Laser initiation of secondary explosives: Renlund paper No. 115
Several experiments were performed to investigate the effects of explosive material parameters on energy thresholds for direct laser initiation of secondary explosives. Laser energy requirements for initiation of pentaerythritol tetranitrate (PETN) were decreased for small particle size powder and low density pressings. Promptness of detonation, however, was aided by higher densities. Initiation of PETN was achieved at energies at or below 10 mJ (power densities /approximately/0.2 GW cm/sup /minus/2/) at laser wavelengths of 1.06 /mu/m, 532 nm and 355 nm and strong confinement of the explosive sample assisted build-up to detonation. At 355 and 308 nm PETN could be initiated by irradiation on the bare explosive surface. Hexahydro-1,3,5-trinitro-s-triazine (RDX) was initiated at 308 nm but not at 1.06 /mu/m. Hexanitrostibene (HNS) by direct irradiation at any of these wavelengths was successful. The results suggest that if sufficient energy is deposited, a fast deflagration or convective burn is achieved and that this grows to detonation via a conventional deflagration-to-detonation transition (DDT). 14 refs., 6 figs., 2 tabs.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5843496
- Report Number(s):
- SAND-88-2465C; CONF-890926-2; ON: DE89010229
- Resource Relation:
- Conference: 9. international symposium on detonation, Portland, OR, USA, Sep 1989; Other Information: Paper copy only, copy does not permit microfiche production
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
PETN
IRRADIATION
CONVECTION
DESIGN
DETONATIONS
LASER RADIATION
POWDERS
TESTING
CHEMICAL EXPLOSIVES
ELECTROMAGNETIC RADIATION
ENERGY TRANSFER
ESTERS
EXPLOSIVES
HEAT TRANSFER
MASS TRANSFER
NITRATES
NITRIC ACID ESTERS
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
RADIATIONS
450100* - Military Technology
Weaponry
& National Defense- Chemical Explosions & Explosives
360605 - Materials- Radiation Effects