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- Title
Advances in constant-velocity Mössbauer instrumentation.
- Authors
Veiga, A.; Martínez, N.; Zélis, P. Mendoza; Pasquevich, G. A.; Sánchez, F. H.
- Abstract
A prototype of a programmable constant-velocity scaler is presented. This instrument allows the acquisition of partial Mössbauer spectra in selected energy regions using standard drivers and transducers. It can be fully operated by a remote application, thus data acquisition can be automated. The instrument consists of a programmable counter and a constant-velocity reference. The reference waveform generator is amplitude modulated with 13-bit resolution, and is programmable in a wide range of frequencies and waveforms in order to optimize the performance of the transducer. The counter is compatible with most standard SCA, and is configured as a rate-meter that provides counts per selectable time slice at the programmed velocity. As a demonstration of the instrument applications, a partial Mössbauer spectrum of a natural iron foil was taken. Only positive energies were studied in 512 channels, accumulating 20 s per channel. A line width of 0.20 mm/s was achieved, performing with an efficiency of 80%.
- Subjects
SERVOAMPLIFIERS; MOSSBAUER spectroscopy; SPECTROMETER calibration; TRANSDUCER calibration; MULTIPLE chemical sensitivity
- Publication
Hyperfine Interactions, 2006, Vol 167, Issue 1-3, p905
- ISSN
0304-3843
- Publication type
Article
- DOI
10.1007/s10751-006-9377-3