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.

引用

页码：253 / 257

页数：5

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