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Title: Specific features of microheterogeneous plasma produced by irradiation of a polymer aerogel target with an intense 500-ps-long laser pulse

The properties of microheterogeneous plasma produced by irradiation of a polymer aerogel target with an intense (10{sup 14} W/cm{sup 3}) short (0.5 ps) 1.064-μm laser pulse were studied. It is found that, even at plasma densities exceeding the critical density, a small fraction of the incident laser radiation penetrates through the plasma in which the processes of density and temperature equalization still take place. The intensification (as compared to plasmas produced from denser foams and solid films) of transport processes in such plasma along and across the laser beam can be caused by the initial microheterogeneity of the solid target. The replacement of a small (10% by mass) part of the polymer with copper nanoparticles leads to a nearly twofold increase in the intensity of the plasma X-ray emission.
Authors:
; ;  [1] ; ; ; ;  [2] ; ;  [3]
  1. Russian Academy of Sciences, Lebedev Physical Institute (Russian Federation)
  2. Bhabha Atomic Research Centre, High-Pressure and Synchrotron Radiation Physics Division (India)
  3. Russian Academy of Sciences, Zelinksy Institute of Organic Chemistry (Russian Federation)
Publication Date:
OSTI Identifier:
22216085
Resource Type:
Journal Article
Resource Relation:
Journal Name: Plasma Physics Reports; Journal Volume: 39; Journal Issue: 8; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COPPER; DENSITY; FOAMS; IRRADIATION; LASER RADIATION; LASERS; NANOSTRUCTURES; PARTICLES; PLASMA DENSITY; POLYMERS; PULSES; TRANSPORT THEORY; X RADIATION