Accession Number:

AD0654524

Title:

MECHANISMS OF LASER-SURFACE INTERACTIONS

Descriptive Note:

Final rept.

Corporate Author:

HONEYWELL INC HOPKINS MN CORPORATE RESEARCH CENTER

Report Date:

1967-05-01

Pagination or Media Count:

94.0

Abstract:

This report describes experimental and theoretical investigations of the particle emission produced in the laser-surface interaction. Preliminary measurements on the angular distribution of ions emitted from a tungsten target at power levels around 14 MW per sq. cm. indicate anisotropy of the emission, with a strong enhancement in directions near the normal to the target. Ion and neutral molecule emission from laser-irradiated sodium targets are described. Calculations on the free expansion of the laser-produced blow off material, which include the asymptotic velocity of the expansion, yield pulse shapes similar to those observed experimentally if a high initial temperature is assumed. The magnitudes and time histories of shock waves produced in the target by absorption of the laser radiation have been calculated.

Subject Categories:

  • Physical Chemistry
  • Plasma Physics and Magnetohydrodynamics
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE