Vibrational and rotational relaxation of arsine in the solid state

摘要

Infrared spectra of AsH3and AsD3, both neat and as point defects in Phase II, have been Fourier transformed to provide vibrationalndash;relaxation and rotationalndash;reorientation correlation functions. Kuborsquo;s theory of line shape is used to show that, as the 32hyphen;K phase transition is approached from above, the system approaches the slowhyphen;modulation limit. It is concluded that rotational diffusion in arsine persists down to 32 K.