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Hyperfine Interactions

, 240:75 | Cite as

Development of 166Er Mössbauer spectroscopy in KURNS

  • Shin NakamuraEmail author
  • Hiroko Yokota
  • Shinji Kitao
  • Yasuhiro Kobayashi
  • Makina Saito
  • Ryo Masuda
  • Makoto Seto
Article
  • 15 Downloads
Part of the following topical collections:
  1. Proceedings of the 5th Mediterranean Conference on the Applications of the Mössbauer Effect (MECAME 2019) and 41st Workshop of the French-speaking Group of Mössbauer Spectroscopy (GFSM 2019), Montpellier, France, 19-23 May 2019

Abstract

We have newly developed 166Er Mössbauer spectroscopy in Institute for Integrated Radiation and Nuclear Science, Kyoto University (KURNS). As 166Ho radioactive source, HoAl2 was used. The compound was irradiated in the nuclear reactor (1 MW) for 5 min. The source has the intensity of 19 MBq and the half-life of 26.8 h. It is our privilege to conduct measurement immediately after the preparation of the radioactive source, since the spectroscopic equipment is situated just next to the reactor. The spectra of three typical Er oxides, Er2O3, ErFeO3, and ErMnO3 were measured at 40 K. On the basis of the calculated asymmetry parameter η and the evaluated sign of the quadrupole coupling constant e2qQ/2 from the structure parameters, we have successfully analyzed the spectra by using the quadrupole Hamiltonian assuming the transmission integral line shapes. The 166Er Mössbauer parameters, isomer shift IS, e2qQ/2, and line width W were obtained for the three specimens.

Keywords

166Er Mössbauer spectroscopy Quadrupole Hamiltonian Quadrupole interaction Er2O3 ErFeO3 ErMnO3 

Notes

Acknowledgments

This work has been carried out in part under the Visiting Researchers Program of the Institute for Integrated Radiation and Nuclear Science, Kyoto University (KURNS).

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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of Science and EngineeringTeikyo UniversityUtsunomiyaJapan
  2. 2.Department of PhysicsChiba UniversityChibaJapan
  3. 3.Institute for Integrated Radiation and Nuclear ScienceKyoto UniversityOsakaJapan

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