Nuclear Resonant Scattering of Synchrotron Radiation by Yb Nuclides

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We have observed nuclear resonant scattering of synchrotron radiation by ytterbium nuclides for the first time. The observed excited states were the second excited state of 171Yb and the first excited states of 172Yb, 174Yb, and 176Yb. The resonant energies and half-lives of these states were found to be $75.878\pm 0.007$ keV and $1.55\pm 0.12$ ns for the second excited state of 171Yb, $78.737\pm 0.004$ keV and $1.71\pm 0.13$ ns for the first excited state of 172Yb, $76.465\pm 0.006$ keV and $1.76\pm 0.04$ ns for the first excited state of 174Yb, and $82.154\pm 0.006$ keV and $1.82\pm 0.09$ ns for the first excited state of 176Yb. Nuclear resonant scattering of synchrotron radiation by ytterbium will become a new useful method for researches on materials containing ytterbium element.
2006-09-15