Direction-Selective Free Expansion of Laser-Plasmas from Planar Targets
Abstract
Direction-selective expansion of laser-plasmas from planar, slab targets of Al, Ni, Mo and Ta are reported. Angular distributions of the particles emitted from the targets, produced by a 130mJ-5nsec, NdLYAG laser, were obtained by means of a retarding potential analyzer and a quartz crystal. It was observed that the angular distribution of the particles was preferentially focussed towards the target normal with the increase in the focal spot size, atomic mass of the target material and the ionization state of the expanding particles, for a given value of the laser energy. Our experimental results confirm, for the first time, the Monte Carlo simulation results of the earlier workers, taking into account collision and recombination processes.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 20, 2003
- Accession Number
- ADP015033
Entities
People
- B. K. Sinha
- D. Müller
- K. P. Rohr
- S. N. Srivastava
Organizations
- University of Kaiserslautern