scholarly journals Ultrafast spectroscopic studies of vibrational energy transfer in energetic materials

2020 ◽  
Author(s):  
Neil C. Cole-Filipiak ◽  
Michael Marquez ◽  
Robert Knepper ◽  
Robert Harmon ◽  
Deneille Wiese-Smith ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Energetic Materials ◽  
Vibrational Energy ◽  
Spectroscopic Studies ◽  
Vibrational Energy Transfer

Vibrational Energy Transfer in High Explosives: Nitromethane

1995 ◽  
Vol 418 ◽  
Author(s):  
Xiaoyu Hong ◽  
Jeffrey R. Hill ◽  
Dana D. Dlott
Keyword(s):  
Energy Transfer ◽  
Energetic Materials ◽  
Vibrational Energy ◽  
High Explosive ◽  
Vibrational Energy Transfer ◽  
Ambient Conditions ◽  
High Explosives ◽  
Time Resolved ◽  
Mid Infrared ◽  
Shock Initiation

AbstractTime 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 NO2 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.

Sign in / Sign up

Export Citation Format

Share Document