Two-Dimensional Effects in Laser-Solid Simulation Studies.
Abstract
The objective of the program is to study the two-dimensional wave motions induced in a target by high-power laser radiation. For these studies the target is an axisymmetric, supersonic free-jet of hydrogen gas which is laser irradiated on axis. The transparency of the target permits luminosity and schlieren streak photography of the forward-facing waves that propagate into the high-pressure plenum. Measurements of the axial and lateral luminous plasma frowth and of the axial shock wave growth have been obtained for hydrogen gas targets over a range of plenum pressures and laser powers. It has been found that the axial luminous-front growth can be predicted by a deflagration model; in this model the velocity scales with absorbed power divided by gas reservoir pressure to the one-third power. The shock-wave velocity along the axis of symmetry also appears to scale with this parameter. An explanation of this result has been proposed. Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1972
- Accession Number
- AD0746681
Entities
People
- H. M. Thompson
- J. W. Daiber
- R. G. Rehm
Organizations
- Calspan