NEUTRON INELASTIC-SCATTERING FROM HE-4 IN RESTRICTED GEOMETRIES

被引：12

作者：

GIBBS, MR

SOKOL, PE

AZUAH, RT

STIRLING, WG

ADAMS, MA

机构：

[1] UNIV KEELE, DEPT PHYS, KEELE ST5 5BG, STAFFS, ENGLAND

[2] PENN STATE UNIV, DEPT PHYS, UNIVERSITY PK, PA 16802 USA

[3] RUTHERFORD APPLETON LAB, DIDCOT OX11 0QX, OXON, ENGLAND

来源：

PHYSICA B-CONDENSED MATTER | 1995年 / 213卷

基金：

英国工程与自然科学研究理事会; 美国国家科学基金会;

关键词：

D O I：

10.1016/0921-4526(95)00369-K

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

When liquid He-4 is condensed in porous aerogel glass (typical pore size approximate to 5000 Angstrom), many of the superfluid properties are significantly altered. Measurements have been made of the dynamic structure factor S(Q, omega) of liquid He-4 in restricted geometries. The collective phonon-roton excitations are shown to have an intrinsic broadening associated with the restricted geometry. The temperature dependence of the excitation spectrum is discussed.

引用

页码：462 / 464

页数：3

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