Thumbnail
Access Restriction
Open

Author Krehl, P. ♦ Schwirzke, F. ♦ Cooper, A. W.
Sponsorship USDOE
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Publisher American Institute of Physics (AIP)
Language English
Subject Keyword PLASMA PHYSICS AND FUSION TECHNOLOGY ♦ LASER-PRODUCED PLASMA- PLASMA DENSITY ♦ ALUMINIUM ♦ ENERGY TRANSFER ♦ IMPACT SHOCK ♦ PULSES ♦ SHOCK WAVES ♦ STRESSES
Abstract The interaction of 20-nsec 300-MW pulses of 1.06-μm laser radiation with thick aluminum targets in vacuum has been studied. The time history of the target impulse has been measured with a Sandia quartz gauge. A time sequence of plasma density maps constructed from floating double-probe data has been used with measured expansion velocities to estimate the plasma momentum. The results show that the stress wave is predominantly produced by about 10% of the evaporated target material which is ionized and expands from the surface in the form of a hot plasma during and shortly after the laser pulse. The estimated momentum of the plasma and neutral emitted particles is 5.6 g cm/sec for a typical case compared with the measured target impulse of 6.1 g cm/sec.
ISSN 00218979
Educational Use Research
Learning Resource Type Article
Publisher Date 1975-01-01
Publisher Department Poulter Laboratory, Stanford Research Institute, Menlo Park, California 94025
Publisher Place United States
Journal Journal of Applied Physics
Volume Number 46
Issue Number 10
Organization Poulter Laboratory, Stanford Research Institute, Menlo Park, California 94025


Open content in new tab

   Open content in new tab