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Title: Diagnosing collisions of magnetized, high energy density plasma flows using a combination of collective Thomson scattering, Faraday rotation, and interferometry (invited)

A suite of laser based diagnostics is used to study interactions of magnetised, supersonic, radiatively cooled plasma flows produced using the Magpie pulse power generator (1.4 MA, 240 ns rise time). Collective optical Thomson scattering measures the time-resolved local flow velocity and temperature across 7–14 spatial positions. The scattering spectrum is recorded from multiple directions, allowing more accurate reconstruction of the flow velocity vectors. The areal electron density is measured using 2D interferometry; optimisation and analysis are discussed. The Faraday rotation diagnostic, operating at 1053 nm, measures the magnetic field distribution in the plasma. Measurements obtained simultaneously by these diagnostics are used to constrain analysis, increasing the accuracy of interpretation.
Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [1] ;  [2] ;  [3] ;  [4]
  1. Plasma Physics Group, Imperial College, London SW6 7LZ (United Kingdom)
  2. Sandia National Laboratory, Albuquerque, New Mexico 87185-1193 (United States)
  3. Department of Physics, University of Alberta, Edmonton, Alberta T6G 2J1 (Canada)
  4. Key Laboratory of Pulsed Power, Institute of Fluid Physics, CAE, Mianyang 621900 (China)
Publication Date:
OSTI Identifier:
22308954
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 85; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCURACY; COLLISIONS; ELECTRON DENSITY; ENERGY DENSITY; FARADAY EFFECT; FLOW RATE; INTERFEROMETRY; OPTIMIZATION; PLASMA; PLASMA DIAGNOSTICS; PULSE GENERATORS; PULSE RISE TIME; TEMPERATURE DEPENDENCE; THOMSON SCATTERING; TIME RESOLUTION