|Author||Krehl, P. ♦ Schwirzke, F. ♦ Cooper, A. W.|
|Source||United States Department of Energy Office of Scientific and Technical Information|
|Publisher||American Institute of Physics (AIP)|
|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.|
|Learning Resource Type||Article|
|Publisher Department||Poulter Laboratory, Stanford Research Institute, Menlo Park, California 94025|
|Publisher Place||United States|
|Journal||Journal of Applied Physics|
|Organization||Poulter Laboratory, Stanford Research Institute, Menlo Park, California 94025|
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