Guzman P, Quine CM, Lohaus SH, Schul L, Toda R, Scott VJ, Fultz B. A miniaturized piezoelectric Mössbauer spectrometer with feedback control.
Rev Sci Instrum 2023;
94:115107. [PMID:
37947501 DOI:
10.1063/5.0157651]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 10/19/2023] [Indexed: 11/12/2023]
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.
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