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Title: Dense strongly coupled plasma in double laser pulse ablation of lithium: Experiment and simulation

In a simple method of low power nano-second double pulsed laser ablation experiment in collinear geometry, formation of high density strongly coupled plasma is demonstrated. Using time-resolved measurements of the Stark broadened line width and line intensity ratio of the emission lines, the density and temperature of the plasma were estimated respectively. In this experiment, it is shown that ions are strongly coupled (ion-ion coupling parameter comes out to be >4). For comparison, both single and double pulsed laser ablations are presented. For the estimated experimental plasma parameters, first principle Langevin dynamics simulation corroborates the existence of a strongly coupled regime.
Authors:
; ; ;  [1] ;  [2]
  1. Institute for Plasma Research, Bhat, Gandhinagar-382428 (India)
  2. Weizmann Institute of Science, Rehovot - 76100 (Israel)
Publication Date:
OSTI Identifier:
22220657
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 8; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ABLATION; ELECTRON TEMPERATURE; ION TEMPERATURE; IONS; LASERS; LINE BROADENING; LINE WIDTHS; LITHIUM; MOLECULAR DYNAMICS METHOD; PLASMA DENSITY; PLASMA DIAGNOSTICS; PLASMA SIMULATION; PULSES; TIME RESOLUTION