Accession Number:

AD0699119

Title:

EFFECT OF A BEAM OF LIGHT ON THE DISLOCATION STRUCTURE OF CRYSTALS,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Report Date:

1969-08-15

Pagination or Media Count:

14.0

Abstract:

This is a sequel to earlier work by the authors where it was shown that a laser beam incident on a metallic surface produces a crater, the hardness around which is several times higher than the hardness that can be obtained in the same material by any of the known mechanical or heat-treatment hardening methods. As hardness is connected with the dislocation structure, the authors have investigated the changes produced by a laser beam in the dislocation structure of high-purity NaCl, on the surface of which the emergence of the dislocations can be readily displayed. Individual experiments were also carried out on single crystals of refractory tantalum metal. A ruby laser operating in the multiple-spike node was used. The laser and the apparatus used to measure its beam intensity are described. Author

Subject Categories:

  • Lasers and Masers
  • Crystallography

Distribution Statement:

APPROVED FOR PUBLIC RELEASE