EFFECT OF A BEAM OF LIGHT ON THE DISLOCATION STRUCTURE OF CRYSTALS,
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 15, 1969
- Accession Number
- AD0699119
Entities
People
- L. I. Mirkin
- N. F. Pilipetskii
- T. M. Averyanova
Organizations
- National Air and Space Intelligence Center