Two Different Vortex States In Rotating 3He–A Observed by Use of Negative Ions
Two Different Vortex States In Rotating 3He–A Observed by Use of Negative Ions
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旋转 3He 中的两种不同涡旋状态——使用负离子观察到的
DOI：
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发表时间：
1987
影响因子：
8.6
通讯作者：
J. S. Korhonen
中科院分区：
文献类型：
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作者：
K. Nummila;J. Simola;L. Skrbek;J. S. Korhonen
第一个实验表明旋转 3He-A 中存在奇异涡旋。我们利用涡流对离子的聚焦研究了负离子和涡流之间的相互作用。我们的结果证实了核磁共振早期观察到的连续涡旋的存在，但还发现了沿核心具有高离子迁移率的新涡旋状态的证据。新涡旋态的成核取决于外部磁场和样品的旋转历史。
First experiments suggesting the presence of singular vortices in rotating 3He–A are reported. We have studied the interaction between negative ions and vortices by utilizing the focusing of ions by vortices. Our results verify the existence of continuous vortices seen earlier by NMR, but evidence for a new vortex state with high ion mobility along the core was also found. The nucleation of the new vortex state depends on the external magnetic field and the rotation history of the sample.