NONLINEAR EFFECTS ON SPIN-WAVES IN HE-3-HE-4 DILUTE-SOLUTIONS

被引：19

作者：

AKIMOTO, H ^{[1
]}

ISHIKAWA, O ^{[1
]}

OH, GH ^{[1
]}

NAKAGAWA, M ^{[1
]}

HATA, T ^{[1
]}

KODAMA, T ^{[1
]}

机构：

[1] OSAKA CITY UNIV,FAC SCI,OSAKA 558,JAPAN

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 1991年 / 82卷 / 5-6期

关键词：

D O I：

10.1007/BF00681421

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Spin dynamics of He-3-He-4 dilute solution have been studied in the collisionless regime by NMR methods. In cw NMR experiments, we observed spin waves in a magnetic field gradient. The frequency difference between the first mode and the others obeyed a two-thirds power law in the strength of the field gradient. By using a pulsed NMR method, nonlinear spin dynamics were studied. We observed the large amplitude spin waves after an rf pulse. The frequency of each spin-wave mode depended on the tipping angle. By using the parameter lambda determined in the present experiment, the numerical calculated results based on Leggett-Rice theory are in good agreement with the results of the pulsed NMR experiments.

引用

页码：295 / 316

页数：22

共 27 条

[1] MAGNETIC-SUSCEPTIBILITY OF DILUTE MIXTURES OF HE-3 IN LIQUID-HE-4 [J].