SPring-8, the large synchrotron radiation facility

Date: 16:00-17：00, Jly 20, 2006

Place: HOUKOUKAN

Speaker: Yu FUKAI, Prof. Emeritus of Chuo University

Title: The physics of metal-Hydrogen system: Present and Future

Abstract: As a consequence of the M-H system being composed of constituents of widely different masses (M-atoms, H-atoms and electrons), its various properties show up in different energy and time scales. Here I start by surveying some dynamical properties  of the system classified according to their time scales, and thereby try to reveal underlying basic processes; the tunneling of H-atoms, the vibration of M- and H-atoms, the transition of core electrons, and the collision/scattering of irradiated particles by H-atoms. Note that a new state of matter is realized by shock compression of elemental hydrogen, where the dissociation/recombination of H₂ molecules is repeated in very short times.
 Then I proceed to describe some characteristic features of M-H and H-H interactions, placing emphasis on widely different ranges of the interactions.
 It is my hope that a close examination of these unique features of the M-H system will lead to future development of its physics.

Organizer: AOKI (PHS 3140)