Evidence of localized heating in CO2-laser-produced plasmas
- 1 April 1976
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 47 (4) , 1318-1321
- https://doi.org/10.1063/1.322833
Abstract
Polyethylene foils and parylene disks have been irradiated by CO2 (λ∼10.6 μm) and Nd : YAG‐glass (λ∼1.06 μm) laser pulses focused to flux levels in the 1013‐ and 1014‐W/cm2 range. X‐ray pinhole photographs of the CO2‐laser‐produced plasmas exhibit intense localized emission regions whose characteristic dimensions are smaller than the nearly diffraction‐limited focal spot of the laser. Corresponding photographs of the glass‐laser‐produced plasmas show no evidence of localized emission. These experimental results are consistent with theoretical predictions for laser‐beam trapping and/or filamentation in laser‐produced plasmas.This publication has 11 references indexed in Scilit:
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