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X‐Ray Compton Scattering Study of Liquid Sodium at Elevated Temperatures
Author(s) -
Matsuda Kazuhiro,
Kimura Koji,
Hagiya Toru,
Kajihara Yukio,
Inui Masanori,
Hiraoka Nozomu,
Tamura Kozaburo,
Sakurai Yoshiharu
Publication year - 2020
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.202000187
Subject(s) - compton scattering , electron , synchrotron radiation , valence (chemistry) , scattering , atomic physics , x ray , kinetic energy , valence electron , synchrotron , materials science , electron density , chemistry , nuclear physics , physics , optics , organic chemistry , quantum mechanics
X‐ray Compton scattering measurements using synchrotron radiation are carried out for liquid sodium (Na) from 473 K up to 1273 K. Utilizing the liquid state allows us to realize a continuous density reduction by controlling temperature and pressure. Valence Compton profiles (CPs) clearly exhibit thermodynamic state dependence as the temperature increases. Experimental CPs, CP differences, and electron kinetic energy are compared with those of the electron gas model. Combined with the analysis using the Fourier‐transformed CPs, the observed behaviors can be reasonably explained by the reduction in the electron density with volume expansion of the liquid.