DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click HERE
to register or log in.
ELECTRICAL EFFECTS OF SHOCK WAVES: CONDUCTIVITY IN CSI, KI, AND NACL
STANFORD RESEARCH INST MENLO PARK CA
Pagination or Media Count:
The electrical resistivities of single crystal NaCl, KI, and CsI were measured at several shock pressures in the range from 120 to 300 kbar. The resistivity of NaCl remained 9000 omega-cm at 225 kbar. One shot in which the specimen was preheated to 480C and shocked to 244 kbar gave an averaged resistivity of 470 omega-cm. The resistivity of KI decreased to a value between 2 and 9 omega-cm at 241 kbar there is considerable scatter in the data below 190 kbar. Resistivity measurements on CsI were performed parallel and perpendicular to the direction of shock propagation the resistivity decreased to 2 omega-cm at 277 kbar in the first case and to approx. 0.2 omega-cm in the letter. The data suggest a dependence of the conductivity on crystallographic direction. The data are consistent neither with electronic conduction caused by a decrease in the band gap due to shock compression of the lattice nor with ionic conduction caused by melting which may occur behind the shock front.
APPROVED FOR PUBLIC RELEASE