Mössbauer Spectra in a Fluctuating Environment II. Randomly Varying Electric Field Gradients

摘要: We derive an expression for the M\"ossbauer line shape in presence of electric field gradient which jumps at random between $x$, $y$, and $z$ axes. This Hamiltonian represents idealized model effects on a nucleus Jahn-Teller distortions, jump diffusion vacancies, or electronic relaxation. A simplified calculation based positive negative values along axis is also given. In certain limiting circumstances two calculations give similar results: The consists single unsplit fast jumping, quadrupole doublet slow transitions. results agree with experiments Pipkorn Leider Chappert, Frankel, Blum, as interpreted by Ham.