Ohmic ion temperature and thermal diffusivity profiles from the JET neutron emission profile monitor

B. Esposito; F. B. Marcus; J. M. Adams; S. Conroy; O. N. Jarvis; M. J. Loughlin; G. Sadler; P. Van Belle; N. Watkins

doi:10.1088/0741-3335/35/10/006

Ohmic ion temperature and thermal diffusivity profiles from the JET neutron emission profile monitor

B. Esposito, F. B. Marcus, J. M. Adams, S. Conroy, O. N. Jarvis, M. J. Loughlin, G. Sadler, P. Van Belle, N. Watkins

Radiation Transport

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Abstract

The JET neutron emission profile monitor was used to study ohmically heated deuterium discharges. The radial profile of the neutron emissivity is deduced from the line-integral data. The profiles of ion temperature, T_i, and ion thermal diffusivity, chi _i, are derived under steady-state conditions. The inferred chi _i, for 0.3 < p = r/a < 0.5, is in the range 0.5-2.5m²s^-1. The ion thermal diffusivity is higher than, and its scaling with plasma current opposite to, that predicted by neoclassical theory.

Original language	English
Article number	006
Pages (from-to)	1433-1440
Number of pages	8
Journal	Plasma Physics and Controlled Fusion
Volume	35
Issue number	10
DOIs	https://doi.org/10.1088/0741-3335/35/10/006
State	Published - 1993

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title = "Ohmic ion temperature and thermal diffusivity profiles from the JET neutron emission profile monitor",

abstract = "The JET neutron emission profile monitor was used to study ohmically heated deuterium discharges. The radial profile of the neutron emissivity is deduced from the line-integral data. The profiles of ion temperature, Ti, and ion thermal diffusivity, chi i, are derived under steady-state conditions. The inferred chi i, for 0.3 < p = r/a < 0.5, is in the range 0.5-2.5m2s-1. The ion thermal diffusivity is higher than, and its scaling with plasma current opposite to, that predicted by neoclassical theory.",

author = "B. Esposito and Marcus, {F. B.} and Adams, {J. M.} and S. Conroy and Jarvis, {O. N.} and Loughlin, {M. J.} and G. Sadler and {Van Belle}, P. and N. Watkins",

year = "1993",

doi = "10.1088/0741-3335/35/10/006",

language = "English",

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T1 - Ohmic ion temperature and thermal diffusivity profiles from the JET neutron emission profile monitor

AU - Esposito, B.

AU - Marcus, F. B.

AU - Adams, J. M.

AU - Conroy, S.

AU - Jarvis, O. N.

AU - Loughlin, M. J.

AU - Sadler, G.

AU - Van Belle, P.

AU - Watkins, N.

PY - 1993

Y1 - 1993

N2 - The JET neutron emission profile monitor was used to study ohmically heated deuterium discharges. The radial profile of the neutron emissivity is deduced from the line-integral data. The profiles of ion temperature, Ti, and ion thermal diffusivity, chi i, are derived under steady-state conditions. The inferred chi i, for 0.3 < p = r/a < 0.5, is in the range 0.5-2.5m2s-1. The ion thermal diffusivity is higher than, and its scaling with plasma current opposite to, that predicted by neoclassical theory.

AB - The JET neutron emission profile monitor was used to study ohmically heated deuterium discharges. The radial profile of the neutron emissivity is deduced from the line-integral data. The profiles of ion temperature, Ti, and ion thermal diffusivity, chi i, are derived under steady-state conditions. The inferred chi i, for 0.3 < p = r/a < 0.5, is in the range 0.5-2.5m2s-1. The ion thermal diffusivity is higher than, and its scaling with plasma current opposite to, that predicted by neoclassical theory.

UR - http://www.scopus.com/inward/record.url?scp=0040341988&partnerID=8YFLogxK

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DO - 10.1088/0741-3335/35/10/006

M3 - Article

AN - SCOPUS:0040341988

SN - 0741-3335

VL - 35

SP - 1433

EP - 1440

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 10

M1 - 006

ER -

Ohmic ion temperature and thermal diffusivity profiles from the JET neutron emission profile monitor

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