TY - JOUR
T1 - Development of 166Er Mössbauer spectroscopy in KURNS
AU - Nakamura, Shin
AU - Yokota, Hiroko
AU - Kitao, Shinji
AU - Kobayashi, Yasuhiro
AU - Saito, Makina
AU - Masuda, Ryo
AU - Seto, Makoto
N1 - Funding Information:
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).
Publisher Copyright:
© 2019, Springer Nature Switzerland AG.
PY - 2019/12/1
Y1 - 2019/12/1
N2 - 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.
AB - 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.
KW - Er Mössbauer spectroscopy
KW - ErO
KW - ErFeO
KW - ErMnO
KW - Quadrupole Hamiltonian
KW - Quadrupole interaction
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U2 - 10.1007/s10751-019-1623-6
DO - 10.1007/s10751-019-1623-6
M3 - Article
AN - SCOPUS:85083545530
SN - 0304-3843
VL - 240
JO - Hyperfine Interactions
JF - Hyperfine Interactions
IS - 1
M1 - 75
ER -