Accession Number : AD0748079

Title :   The Importance of Impurities in Solids to Microscopic Ignition,

Corporate Author : BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD

Personal Author(s) : Strenzwilk,Denis F. ; Yedinak,Peter D.

Report Date : AUG 1972

Pagination or Media Count : 69

Abstract : Explosive and propellent crystals are chemically reactive solids in which impurities are known to affect the sensitivity to detonation or combustion. When these materials are stored for a period of time reactions may take place which may less their effectiveness. The proper handling of these materials requires a knowledge of what stimuli will ignite, detonate, or damage them in order to attain the desired effect. The report uses microscopic models and principles to study the transfer of lattice vibrational energy into the first excited state of the vibrational mode of a molecule located in a perfect crystal, or next to a mass defect. Also considered is energy being absorbed by the defect molecule. The model is intended to explain energy transfer in molecular crystals which are of interest to the Army. (Author)

Descriptors :   (*IGNITION, CHEMICAL REACTIONS), (*EXPLOSIVES, IMPURITIES), DETONATIONS, SENSITIVITY, CRYSTAL DEFECTS, DEGRADATION, NUMERICAL ANALYSIS, QUANTUM THEORY

Subject Categories : Ammunition and Explosives
      Combustion and Ignition

Distribution Statement : APPROVED FOR PUBLIC RELEASE