ROTONS AND QUANTUM EVAPORATION FROM SUPERFLUID HE-4

被引：41

作者：

DALFOVO, F

FRACCHETTI, A

LASTRI, A

PITAEVSKII, L

STRINGARI, S

机构：

[1] INFM,I-35050 TRENT,ITALY

[2] TECHNION ISRAEL INST TECHNOL,DEPT PHYS,IL-32000 HAIFA,ISRAEL

[3] KAPITZA INST PHYS PROBLEMS,MOSCOW 117334,RUSSIA

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 75卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.75.2510

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The probability of evaporation induced by rotons at the surface of superfluid helium is calculated using time dependent density functional theory. We consider excitation energies and incident angles such that phonons do not take part in the scattering process. We predict sizable evaporation rates, which originate entirely from quantum effects. Results for the atomic reflectivity and for the probability of the roton change-mode reflection are also presented.

引用

页码：2510 / 2513

页数：4

共 24 条

[1] INTERPRETATION OF JOHNSTON-KING EXPERIMENT ON EVAPORATION OF LIQUID HE [J].