Massive enough particles of frozen hydrogen are known to be captured by quantum vortices in liquid helium. Here, we theoretically demonstrate that the drift of such particles along the vortex is limited by the friction force, which was explicitly calculated. Our hypothesis explains the stabilization of the micron-sized particles’ position on the axis of the vertical vortices despite the significant buoyant force promoting the floating up of the particles.

中文翻译：

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摩擦力限制了微粒在液氦中沿量子涡流的漂移

已知足够大的冷冻氢粒子被液氦中的量子涡流捕获。在这里，我们从理论上证明了这种粒子沿涡旋的漂移受到摩擦力的限制，摩擦力是明确计算的。我们的假设解释了微米级粒子在垂直涡旋轴上的位置的稳定性，尽管有显着的浮力促进了粒子的漂浮。