Development of laser induced fluorescence diagnostic for measuring the parameters of plasma containing rare gas species

Laser induced fluorescence (LIF) technique development activity for measurement of plasma parameters in ITER divertor plasma is described. Helium density is the task of priority, but Doppler measurement of ion (atom) temperatures is also the aim of the program. The concept of ITER scenarios includes...

Full description

Saved in:
Bibliographic Details
Published in:Review of scientific instruments 2010-10, Vol.81 (10), p.10D712-10D712
Main Authors: Gorbunov, A V, Molodtsov, N A, Moskalenko, I V, Shcheglov, D A
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ARGON
DOPPLER EFFECT
ELECTRON DENSITY
FLUORESCENCE
HELIUM
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ION TEMPERATURE
ITER TOKAMAK
KRYPTON
LASERS
MICROWAVE RADIATION
NEON
PLASMA
PLASMA DIAGNOSTICS
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Laser induced fluorescence (LIF) technique development activity for measurement of plasma parameters in ITER divertor plasma is described. Helium density is the task of priority, but Doppler measurement of ion (atom) temperatures is also the aim of the program. The concept of ITER scenarios includes injection of "extrinsic" impurities (Ne, Ar, and Kr). It is possible to use the species as tracing elements for measurement of T(i), T(a). The program included modeling experiments on PNX-U (a multicusp trap with microwave argon plasma). Helium was added by puffing into discharge. Temperatures T(i)(Ar(1+)) and T(a)(He(0)) have been measured by scanning laser line across absorption line of species. Summarizing of fluorescence signals provided input data for estimation of Ar(1+) and He(0) densities via interpretative collisional-radiative models. Besides, the collisional-radiative model has been used for estimation of electron density using the ratio of fluorescence signals at 388.9 and 706.5 nm helium lines.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.3475799