Evidence for a local diffusive model of transport in a Tokamak

J. P. Christiansen; B. Balet; D. Boucher; C. D. Challis; J. G. Cordey; C. Gormezano; C. Gowers; G. Kramer; D. G. Muir; S. V. Neudatchin; J. O'Rourke; G. Schmidt; P. M. Stubberfield; A. Taroni; F. Tibone; B. Tubbing

Evidence for a local diffusive model of transport in a Tokamak

J. P. Christiansen, B. Balet, D. Boucher, C. D. Challis, J. G. Cordey, C. Gormezano, C. Gowers, G. Kramer, D. G. Muir, S. V. Neudatchin, J. O'Rourke, G. Schmidt, P. M. Stubberfield, A. Taroni, F. Tibone, B. Tubbing

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

20 Scopus citations

Abstract

Three series of recent experiments on JET have been dedicated to energy transport studies. Experiments with pellet injection followed by off-axis ICRH produce a heat sink on axis resulting in an inward thermal heat flux. A diffusive model for thermal flux with no heat pinch can adequately describe the data. It also describes the data from current ramp experiments in which total current is transiently decorrelated from the current distribution. The effective thermal diffusivity in L-mode confinement is found to scale with normalised Larmor radius according to Bohm in a series of nondimensional scaling experiments.

Original language	English (US)
Pages (from-to)	1881-1888
Number of pages	8
Journal	Plasma Physics and Controlled Fusion
Volume	34
Issue number	13
State	Published - Dec 1992
Externally published	Yes

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering
Condensed Matter Physics

Keywords

confinement
Fusion
JET
Tokamak
transport

Cite this

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title = "Evidence for a local diffusive model of transport in a Tokamak",

abstract = "Three series of recent experiments on JET have been dedicated to energy transport studies. Experiments with pellet injection followed by off-axis ICRH produce a heat sink on axis resulting in an inward thermal heat flux. A diffusive model for thermal flux with no heat pinch can adequately describe the data. It also describes the data from current ramp experiments in which total current is transiently decorrelated from the current distribution. The effective thermal diffusivity in L-mode confinement is found to scale with normalised Larmor radius according to Bohm in a series of nondimensional scaling experiments.",

keywords = "confinement, Fusion, JET, Tokamak, transport",

author = "Christiansen, \{J. P.\} and B. Balet and D. Boucher and Challis, \{C. D.\} and Cordey, \{J. G.\} and C. Gormezano and C. Gowers and G. Kramer and Muir, \{D. G.\} and Neudatchin, \{S. V.\} and J. O'Rourke and G. Schmidt and Stubberfield, \{P. M.\} and A. Taroni and F. Tibone and B. Tubbing",

year = "1992",

month = dec,

language = "English (US)",

volume = "34",

pages = "1881--1888",

journal = "Plasma Physics and Controlled Fusion",

issn = "0741-3335",

publisher = "IOP Publishing Ltd.",

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TY - JOUR

T1 - Evidence for a local diffusive model of transport in a Tokamak

AU - Christiansen, J. P.

AU - Balet, B.

AU - Boucher, D.

AU - Challis, C. D.

AU - Cordey, J. G.

AU - Gormezano, C.

AU - Gowers, C.

AU - Kramer, G.

AU - Muir, D. G.

AU - Neudatchin, S. V.

AU - O'Rourke, J.

AU - Schmidt, G.

AU - Stubberfield, P. M.

AU - Taroni, A.

AU - Tibone, F.

AU - Tubbing, B.

PY - 1992/12

Y1 - 1992/12

N2 - Three series of recent experiments on JET have been dedicated to energy transport studies. Experiments with pellet injection followed by off-axis ICRH produce a heat sink on axis resulting in an inward thermal heat flux. A diffusive model for thermal flux with no heat pinch can adequately describe the data. It also describes the data from current ramp experiments in which total current is transiently decorrelated from the current distribution. The effective thermal diffusivity in L-mode confinement is found to scale with normalised Larmor radius according to Bohm in a series of nondimensional scaling experiments.

AB - Three series of recent experiments on JET have been dedicated to energy transport studies. Experiments with pellet injection followed by off-axis ICRH produce a heat sink on axis resulting in an inward thermal heat flux. A diffusive model for thermal flux with no heat pinch can adequately describe the data. It also describes the data from current ramp experiments in which total current is transiently decorrelated from the current distribution. The effective thermal diffusivity in L-mode confinement is found to scale with normalised Larmor radius according to Bohm in a series of nondimensional scaling experiments.

KW - confinement

KW - Fusion

KW - JET

KW - Tokamak

KW - transport

UR - https://www.scopus.com/pages/publications/0011650275

UR - https://www.scopus.com/inward/citedby.url?scp=0011650275&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0011650275

SN - 0741-3335

VL - 34

SP - 1881

EP - 1888

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 13

ER -

Evidence for a local diffusive model of transport in a Tokamak

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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