Transient response of transport at transport barrier formation

Kimitaka Itoh; Sanae I. Itoh

doi:10.1088/0741-3335/44/5A/339

Transient response of transport at transport barrier formation

Kimitaka Itoh, Sanae I. Itoh

Division of Nuclear Fusion Dynamics

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

3 Citations (Scopus)

Abstract

Transient transport in high-temperature and turbulent plasmas is investigated. Microscopic fluctuations in toroidal plasmas are localized in the outside of the torus, so that the radial correlation length of fluctuations is meso-scale (hybrid between micro-scale and system size). The long radial correlation induces the interference of gradient and flux in different radii, and causes a fast propagation of transient response. The upper bound of thermal diffusivity, deduced from transients, is derived. The role of geometry in transport far from thermodynamical equilibrium is highlighted.

Original language	English
Article number	339
Pages (from-to)	A367-A372
Journal	Plasma Physics and Controlled Fusion
Volume	44
Issue number	5 A
DOIs	https://doi.org/10.1088/0741-3335/44/5A/339
Publication status	Published - May 2002
Event	8th IAEA Technical Committee Meeting on H-Mode Physics and Transport Barriers - Toki, Japan Duration: Sept 5 2001 → Sept 7 2001

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering
Condensed Matter Physics

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10.1088/0741-3335/44/5A/339

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title = "Transient response of transport at transport barrier formation",

abstract = "Transient transport in high-temperature and turbulent plasmas is investigated. Microscopic fluctuations in toroidal plasmas are localized in the outside of the torus, so that the radial correlation length of fluctuations is meso-scale (hybrid between micro-scale and system size). The long radial correlation induces the interference of gradient and flux in different radii, and causes a fast propagation of transient response. The upper bound of thermal diffusivity, deduced from transients, is derived. The role of geometry in transport far from thermodynamical equilibrium is highlighted.",

author = "Kimitaka Itoh and Itoh, {Sanae I.}",

year = "2002",

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journal = "Plasma Physics and Controlled Fusion",

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AU - Itoh, Kimitaka

AU - Itoh, Sanae I.

PY - 2002/5

Y1 - 2002/5

N2 - Transient transport in high-temperature and turbulent plasmas is investigated. Microscopic fluctuations in toroidal plasmas are localized in the outside of the torus, so that the radial correlation length of fluctuations is meso-scale (hybrid between micro-scale and system size). The long radial correlation induces the interference of gradient and flux in different radii, and causes a fast propagation of transient response. The upper bound of thermal diffusivity, deduced from transients, is derived. The role of geometry in transport far from thermodynamical equilibrium is highlighted.

AB - Transient transport in high-temperature and turbulent plasmas is investigated. Microscopic fluctuations in toroidal plasmas are localized in the outside of the torus, so that the radial correlation length of fluctuations is meso-scale (hybrid between micro-scale and system size). The long radial correlation induces the interference of gradient and flux in different radii, and causes a fast propagation of transient response. The upper bound of thermal diffusivity, deduced from transients, is derived. The role of geometry in transport far from thermodynamical equilibrium is highlighted.

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DO - 10.1088/0741-3335/44/5A/339

M3 - Conference article

AN - SCOPUS:0036573384

SN - 0741-3335

VL - 44

SP - A367-A372

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 5 A

M1 - 339

T2 - 8th IAEA Technical Committee Meeting on H-Mode Physics and Transport Barriers

Y2 - 5 September 2001 through 7 September 2001

ER -

Transient response of transport at transport barrier formation

Abstract

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