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Ultrahigh-pressure measurement in the multimegabar range by energy-domain synchrotron radiation $$^{57}$$Fe-M$"o$ssbauer spectroscopy using focused X-rays

Mitsui, Takaya; Seto, Makoto; Hirao, Naohisa*; Oishi, Yasuo*; Kobayashi, Yasuhiro*; Higashitaniguchi, Satoshi*; Masuda, Ryo*

Energy-domain synchrotron radiation M$"o$ssbauer spectroscopy was performed by a single-line M$"o$ssbauer filtering technique and focusing X-ray optics. Pure nuclear Bragg reflection from a heated $$^{57}$$FeBO$$_{3}$$ single crystal was used for a neV order bandwidth ultrahigh energy resolution X-ray analyzer. As an example of small target research, the M$"o$ssbauer transmission spectrum of polycrystalline iron metal was observed using a diamond anvil cell at multimegabar pressures (252 GPa) for the first time.

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Category:Physics, Applied

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