| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2020: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2019: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2018: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
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| Outline of Final Research Achievements |
To gain microscopic understanding for valence electronic state in liquid metals, we carried out the investigation for observing the electron dynamical structure factor, which is the momentum-frequency spectrum of the space-time correlation of the electron density fluctuations. By using synchrotron-based inelastic X-ray scattering technique, we succeeded to measure dynamical structure factors of valence electrons in liquid lithium and sodium over a wide range of momentum-energy transfers. From obtained dynamical structure factors, we derived a wave-number dependent static density response function of valence electrons in the liquid. Furthermore, we used dynamical density response functions to clarify the real space-time screening dynamics of valence electrons induced by a point charge disturbance.
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