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Gamma-ray emission profile measurements during JET ICRH discharges

Abstract

Gamma-ray emission from plasma-impurity reactions caused by minority ICRH accelerating fuel ions to MeV energies has been measured using the JET neutron profile monitor. A successful data analysis technique has been used to isolate the RF-induced gamma-ray emission that was detected, enabling profiles of gamma-ray emission to be obtained. The 2-d gamma-ray emission profiles show that virtually all the radiation originates from the low field side of the RF resonance layer, as expected from RF-induced pitch angle diffusion. The emission profiles indicate the presence of a small population of resonant {sup 3}He ions that possess orbits lying near the passing-trapped boundary. 6 refs., 4 figs.
Authors:
Jarvis, O N; Marcus, F B; Sadler, G; Van Belle, P; [1]  Howarth, P J.A.; [2]  Adams, J M; Bond, D S [3] 
  1. Commission of the European Communities, Abingdon (United Kingdom). JET Joint Undertaking
  2. Birmingham Univ. (United Kingdom)
  3. UKAEA Harwell Lab. (United Kingdom). Energy Technology Div.
Publication Date:
Jul 01, 1994
Product Type:
Conference
Report Number:
JET-P-94-29; CONF-9406270-
Reference Number:
SCA: 700320; 700350; 700380; PA: AIX-28:032637; EDB-97:058889; SN: 97001766231
Resource Relation:
Conference: 21. EPS conference on controlled fusion and plasma physics, Montpellier (France), 27 Jun - 1 Jul 1994; Other Information: PBD: Jul 1994; Related Information: Is Part Of Controlled fusion and plasma physics; PB: 240 p.
Subject:
70 PLASMA PHYSICS AND FUSION; GAMMA DETECTION; ICR HEATING; PLASMA DIAGNOSTICS; JET TOKAMAK; ENERGY LOSSES; GAMMA RADIATION; GAMMA SPECTRA; ORBITS; PARTICLE LOSSES; PLASMA CONFINEMENT; PLASMA IMPURITIES
OSTI ID:
456167
Research Organizations:
Commission of the European Communities, Abingdon (United Kingdom). JET Joint Undertaking
Country of Origin:
France
Language:
English
Other Identifying Numbers:
Other: ON: DE97621358; TRN: FR9701757032637
Availability:
INIS; OSTI as DE97621358
Submitting Site:
FRN
Size:
pp. 37-42
Announcement Date:

Citation Formats

Jarvis, O N, Marcus, F B, Sadler, G, Van Belle, P, Howarth, P J.A., Adams, J M, and Bond, D S. Gamma-ray emission profile measurements during JET ICRH discharges. France: N. p., 1994. Web.
Jarvis, O N, Marcus, F B, Sadler, G, Van Belle, P, Howarth, P J.A., Adams, J M, & Bond, D S. Gamma-ray emission profile measurements during JET ICRH discharges. France.
Jarvis, O N, Marcus, F B, Sadler, G, Van Belle, P, Howarth, P J.A., Adams, J M, and Bond, D S. 1994. "Gamma-ray emission profile measurements during JET ICRH discharges." France.
@misc{etde_456167,
title = {Gamma-ray emission profile measurements during JET ICRH discharges}
author = {Jarvis, O N, Marcus, F B, Sadler, G, Van Belle, P, Howarth, P J.A., Adams, J M, and Bond, D S}
abstractNote = {Gamma-ray emission from plasma-impurity reactions caused by minority ICRH accelerating fuel ions to MeV energies has been measured using the JET neutron profile monitor. A successful data analysis technique has been used to isolate the RF-induced gamma-ray emission that was detected, enabling profiles of gamma-ray emission to be obtained. The 2-d gamma-ray emission profiles show that virtually all the radiation originates from the low field side of the RF resonance layer, as expected from RF-induced pitch angle diffusion. The emission profiles indicate the presence of a small population of resonant {sup 3}He ions that possess orbits lying near the passing-trapped boundary. 6 refs., 4 figs.}
place = {France}
year = {1994}
month = {Jul}
}