Turbulent fluctuations in TFTR configurations with reversed magnetic shear

E. Mazzucato, S. H. Batha, Michael Beer, M. Bell, R. E. Bell, R. V. Budny, C. Bush, T. S. Hahm, G. W. Hammett, F. M. Levinton, R. Nazikian, H. Park, G. Rewoldt, G. L. Schmidt, E. J. Synakowski, W. M. Tang, G. Taylor, M. C. Zarnstorff

Research output: Contribution to journalArticle

Abstract

Turbulent fluctuations in plasmas with reversed magnetic shear have been investigated on the Tokamak Fusion Test Reactor. Under intense auxiliary heating, these plasmas are observed to bifurcate into two states with different transport properties. In the state with better confinement, it has been found that the level of fluctuations is very small throughout most of the region with negative shear. By contrast, the state with lower confinement is characterized by large bursts of fluctuations which suggest a competition between the driving and the suppression of turbulence. These results are consistent with the suppression of turbulence by the E × B velocity shear.

Original languageEnglish (US)
Pages (from-to)3145-3148
Number of pages4
JournalPhysical Review Letters
Volume77
Issue number15
StatePublished - 1996
Externally publishedYes

Fingerprint

shear
configurations
turbulence
retarding
plasma heating
bursts
fusion
transport properties
reactors

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Mazzucato, E., Batha, S. H., Beer, M., Bell, M., Bell, R. E., Budny, R. V., ... Zarnstorff, M. C. (1996). Turbulent fluctuations in TFTR configurations with reversed magnetic shear. Physical Review Letters, 77(15), 3145-3148.

Turbulent fluctuations in TFTR configurations with reversed magnetic shear. / Mazzucato, E.; Batha, S. H.; Beer, Michael; Bell, M.; Bell, R. E.; Budny, R. V.; Bush, C.; Hahm, T. S.; Hammett, G. W.; Levinton, F. M.; Nazikian, R.; Park, H.; Rewoldt, G.; Schmidt, G. L.; Synakowski, E. J.; Tang, W. M.; Taylor, G.; Zarnstorff, M. C.

In: Physical Review Letters, Vol. 77, No. 15, 1996, p. 3145-3148.

Research output: Contribution to journalArticle

Mazzucato, E, Batha, SH, Beer, M, Bell, M, Bell, RE, Budny, RV, Bush, C, Hahm, TS, Hammett, GW, Levinton, FM, Nazikian, R, Park, H, Rewoldt, G, Schmidt, GL, Synakowski, EJ, Tang, WM, Taylor, G & Zarnstorff, MC 1996, 'Turbulent fluctuations in TFTR configurations with reversed magnetic shear', Physical Review Letters, vol. 77, no. 15, pp. 3145-3148.
Mazzucato E, Batha SH, Beer M, Bell M, Bell RE, Budny RV et al. Turbulent fluctuations in TFTR configurations with reversed magnetic shear. Physical Review Letters. 1996;77(15):3145-3148.
Mazzucato, E. ; Batha, S. H. ; Beer, Michael ; Bell, M. ; Bell, R. E. ; Budny, R. V. ; Bush, C. ; Hahm, T. S. ; Hammett, G. W. ; Levinton, F. M. ; Nazikian, R. ; Park, H. ; Rewoldt, G. ; Schmidt, G. L. ; Synakowski, E. J. ; Tang, W. M. ; Taylor, G. ; Zarnstorff, M. C. / Turbulent fluctuations in TFTR configurations with reversed magnetic shear. In: Physical Review Letters. 1996 ; Vol. 77, No. 15. pp. 3145-3148.
@article{0ee5463486fc41ed9f1affc6b0673aed,
title = "Turbulent fluctuations in TFTR configurations with reversed magnetic shear",
abstract = "Turbulent fluctuations in plasmas with reversed magnetic shear have been investigated on the Tokamak Fusion Test Reactor. Under intense auxiliary heating, these plasmas are observed to bifurcate into two states with different transport properties. In the state with better confinement, it has been found that the level of fluctuations is very small throughout most of the region with negative shear. By contrast, the state with lower confinement is characterized by large bursts of fluctuations which suggest a competition between the driving and the suppression of turbulence. These results are consistent with the suppression of turbulence by the E × B velocity shear.",
author = "E. Mazzucato and Batha, {S. H.} and Michael Beer and M. Bell and Bell, {R. E.} and Budny, {R. V.} and C. Bush and Hahm, {T. S.} and Hammett, {G. W.} and Levinton, {F. M.} and R. Nazikian and H. Park and G. Rewoldt and Schmidt, {G. L.} and Synakowski, {E. J.} and Tang, {W. M.} and G. Taylor and Zarnstorff, {M. C.}",
year = "1996",
language = "English (US)",
volume = "77",
pages = "3145--3148",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "15",

}

TY - JOUR

T1 - Turbulent fluctuations in TFTR configurations with reversed magnetic shear

AU - Mazzucato, E.

AU - Batha, S. H.

AU - Beer, Michael

AU - Bell, M.

AU - Bell, R. E.

AU - Budny, R. V.

AU - Bush, C.

AU - Hahm, T. S.

AU - Hammett, G. W.

AU - Levinton, F. M.

AU - Nazikian, R.

AU - Park, H.

AU - Rewoldt, G.

AU - Schmidt, G. L.

AU - Synakowski, E. J.

AU - Tang, W. M.

AU - Taylor, G.

AU - Zarnstorff, M. C.

PY - 1996

Y1 - 1996

N2 - Turbulent fluctuations in plasmas with reversed magnetic shear have been investigated on the Tokamak Fusion Test Reactor. Under intense auxiliary heating, these plasmas are observed to bifurcate into two states with different transport properties. In the state with better confinement, it has been found that the level of fluctuations is very small throughout most of the region with negative shear. By contrast, the state with lower confinement is characterized by large bursts of fluctuations which suggest a competition between the driving and the suppression of turbulence. These results are consistent with the suppression of turbulence by the E × B velocity shear.

AB - Turbulent fluctuations in plasmas with reversed magnetic shear have been investigated on the Tokamak Fusion Test Reactor. Under intense auxiliary heating, these plasmas are observed to bifurcate into two states with different transport properties. In the state with better confinement, it has been found that the level of fluctuations is very small throughout most of the region with negative shear. By contrast, the state with lower confinement is characterized by large bursts of fluctuations which suggest a competition between the driving and the suppression of turbulence. These results are consistent with the suppression of turbulence by the E × B velocity shear.

UR - http://www.scopus.com/inward/record.url?scp=3342928902&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=3342928902&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:3342928902

VL - 77

SP - 3145

EP - 3148

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 15

ER -