Accession Number : AD0713599

Title :   THE SHOCK HUGONIOT OF SINGLE-CRYSTAL SODIUM CHLORIDE.

Descriptive Note : Memorandum rept.,

Corporate Author : BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD

Personal Author(s) : Hauver,George E. ; Melani,Angelo

Report Date : AUG 1970

Pagination or Media Count : 24

Abstract : Shock Hugoniot data for single-crystal sodium chloride have been obtained within the pressure range from 90 to 700 kbar. The data in the shock velocity - particle velocity plane do not clearly define the onset of the transition from face-centered-cubic (NaCl) to body-centered (CsCl structure, but show evidence of it by a displacement which is first detected between 260 and 280 kbar for the (100) orientation and between 220 and 230 kbar for the (111) orientation. Lateral relaxation measurements on (111) specimens provide evidence of the transition at 208 kbar. After the displacement which occurs near the onset of the transition, data in the shock velocity - particle velocity plane follow a linear relation up to 460 kbar, where the Hugoniot stiffens to enter a third region which extends linearly up to 700 kbar (and probably to higher pressures). It is tentatively suggested that the third region from 460 to 700 kbar represents the body-centered structure, and that the second region may be a manifestation of the experimental techniques. The data are compared with those of other investigators. (Author)

Descriptors :   (*SODIUM CHLORIDE, SHOCK(MECHANICS)), SINGLE CRYSTALS, SHOCK WAVES, TEST METHODS

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE