COLLECTIVE EXCITATIONS IN LIQUID DEUTERIUM STUDIED BY INELASTIC NEUTRON-SCATTERING

被引：18
作者：
BERMEJO, FJ
MARTINEZ, JL
MARTINMARERO, D
MOMPEAN, FJ
GARCIAHERNANDEZ, M
CHAHID, A
机构：
[1] INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE,FRANCE
[2] RUTHERFORD APPLETON LAB,ISIS PULSED NEUTRON FACIL,DIDCOT OX11 0QX,OXON,ENGLAND
来源：
PHYSICS LETTERS A | 1991年 / 158卷 / 05期
关键词：
D O I：
10.1016/0375-9601(91)91009-3
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Well defined collective excitations up to a momentum transfer value of 3.8 angstrom-1 have been found in liquid deuterium 0.5 K above the melting point. The derived dispersion curve shows a remarkable similarity with the one observed for liquid He-4 in the normal liquid phase, with a well defined minimum at a momentum transfer of 2.08 angstrom-1 corresponding to a gap of 30 K. A qualitative comparison is made with recent calculations on liquid para-hydrogen at the triple point.
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页码：253 / 257
页数：5
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