Determination of quasidiffusive phonon propagation in BaF2 using pulse shape analysis and possible implications for particle detection

We have shown that for quasidiffusive phonon propagation in an isotropic crystal the diffusion coefficient D = KL8/9, where K is a material constant and L is the distance between the phonon source and point of detection. We have demonstrated this is the case for BaF2 bombarded by alpha-particles. This implies that pulse shape analysis may provide a mechanism to achieve position sensitivity in phonon mediated detectors