Lamb-Mössbauer factor determination by resonant Mössbauer spectrometer

We describe an efficient method for the determination of the Lamb-Mössbauer factor using a resonant Mössbauer spectrometer. It is based on a synchronous movement of the source and the resonant detector while the absorber is static. Measurements in such an arrangement allow to determine not only the Lamb-Mössbauer factor but also the electronic absorption and hyperfine parameters. The method is demonstrated on the measurement of α-iron absorber, where the Lamb-Mössbauer factor was determined to be 0.799±0.003.