A miniaturized piezoelectric Mössbauer spectrometer with feedback control

P Guzman; C M Quine; S H Lohaus; L Schul; R Toda; V J Scott; B Fultz

doi:10.1063/5.0157651

A miniaturized piezoelectric Mössbauer spectrometer with feedback control

Rev Sci Instrum. 2023 Nov 1;94(11):115107. doi: 10.1063/5.0157651.

Authors

P Guzman¹, C M Quine¹, S H Lohaus¹, L Schul¹, R Toda², V J Scott², B Fultz¹

Affiliations

¹ California Institute of Technology, Pasadena, California 91125, USA.
² Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California 91108, USA.

PMID: 37947501
DOI: 10.1063/5.0157651

Abstract

A Mössbauer spectrometer was built and evaluated using an amplified piezoelectric actuator under feedback control for the Doppler velocity drive. The actuator was driven with a quadratic displacement waveform, giving a linear velocity profile. The optimization of the piezoelectric Doppler drive under feedback control was performed with measurements from a laser Doppler vibrometer. 57Fe Mössbauer spectra of α-iron in transmission geometry show minimal peak distortions. The performance of this piezoelectric Doppler drive makes Mössbauer spectrometry possible in applications requiring small size, mass, and low cost.