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

Journal Article · Thu Aug 15 00:00:00 EDT 2013 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.4818992· OSTI ID:22220657

Kumar, Ajai; Sivakumaran, V.; Ganesh, R.; Joshi, H. C. ^[1]; Ashwin, J. ^[2]

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1. Institute for Plasma Research, Bhat, Gandhinagar-382428 (India)
2. Weizmann Institute of Science, Rehovot - 76100 (Israel)

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.

• OSTI ID: 22220657
• Journal Information: Physics of Plasmas, Vol. 20, Issue 8; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

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