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Title: Electronic excitation as a mode of heat dissipation in laser-driven cluster plasmas

Electrons streaming out of laser plasma are known for non-local heat transport and energy deposition by the ionization wave. At 100 eV electron temperature, since the electronic excitation cross section is comparable to that of ionization for Ar and CO{sub 2}, a non-local excitation wave akin to the ionization wave is envisaged where energy deposition in excitations forms a excited cluster sheath beyond the laser focus. Here, we show that nano-cluster systems have the right parameters to form such an exciton sheath and experimentally demonstrate this via charge transfer reactions.
Authors:
; ; ;  [1]
  1. Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai-5 (India)
Publication Date:
OSTI Identifier:
22218310
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 12; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ARGON; CARBON DIOXIDE; COMPARATIVE EVALUATIONS; ELECTRON TEMPERATURE; ELECTRONS; ENERGY ABSORPTION; ENERGY LOSSES; EXCITATION; EXCITED STATES; HEAT TRANSFER; ION TEMPERATURE; IONIZATION; LASER-PRODUCED PLASMA; LASERS; PLASMA PRODUCTION; PLASMA SHEATH; THERMAL DIFFUSIVITY; THERMODYNAMICS