Oxygen microscopic dynamics in liquid potassium studied by inelastic neutron scattering

被引：0
|
作者：
Novikov, AG [1 ]
Savostin, VV [1 ]
Shimkevich, AL [1 ]
Zaezjev, MV [1 ]
机构：
[1] Obninsk Phys & Power Engn Inst, State Sci Ctr, Obninsk 249020, Kaluga Region, Russia
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 1999年 / 250卷
关键词：
D O I：
10.1016/S0022-3093(99)00223-9
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The microscopic dynamics of oxygen dissolved in liquid potassium is investigated by inelastic neutron scattering at a temperature of 550 K. Three oxygen concentrations in the melt were studied: 1.8, 5.1 and 8.5 at.%. A partial frequency spectrum of oxygen atomic vibrations and the frequency spectrum of potassium-oxygen melt are obtained from the analysis of double-differential scattering cross-sections. The average energy for oxygen noticeably exceeds the one for Liquid potassium. The life time of oxygen atomic vibrations which is an order of magnitude less than that for potassium is estimated from the velocity autocorrelation function. (C) 1999 Elsevier Science B.V. All rights reserved.
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页码：124 / 128
页数：5
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