相关实验视频
Updated: Jul 12, 2026

10:09
Fast Imaging Technique to Study Drop Impact Dynamics of Non-Newtonian Fluids
Published on: March 5, 2014
在0.15凯尔文的-4液滴内,有超流动性的证据
1Max-Planck-Institut für Strömungsforschung, Bunsenstrabetae 10, 37073 Göttingen, Germany. General Physics Institute, Russian Academy of Sciences, 117942 Moscow, Russia.
概括
这项研究使用红外光谱学来研究滴中的分子. 结果表明,这是除以外的液体中首次出现超流动性的证据.
科学领域:
- 量子流体和固体中的量子体.
- 频谱学是一种光谱学.
- 低温物理 低温物理
背景情况:
- 超流动性是一种在液态中观察到的量子力学现象.
- 了解其他系统中的超流动性可以揭示基本物理.
- 液滴为研究量子现象提供了一个独特的环境.
研究的目的:
- 为了研究碳硫化物 (OCS) 分子在-4 ((4) He) 和混合的 (4) He/(3) He滴中的行为.
- 探索不同环境中围绕OCS轴的角度动量的激发.
- 为了提供超流动性在以外的液体的证据.
主要方法:
- 红外光谱学被用来分析OCS分子,其中添加了副 (pH(2) 或正态 (oD(2)).
- 实验是在0.38K的纯 (4) 滴和0.15K的混合 (4) / (3) 滴中进行的.
- 监测了与角动量激发相关的光谱特征.
主要成果:
- 在纯 (4) 滴中,光谱特征表明了pH(2) 和OD(2) 两者的激发角动量.
- 在较冷的混合 (4) He/(3) He滴中,这些特征在oD(2) 持续存在,但在pH(2) 消失.
- 在pH(2) 中光谱特征的消失表明了角动量激发的停止.
结论:
- 观察到的光谱特征的变化与混合滴滴中超流动性的出现一致.
- 这项研究提供了第一个超流动性在以外的液体系统的光谱证据.
- 这些发现为探索新型超流体环境中的量子现象开辟了新的途径.
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