Ion thermal confinement in the enhanced-confinement regime of the TFTR tokamak

R. J. Fonck; R. Howell; K. Jaehnig; L. Roquemore; G. Schilling; S. Scott; M. C. Zarnstorff; C. Bush; R. Goldston; H. Hsuan; D. Johnson; A. Ramsey; J. Schivell; H. Towner

doi:10.1103/PhysRevLett.63.520

Ion thermal confinement in the enhanced-confinement regime of the TFTR tokamak

R. J. Fonck, R. Howell, K. Jaehnig, L. Roquemore, G. Schilling, S. Scott, M. C. Zarnstorff, C. Bush, R. Goldston, H. Hsuan, D. Johnson, A. Ramsey, J. Schivell, H. Towner

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

39 Scopus citations

Abstract

Central ion temperatures up to 30 keV and rotation speeds up to 8×105 m/sec have been confirmed with new diagnostic measurements in the TFTR hot-ion enhanced-confinement regime, and the ion thermal diffusivity is found to be non-neoclassical and comparable to the anomalous electron thermal diffusivity. The dominant effect of strong rotation is the down-shifting of the neutral beam energies in the plasma frame, which results in reduced ion and electron heating on axis, and the presence of off-axis ion heating from viscous damping of the plasma rotation.

Original language	English (US)
Pages (from-to)	520-523
Number of pages	4
Journal	Physical review letters
Volume	63
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.63.520
State	Published - 1989

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

Access to Document

10.1103/PhysRevLett.63.520

Cite this

@article{1fb30edb220340faa488e9bc6b444a07,

title = "Ion thermal confinement in the enhanced-confinement regime of the TFTR tokamak",

abstract = "Central ion temperatures up to 30 keV and rotation speeds up to 8×105 m/sec have been confirmed with new diagnostic measurements in the TFTR hot-ion enhanced-confinement regime, and the ion thermal diffusivity is found to be non-neoclassical and comparable to the anomalous electron thermal diffusivity. The dominant effect of strong rotation is the down-shifting of the neutral beam energies in the plasma frame, which results in reduced ion and electron heating on axis, and the presence of off-axis ion heating from viscous damping of the plasma rotation.",

author = "Fonck, {R. J.} and R. Howell and K. Jaehnig and L. Roquemore and G. Schilling and S. Scott and Zarnstorff, {M. C.} and C. Bush and R. Goldston and H. Hsuan and D. Johnson and A. Ramsey and J. Schivell and H. Towner",

year = "1989",

doi = "10.1103/PhysRevLett.63.520",

language = "English (US)",

volume = "63",

pages = "520--523",

journal = "Physical review letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - Ion thermal confinement in the enhanced-confinement regime of the TFTR tokamak

AU - Fonck, R. J.

AU - Howell, R.

AU - Jaehnig, K.

AU - Roquemore, L.

AU - Schilling, G.

AU - Scott, S.

AU - Zarnstorff, M. C.

AU - Bush, C.

AU - Goldston, R.

AU - Hsuan, H.

AU - Johnson, D.

AU - Ramsey, A.

AU - Schivell, J.

AU - Towner, H.

PY - 1989

Y1 - 1989

N2 - Central ion temperatures up to 30 keV and rotation speeds up to 8×105 m/sec have been confirmed with new diagnostic measurements in the TFTR hot-ion enhanced-confinement regime, and the ion thermal diffusivity is found to be non-neoclassical and comparable to the anomalous electron thermal diffusivity. The dominant effect of strong rotation is the down-shifting of the neutral beam energies in the plasma frame, which results in reduced ion and electron heating on axis, and the presence of off-axis ion heating from viscous damping of the plasma rotation.

AB - Central ion temperatures up to 30 keV and rotation speeds up to 8×105 m/sec have been confirmed with new diagnostic measurements in the TFTR hot-ion enhanced-confinement regime, and the ion thermal diffusivity is found to be non-neoclassical and comparable to the anomalous electron thermal diffusivity. The dominant effect of strong rotation is the down-shifting of the neutral beam energies in the plasma frame, which results in reduced ion and electron heating on axis, and the presence of off-axis ion heating from viscous damping of the plasma rotation.

UR - http://www.scopus.com/inward/record.url?scp=5344236028&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=5344236028&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.63.520

DO - 10.1103/PhysRevLett.63.520

M3 - Article

C2 - 10041096

AN - SCOPUS:5344236028

SN - 0031-9007

VL - 63

SP - 520

EP - 523

JO - Physical review letters

JF - Physical review letters

IS - 5

ER -

Ion thermal confinement in the enhanced-confinement regime of the TFTR tokamak

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this