旋转混合$^3$ He- $^4$ He纳米液滴
Rotating mixed $^3$He-$^4$He nanodroplets
摘要：
由低温流体射流的流体动力学不稳定性产生的混合$^3$ He- $^4$ He液滴可在它们通过实验装置的喷嘴期间获得角动量。这些独立的液滴冷却到非常低的温度，经历同位素分离，形成一个几乎纯的$^3$ He地壳，围绕着一个非常$^4$ He丰富的超流体核心。在这里，旋转的混合氦液滴的稳定性和外观进行了研究，使用密度泛函理论的同位素组成，突出，与一些显着的例外有关的超流内核的存在，与粘性旋转液滴的类比。
英文摘要：
Mixed $^3$He-$^4$He droplets created by hydrodynamic instability of a cryogenic fluid-jet may acquire angular momentum during their passage through the nozzle of the experimental apparatus. These free-standing droplets cool down to very low temperatures undergoing isotopic segregation, developing a nearly pure $^3$He crust surrounding a very $^4$He-rich superfluid core. Here, the stability and appearance of rotating mixed helium droplets are investigated using Density Functional Theory for an isotopic composition that highlights, with some marked exceptions related to the existence of the superfluid inner core, the analogies with viscous rotating droplets.
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