Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
ssbauer radiation using synchrotron radiationMasuda, Ryo; Mitsui, Takaya; Kobayashi, Yasuhiro*; Higashitaniguchi, Satoshi*; Seto, Makoto
Japanese Journal of Applied Physics, 48(12), p.120221_1 - 120221_3, 2009/12
Times Cited Count：9 Percentile：35.54(Physics, Applied)A neV-resolution spectrometer using 14.4 keV synchrotron-based 
Fe Mssbauer radiation has been developed to observe the quasi-elastic scattering by condensed matter. It consists of a Fe
O
nuclear resonant Bragg monochromator and a Fe stainless steel nuclear analyzer. As a feasibility study, the quasi-elastic scattering by supercooled glycerol near its melting point has been observed. The instrumental function of the spectrometer was 42.2 neV. The energy broadening of 11 neV due to the quasi-elastic scattering was observed.
ssbauer spectroscopySeto, Makoto; Masuda, Ryo; Higashitaniguchi, Satoshi*; Kitao, Shinji*; Kobayashi, Yasuhiro*; Inaba, Chika*; Mitsui, Takaya; Yoda, Yoshitaka*
Physical Review Letters, 102(21), p.217602_1 - 217602_4, 2009/05
Times Cited Count：60 Percentile：88.03(Physics, Multidisciplinary)We have developed a new method that yields Mssbauer absorption spectra using synchrotron radiation (SR); this method is applicable for almost all Mssbauer nuclides including those that cannot be measured by previous methods using radioisotope (RI) sources. The Mssbauer spectrum of the 68.752 keV excited state of 
Ge, which cannot be measured using a RI source, was measured using SR. Our results show that this method can be used to perform advanced Mssbauer spectroscopy measurements owing to the excellent features of SR.
Fe Mssbauer radiationMasuda, Ryo; Mitsui, Takaya; Kitao, Shinji*; Higashitaniguchi, Satoshi*; Yoda, Yoshitaka*; Seto, Makoto
Japanese Journal of Applied Physics, 47(10), p.8087 - 8090, 2008/10
Times Cited Count：14 Percentile：48.20(Physics, Applied)A synchrotron-radiation-based neV-resolution spectrometer has been developed using single-line pure nuclear Bragg reflection. The developed optical system consists of two components: a FeBO
single crystal near the N
el temperature for producing Fe Mssbauer radiation from synchrotron radiation, and a single-line Mssbauer absorber (Fe-enriched stainless steel foil) for analyzing the energy distribution. As a feasibility study, we have performed the measurement of the Mssbauer radiation diffracted by a Si crystal under ultrasound vibration with the optical system and have successfully observed the neV-range energy modulation due to the ultrasound vibration.
Fe-Mssbauer spectroscopy using focused X-raysMitsui, Takaya; Seto, Makoto; Hirao, Naohisa*; Oishi, Yasuo*; Kobayashi, Yasuhiro*; Higashitaniguchi, Satoshi*; Masuda, Ryo*
Japanese Journal of Applied Physics, Part 2, 46(16), p.L382 - L384, 2007/04
Times Cited Count：12 Percentile：43.55(Physics, Applied)Energy-domain synchrotron radiation Mssbauer spectroscopy was performed by a single-line Mssbauer filtering technique and focusing X-ray optics. Pure nuclear Bragg reflection from a heated FeBO single crystal was used for a neV order bandwidth ultrahigh energy resolution X-ray analyzer. As an example of small target research, the Mssbauer transmission spectrum of polycrystalline iron metal was observed using a diamond anvil cell at multimegabar pressures (252 GPa) for the first time.
FeBO single crystalMitsui, Takaya; Seto, Makoto; Kikuta, Seishi*; Hirao, Naohisa*; Oishi, Yasuo*; Takei, Fumihiko*; Kobayashi, Yasuhiro*; Kitao, Shinji*; Higashitaniguchi, Satoshi*; Masuda, Ryo*
Japanese Journal of Applied Physics, Part 1, 46(2), p.821 - 825, 2007/02
Times Cited Count：34 Percentile：74.24(Physics, Applied)Ultrahigh monochromatic 14.4 keV X-rays with a narrow bandwidth of 15.4 neV were generated successfully with a high counting rate of 12,000 counts/s at the undulator beamline (BL11XU) of SPring-8. It was achieved by combining an intense X-ray from the third generation synchrotron radiation facility SPring-8 and pure nuclear Bragg scattering of a very highquality FeBO perfect single crystal at the Nel temperature. We describe the detailed study of the beam characteristics and some performance test experiments of energy-domain synchrotron radiation Mssbauer spectroscopy, including a highpressure experiment using a diamond anvil cel.
Imai, Yasuhiko*; Yoda, Yoshitaka*; Kitao, Shinji*; Masuda, Ryo; Higashitaniguchi, Satoshi*; Inaba, Chika*; Seto, Makoto
Advances in X-ray/EUV Optics and Components II (Proceedings of SPIE Vol.6705), p.670512_1 - 670512_7, 2007/00
We have developed a high-resolution monochromator (HRM) for the measurement of nuclear resonant scattering of synchrotron radiation by 
Te at 35.49 keV using the backscattering of sapphire (9 1 -10 68). The relative energy resolution of 
is achieved, that is 7.5 meV in energy bandwidth. A new HRM has been desired at this energy region because of the low efficiency of usual Si HRMs. This HRM opens studies on element-specific dynamics and electronic state of substances containing Te.
Masuda, Ryo*; Higashitaniguchi, Satoshi*; Kitao, Shinji*; Kobayashi, Yasuhiro*; Seto, Makoto*; Mitsui, Takaya; Yoda, Yoshitaka*; Haruki, Rie*; Kishimoto, Shunji*
Journal of the Physical Society of Japan, 75(9), p.094716_1 - 094716_4, 2006/09
Times Cited Count：2 Percentile：19.07(Physics, Multidisciplinary)no abstracts in English
Mitsui, Takaya; Seto, Makoto; Higashitaniguchi, Satoshi*
no journal, ,
no abstracts in English
Masuda, Ryo; Mitsui, Takaya; Kitao, Shinji*; Higashitaniguchi, Satoshi*; Yoda, Yoshitaka*; Seto, Makoto
no journal, ,
no abstracts in English
