Published June 1989 | Version v1
Report Metadata-only

Simulation of soft x-ray emissivity during pellet-injection and h-mode in Jet

Creators

  • 1. Commission of the European Communities Abingdon, (UK). JET Joint Undertaking
  • 2. Max-Planck-Institut fuer Plasmaphysik Garching (Germany, F.R.)

Description

Spatial profiles of soft X-ray intensity (E approximately equal or greater than 1.75 KeV) are measured on JET. One vertical and one horizontal X-ray diode array (100 detectors total), are used. By means of tomographic reconstruction techniques spatial distributions of local X-ray emissivity are derived. Differences in the X-ray emissivity distributions are observed. X-ray distributions measured during limiter discharges have a gaussian shape. Extremely peaked profiles of X-ray emissivity are observed after pellet injection and flat or hollow emissivity profiles are observed during the H-mode of X-point discharges. Simulations of shape and absolute emissivity of the measured profiles are presented. They show that peaked or hollow emissivity profiles reflect similar changes in the density distributions of the different species

Part of:
Jet Joint Undertaking. Vol. 2

Additional details

Publishing Information

Imprint Title
Jet Joint Undertaking. Vol. 2
Imprint Pagination
648 p.
Journal Page Range
p. A36-A39.
Report number
EUR--12323

Conference

Title
15. European Conference on Controlled Fusion and Plasma Heating.
Dates
16-20 May 1988.
Place
Dubrovnik (Yugoslavia).

INIS

Country of Publication
European Commission (EC), Brussels (Belgium)
Country of Input or Organization
European Commission (EC), Brussels (Belgium)
INIS RN
22010836
Subject category
S70: PLASMA PHYSICS AND FUSION TECHNOLOGY; S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
COMPUTERIZED SIMULATION; EMISSIVITY; FUEL PELLETS; H-MODE PLASMA CONFINEMENT; JET TOKAMAK; PELLET INJECTION; PLASMA DENSITY; PLASMA DIAGNOSTICS; PLASMA SIMULATION; SOFT X RADIATION; X-RAY SPECTRA
Descriptors DEC
CLOSED PLASMA DEVICES; CONFINEMENT; ELECTROMAGNETIC RADIATION; IONIZING RADIATIONS; OPTICAL PROPERTIES; PHYSICAL PROPERTIES; PLASMA CONFINEMENT; RADIATIONS; SIMULATION; SPECTRA; SURFACE PROPERTIES; THERMONUCLEAR DEVICES; TOKAMAK DEVICES; X RADIATION

Optional Information

Secondary number(s)
EUR-JET-PR--6.