| Original Articles |
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Rhodium Mössbauer Effect Generated by Bremsstrahlung Excitation |
| CHENG Yao1,2;XIA Bing1;LIU Yi-Nong1;JIN Qing-Xiu1 |
| 1Department of Engineering Physics, Tsinghua University, Beijing 100084
2Key Laboratory of Atomic and Molecular Nanosciences, Tsinghua University, Beijing 100084 |
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| Cite this article: |
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CHENG Yao, XIA Bing, LIU Yi-Nong et al 2005 Chin. Phys. Lett. 22 2530-2533 |
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Abstract A method for effectively generating long-lived Mössbauer photons and methods for proving the associated Mössbauer effects are reported. For the first time, we observed resonant propagation and resonant absorption of 40-keV Mössbauer photons emitted from 103Rh through (γ,γ’) process excited by bremsstrahlung. This is a new efficient way to generate long-lived isomer (>1ms) for Mössbauer spectroscopy with sufficient brilliance. An abnormally large ratio of resonant absorption between horizontal and vertical directions indicates horizontal trapping of Mössbauer photons and anisotropic Mössbauer emission, which can be attributed to gravitational effect on the 103Rh Mössbauer isomer with extremely narrow 10-19eV linewidth.
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| Keywords:
33.45.+x
76.80.+y
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Published: 01 October 2005
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| PACS: |
33.45.+x
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(M?ssbauer spectra)
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76.80.+y
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(M?ssbauer effect; other γ-ray spectroscopy)
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