Vibrational energy transfer in high explosives: Nitromethane

Conference · Mon Jul 01 00:00:00 EDT 1996

OSTI ID:248260

Hong, X; Hill, J R; Dlott, D D ^[1]

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1. Univ. of Illinois, Urbana, IL (United States). School of Chemical Sciences

Time resolved vibrational spectroscopy with picosecond tunable mid-infrared pulses is used to measure the rates and investigate the detailed mechanisms of multiphonon up-pumping and vibrational cooling in a condensed high explosive, nitromethane. Both processes occur on the 100 ps time scale under ambient conditions. The mechanisms involve sequential climbing or descending the ladder of molecular vibrations. Efficient intermolecular vibrational energy transfer from various molecules to the symmetric stretching excitation of NO{sub 2} is observed. The implications of these measurements for understanding shock initiation to detonation and the sensitivities of energetic materials to shock initiation are discussed briefly.

• OSTI ID: 248260
• Report Number(s): CONF-951155--; ISBN 1-55899-321-5
• Country of Publication: United States
• Language: English

Related Subjects

45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
COMBUSTION KINETICS
DETONATION WAVES
ENERGY TRANSFER
IMPACT SHOCK
NITROGEN DIOXIDE
NITROMETHANE
SENSITIVITY
TEST FACILITIES
VIBRATIONAL STATES