Synchrotron Mössbauer spectroscopy using high-speed shutters

• Published in: Journal of synchrotron radiation Vol. 18; no. 2; pp. 183 - 188
• Main Authors: Toellner, T. S., Alp, E. E., Graber, T., Henning, R. W., Shastri, S. D., Shenoy, G., Sturhahn, W.
• Format: Journal Article
• Language: English
• Published: 5 Abbey Square, Chester, Cheshire CH1 2HU, England International Union of Crystallography 01.03.2011
• Subjects: BRIGHTNESS; ENERGY RESOLUTION; MOESSBAUER EFFECT; MONOCHROMATORS; Mössbauer spectroscopy; nuclear resonant scattering; PHOTONS; PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Research Papers; SCATTERING; SHUTTERS; SPECTROSCOPY; Spectroscopy, Mossbauer - instrumentation; Spectroscopy, Mossbauer - methods; SYNCHROTRON RADIATION; SYNCHROTRONS; X-ray shutter; X-Rays
• ISSN: 1600-5775; 0909-0495; 1600-5775
• DOI: 10.1107/S090904951003863X

A new method of performing Mössbauer spectroscopy with synchrotron radiation is demonstrated that involves using a high‐speed periodic shutter near the focal spot of a microfocused X‐ray beam. This fast microshuttering technique operates without a high‐resolution monochromator and has the potential to produce much higher signal rates. It also offers orders of magnitude more suppression of unwanted electronic charge scattering. Measurement results are shown that prove the principle of the method and improvements are discussed to deliver a very pure beam of Mössbauer photons (E/ΔE≃ 1012) with previously unavailable spectral brightness. Such a source will allow both Mössbauer spectroscopy in the energy domain with the many advantageous characteristics of synchrotron radiation and new opportunities for measurements using X‐rays with ultra‐high energy resolution.