An alloptical, noncontact experimental approach was developed and used for the determination of elastic constants of HE single crystals. In this approach, impulsive stimulated thermal scattering (ISTS) is used to obtain acoustic wave velocities along many different crystal directions. The ISTS method is particularly wellsuited for use with HE crystals. Using acoustic velocities from ISTS measurements, complete sets of secondorder elastic constants were determined for PETN, RDX, and β HMX single crystals. Overall our results are in good agreement with previous values determined using ultrasonic methods, but differ significantly from values obtained using Brillouin scattering. ISTS is now a welldeveloped method for determining the secondorder elastic constants of HE single crystals, including low symmetry crystals.
|Number of pages||5|
|State||Published - Dec 1 2010|
|Event||14th International Detonation Symposium, IDS 2010 - Coeur d'Alene, ID, United States|
Duration: Apr 11 2010 → Apr 16 2010
|Conference||14th International Detonation Symposium, IDS 2010|
|City||Coeur d'Alene, ID|
|Period||04/11/10 → 04/16/10|