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Time Resolved Optical Spectroscopy to Examine Chemical Decomposition of Energetic Materials Under Static High Pressure and Pulsed Heating Conditions

Published online by Cambridge University Press:  10 February 2011

Thomas P. Russell ,
Theresa M. Allen  and
Y. M. Gupta
Thomas P. Russell*
Affiliation:
Naval Research Laboratory, Chemistry Division, Code 6110, Washington, D.C. 20375–5320
Theresa M. Allen
Affiliation:
Naval Research Laboratory, Chemistry Division, Code 6110, Washington, D.C. 20375–5320
Y. M. Gupta
Affiliation:
Washington State University, Shock Dynamics Center, Pullman WA, 9164-2814
*
♣Author to Whom Correspondence Should Be Sent
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Abstract

The study of the deflagration or detonation reactions of energetic materials is challenging due to the high pressure, high temperature, and time domain under which the reactions occur. Experimental measurements, are presented that demonstrate the ability to continuously monitor the global reaction times and reaction sequences associated with chemical reactions under these conditions. Time resolved absorption spectroscopy is used in conjunction with a high pressure gem anvil cell to probe the real-time chemical processes during pulsed-heating. Samples are initiated by a rapid thermal jump induced by absorption of a single laser pulse. Time resolved absorption spectroscopy of 3,6 trinitroethylamine tetrazine reaction is demonstrated by the real time measurement of the decrease in the ϕ-ϕ* absorption at 110 ns temporal resolution during laser heating at pressures up to 3.5 Gpa

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 418: Symposium GG – Decomposition, Combustion, and Detonation Chemistry of Energetic Materials , 1995 , 385
Copyright
Copyright © Materials Research Society 1996

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