Stroboscopic detection of the Ta-181-Mossbauer resonance with synchrotron radiation

Stroboscopic detection of nuclear forward scattered synchrotron radiation is used to detect the high-resolution 6.2 keV Mossbauer resonance of Ta-181 in tantalum metal. It is shown that synchrotron timing modes with a bunch interval ideal for Fe-57 (typically around 150 ns) are perfectly suited for the investigation of systems with a much larger decay time. (c) 2006 Elsevier B.V. All rights reserved

Slowing Down of Gamma Photons

SCOPUS: re.jinfo:eu-repo/semantics/publishe

Principles of stroboscopic detection of nuclear forward-scattered synchrotron radiation

The basic principles of stroboscopic detection of nuclear resonant forward-scattered synchrotron radiation are discussed. It is explained how the experiment can be configured in such a way that energy-resolved spectra with a straightforward interpretation are obtained. The theory is supported by a set of experimental spectra on the single-line compound potassium ferrocyanide trihydrate. Further, it is shown that a stroboscopic measurement is equivalent to an interferometer experiment. Finally, a comparison of stroboscopic detection and other Mössbauer techniques is given.SCOPUS: ar.jSCOPUS: ar.jinfo:eu-repo/semantics/publishe

Induced transparency for gamma radiation via nuclear level mixing

A significant reduction of absorption of single gamma photons has been observed using the Mössbauer spectra of 57Fe in a FeCO3 crystal. The absorption deficit can be ascribed to partially destructive interference for absorption because of two indistinguishable absorption paths. The necessary coherence is created by means of level mixing produced by a suitable combination of a magnetic dipole and electric quadrupole interaction.SCOPUS: cp.jinfo:eu-repo/semantics/publishe

Principles of stroboscopic detection of nuclear forward-scattered synchrotron radiation

The basic principles of stroboscopic detection of nuclear resonant forward-scattered synchrotron radiation are discussed. It is explained how the experiment can be configured in such a way that energy-resolved spectra with a straightforward interpretation are obtained. The theory is supported by a set of experimental spectra on the single-line compound potassium ferrocyanide trihydrate. Further, it is shown that a stroboscopic measurement is equivalent to an interferometer experiment. Finally, a comparison of stroboscopic detection and other Mossbauer techniques is given

Isomer shift determination in Eu compounds using stroboscopic detection of synchrotron radiation

The first application of stroboscopic detection of nuclear resonant scattering with synchrotron radiation on Eu-151 is reported. It is shown that stroboscopic detection is a useful technique for the determination of isomer shifts and this is confirmed by a measurement of the isomer shift of Eu-151 in EuPd2Si2 at pressures ranging from ambient pressure to 5 GPa. The results are compared with previous measurements