Experimental study of spontaneous electric field generated by a laser plasma
作者:
A. V. Kabashin,
P. I. Nikitin,
W. Marine,
M. Sentis,
期刊:
Applied Physics Letters
(AIP Available online 1998)
卷期:
Volume 73,
issue 1
页码: 25-27
ISSN:0003-6951
年代: 1998
DOI:10.1063/1.121711
出版商: AIP
数据来源: AIP
摘要:
We report investigations of a space-time structure of the electric field of laser plasma from a solid target. An ArF excimer laser with an intensity ofI≅108 W/cm2was used to produce the plasma on various targets placed in air at atmospheric pressure. A strong difference in both the amplitude (by more than 1–2 orders of magnitude) and the structure of the electric field for conductive and dielectric targets has been observed. The field distribution for a conductive target was found to correspond to a dipole configuration of charges in the laser plasma, while for the dielectric target a quadrupole configuration was revealed. Possible explanations and applications of the observed effect are discussed. ©1998 American Institute of Physics.
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