液体金属の横波モード : 高校物理の教科書の常識を覆すのか?

URI http://harp.lib.hiroshima-u.ac.jp/it-hiroshima/metadata/9765
ファイル
タイトル
液体金属の横波モード : 高校物理の教科書の常識を覆すのか?
著者
氏名 細川 伸也
ヨミ ホソカワ シンヤ
別名 Hosokawa Shinya
キーワード
Inelastic x–ray scattering
Particle dynamics
Liquid metals
Excitation modes
抄録

The transverse acoustic excitation modes were detected by inelastic x–ray scattering in liquid Ga in the Q range above 9 nm‒1 although liquid Ga is mostly described by a hard–sphere liquid. An ab initio molecular dynamics simulation clearly supports this finding. From the detailed analysis for the S (Q,ω) spectra with a good statistic quality, the lifetime of 0.5 ps and the propagating length of 0.4–0.5 nm can be estimated for the transverse acoustic phonon modes, which may correspond to the lifetime and size of cages formed instantaneously in liquid Ga. The transverse excitations are also observed in liquid Fe and Cu, which again indicate the existence of small clusters. In these liquid metals, the short–living cluster may originate from icosahedra, which are characteistic of liquid transition metals.

掲載雑誌名
広島工業大学紀要. 研究編
45
開始ページ
175
終了ページ
187
出版年月日
2011
出版者
広島工業大学
ISSN
1346-9975
NCID
AA11599110
NAID
40018724480
本文言語
日本語
資料タイプ
紀要論文
著者版フラグ
出版社版
旧URI
区分
it-hiroshima