fluctuations in the plasma edge can lead to decorrelation of the fluctuations, decreased radial correlation lengths and reduced turbulent transport. Changes in the radial electric field, the density fluctuations and the edge transport consistent with shear stabilization of turbulence have been seen in several tokamaks. The purpose of this paper is to discuss the most recent data in the light of the basic paradigm of electric field shear stabilization and to critically compare the experimental results with various theories.

Original language	English
Article number	014
Pages (from-to)	1859-1869
Number of pages	11
Journal	Plasma Physics and Controlled Fusion
Volume	34
Issue number	13
DOIs	https://doi.org/10.1088/0741-3335/34/13/014
State	Published - 1992

Funding

The authors would like to acknowledge fruitful discussions with P.H. Diamond, A.R. Field, G. Fussmann, F.L. Hinton, K. Ida, S.-I. and K. Itoh, Y.B. Kim, T.K. Kurki-Suonio, KC. Shaing, En: Taylor, G. Tynan and F. Wa er. This work was supported by the U.S. Department of under Contract Nos. DE-A zn0 3-89ER51114, DEFG03-89ER51121, DEFG03-86ER53225, DE-?%05-840R21400, and DE-AC03-76DP00789.

Keywords

Confinement
DIII-D
Divertor
Fusion
H-mode
L to H transition
L-mode
Tokamak

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1088/0741-3335/34/13/014

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Burrell, K. H., Carlstrom, T. N., Doyle, E. J., Finkenthal, D., Gohil, P., Groebner, R. J., Hillis, D. L., Kim, J., Matsumoto, H., Moyer, R. A., Osborne, T. H., Rettig, C. L., Peebles, W. A., Rhodes, T. L., StJohn, H., Stambaugh, R. D., Wade, M. R., & Watkins, J. G. (1992). Physics of the L-mode to H-mode transition in tokamaks. Plasma Physics and Controlled Fusion, 34(13), 1859-1869. Article 014. https://doi.org/10.1088/0741-3335/34/13/014

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title = "Physics of the L-mode to H-mode transition in tokamaks",

abstract = "Combined theoretical and experimental work has resulted in the creation of a paradigm which has allowed semi-quantitative understanding of the edge confinement improvement that occurs in the H-mode. Shear in the E*B flow of the fluctuations in the plasma edge can lead to decorrelation of the fluctuations, decreased radial correlation lengths and reduced turbulent transport. Changes in the radial electric field, the density fluctuations and the edge transport consistent with shear stabilization of turbulence have been seen in several tokamaks. The purpose of this paper is to discuss the most recent data in the light of the basic paradigm of electric field shear stabilization and to critically compare the experimental results with various theories.",

keywords = "Confinement, DIII-D, Divertor, Fusion, H-mode, L to H transition, L-mode, Tokamak",

author = "Burrell, {K. H.} and Carlstrom, {T. N.} and Doyle, {E. J.} and D. Finkenthal and P. Gohil and Groebner, {R. J.} and Hillis, {D. L.} and J. Kim and H. Matsumoto and Moyer, {R. A.} and Osborne, {T. H.} and Rettig, {C. L.} and Peebles, {W. A.} and Rhodes, {T. L.} and H. StJohn and Stambaugh, {R. D.} and Wade, {M. R.} and Watkins, {J. G.}",

year = "1992",

doi = "10.1088/0741-3335/34/13/014",

language = "English",

volume = "34",

pages = "1859--1869",

journal = "Plasma Physics and Controlled Fusion",

issn = "0741-3335",

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Burrell, KH, Carlstrom, TN, Doyle, EJ, Finkenthal, D, Gohil, P, Groebner, RJ, Hillis, DL, Kim, J, Matsumoto, H, Moyer, RA, Osborne, TH, Rettig, CL, Peebles, WA, Rhodes, TL, StJohn, H, Stambaugh, RD, Wade, MR & Watkins, JG 1992, 'Physics of the L-mode to H-mode transition in tokamaks', Plasma Physics and Controlled Fusion, vol. 34, no. 13, 014, pp. 1859-1869. https://doi.org/10.1088/0741-3335/34/13/014

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T1 - Physics of the L-mode to H-mode transition in tokamaks

AU - Burrell, K. H.

AU - Carlstrom, T. N.

AU - Doyle, E. J.

AU - Finkenthal, D.

AU - Gohil, P.

AU - Groebner, R. J.

AU - Hillis, D. L.

AU - Kim, J.

AU - Matsumoto, H.

AU - Moyer, R. A.

AU - Osborne, T. H.

AU - Rettig, C. L.

AU - Peebles, W. A.

AU - Rhodes, T. L.

AU - StJohn, H.

AU - Stambaugh, R. D.

AU - Wade, M. R.

AU - Watkins, J. G.

PY - 1992

Y1 - 1992

N2 - Combined theoretical and experimental work has resulted in the creation of a paradigm which has allowed semi-quantitative understanding of the edge confinement improvement that occurs in the H-mode. Shear in the E*B flow of the fluctuations in the plasma edge can lead to decorrelation of the fluctuations, decreased radial correlation lengths and reduced turbulent transport. Changes in the radial electric field, the density fluctuations and the edge transport consistent with shear stabilization of turbulence have been seen in several tokamaks. The purpose of this paper is to discuss the most recent data in the light of the basic paradigm of electric field shear stabilization and to critically compare the experimental results with various theories.

AB - Combined theoretical and experimental work has resulted in the creation of a paradigm which has allowed semi-quantitative understanding of the edge confinement improvement that occurs in the H-mode. Shear in the E*B flow of the fluctuations in the plasma edge can lead to decorrelation of the fluctuations, decreased radial correlation lengths and reduced turbulent transport. Changes in the radial electric field, the density fluctuations and the edge transport consistent with shear stabilization of turbulence have been seen in several tokamaks. The purpose of this paper is to discuss the most recent data in the light of the basic paradigm of electric field shear stabilization and to critically compare the experimental results with various theories.

KW - Confinement

KW - DIII-D

KW - Divertor

KW - Fusion

KW - H-mode

KW - L to H transition

KW - L-mode

KW - Tokamak

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Physics of the L-mode to H-mode transition in tokamaks

Abstract

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Keywords

UN SDGs

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