Inelastic neutron scattering of liquid S[lc]n: Nature of coherent quasielastic neutron scattering

Autor:	Kamiyama, Takashi, Masaki, Tadahiko, Itami, Toshio
Jazyk:	angličtina
Rok vydání:	2002
Předmět:	分子動力学 スズ 擬弾性散乱 原子拡散動力学 融点 Nuclear Theory neutron scattering melting point inelastic scattering quasielastic scattering molecular dynamics 中性子散乱 非弾性散乱 構造緩和 liquid metal tin structural analysis structure factor 液体金属 構造解析 atomic diffusive dynamics structural relaxation 構造因子
Zdroj:	宇宙開発事業団技術報告: Modeling and Precise Experiments of Diffusion Phenomena in Melts Under Microgravity: Annual Reports 2001 = NASDA Technical Memorandum: Modeling and Precise Experiments of Diffusion Phenomena in Melts Under Microgravity: Annual Reports 2001. :97-104
ISSN:	1345-7888
Popis:	For the purpose to evaluate atomic diffusive dynamics in liquid Sn the inelastic neutron scattering measurement has been carried out. The quasielastic neutron scattering in a part of the inelastic scattering results from the diffusion or structure relaxational motion. The obtained width of the quasielastic line versus momentum transfer Q deviates from Fick's law and close to the jump-diffusion model corresponding to water. As Sn is the almost coherent scatterer, this width is considered to be derived from the existence of the correlated motion of particles. The quasielastic line behavior in liquid Sn may represent the slow structural relaxation of the particle shell around the new site after the jump motion of a Sn atom in diffusion process. 資料番号: AA0045399008 レポート番号: NASDA-TMR-020025E
Databáze:	OpenAIRE
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