Ultrafast Laser Heating of RDX and Polyethylene

Report No. ARL-MR-839
Authors: Jennifer L. Gottfried; Frank C. De Lucia, Jr.
Date/Pages: February 2013; 32 pages
Abstract: As part of the Multiscale Response of Energetic Materials program, novel experimental methods for measuring the microscale thermal and mechanical behaviors of energetic materials are being developed; the goal of these experiments is to produce data that can be used to validate computational models currently under development for the program. In this report we present our progress with the development of two methods for determining the ultrafast thermal response of RDX and polyethylene to either the direct or indirect shock imparted by a femtosecond-laser pulse. Results for the decomposition behavior of RDX and polyethylene are presented, along with time-resolved temperature and electron density measurements. Our experiments have successfully produced data that can be used to validate dissipative particle dynamics simulations of these materials.
Distribution: Approved for public release
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Last Update / Reviewed: February 1, 2013