Theoretical study of the microscopic Doppler effect for energetic material

ABSTRACT

We develop a physical model to describe the microscopic Doppler effect of phonon states in energetic material and use it to investigate the phonon–strain scattering behaviour of β-octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine. The required elastic constants and force constants are obtained by first-principles calculations. By using the phonon–strain scattering probability, a set of dissipation parameters are calculated, such as the viscosity coefficient, damping rate of elastic wave, and heat dissipation across shock wave front. It is interesting that the Doppler effect could describe the microscopic phonon scattering mechanism reasonably.

KEYWORDS:

• Doppler effect
• phonon–strain scattering
• energy dissipation
• viscosity

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work is supported by the National Natural Science Foundation of China [grant numbers 11474028, 11572053 and U1730244], Science Challenge Project [grant number TZ2016001] and Foundation of LCP.