Accession Number:

ADA043647

Title:

A Lattice Dynamical Model of Thermal Initiation of Solid Explosives.

Descriptive Note:

Technical rept.,

Corporate Author:

ARMY ARMAMENT RESEARCH AND DEVELOPMENT COMMAND DOVER N J LARGE CALIBER WEAPON SYSTEMS LAB

Personal Author(s):

Report Date:

1977-08-01

Pagination or Media Count:

22.0

Abstract:

It is proposed that the thermal initiation of a solid explosive results from a chemical reaction between the ions of the lattice induced by large amplitude vibrations of the ions at the initiation temperature. Such vibrations would allow the ions of the lattice to approach each other enabling chemical reaction to occur. The large amplitude vibrations are possible in a solid in which lattice potentials are softer and more anharmonic. Reaction rates for this mechanism are formulated in terms of the force constants of the normal modes of vibration for the case of a simple cubic solid. Comparison of available lattice dynamical data, such as neutron diffraction and Raman studies for the isostructural pair KN3 and TLN3, the latter of which is unstable, support the possibility of softer and more anharmonic potentials in explosive solids. Author

Subject Categories:

  • Physical Chemistry
  • Ammunition and Explosives
  • Explosions

Distribution Statement:

APPROVED FOR PUBLIC RELEASE