RSMR: Rayleigh Scattering of Moessbauer Radiation

What does RSMR mean? The above is one of RSMR meanings. It may have other definitions. Please refer to the end of this passage.

RSMR: Rayleigh Scattering of Moessbauer Radiation

Definition in English: Rayleigh Scattering of Moessbauer Radiation