Wide and small angle X-ray scattering measurements for expanded fluid Se accompanying the semiconductor-metal and metal-nonmetal transition

Inui Masanori

Sato K.

Mifune K.

Matsuda K.

Ishikawa D.

Tamura K.

Journal of Non-Crystalline Solids

Wide and small angle X-ray scattering measurements for supercritical fluid Se in the wide density region from liquid to dense vapor have been carried out using synchrotron radiation at SPring-8. The large background for the small angle spectra with the previous high-pressure vessel was much suppressed using a new vessel with a large diamond window. We carefully measured wide angle X-ray scattering near the critical density and obtained the structure factor, S(k), and the pair distribution functions, g(r). By small angle X-ray scattering measurements, we succeeded in observing a medium-range fluctuation in the semiconductor-metal transition in expanded fluid Se

liquid alloys and liquid metals

synchrotron radiation

X-ray diffraction

liquid crystals and molecular liquids

microstructure

structure

X-rays

Physics [ 420 ]

eng

Elsevier Science BV

Copyright(c) 2007 Elsevier Science BV

[ISSN] 0022-3093

[DOI] 10.1016/j.jnoncrysol.2007.05.086

[NCID] AA00703560

[DOI] http://dx.doi.org/10.1016/j.jnoncrysol.2007.05.086 isVersionOf