Beysens Daniel, Chatain Denis, Evesque Pierre, Garrabos Yves
ESEME, Service des Basses Températures, Commissariat à l'Energie Atomique, 17 rue des Martyrs, 38054 Grenoble Cedex 9, France.
Phys Rev Lett. 2005 Jul 15;95(3):034502. doi: 10.1103/PhysRevLett.95.034502. Epub 2005 Jul 14.
Under weightlessness conditions, the phase transition of fluids is driven only by slow capillary flows. We investigate the effect of high-frequency vibrations to reproduce some features of gravity effects and show that such vibrations can greatly modify the phase transition kinetics. The investigation is performed in H2 near its critical point (critical temperature 33 K) where critical slowing down enables the phase transition process to be carefully studied. Gravity effects are compensated in a strong magnetic field gradient.
在失重条件下，流体的相变仅由缓慢的毛细管流动驱动。我们研究了高频振动对再现重力效应某些特征的影响，并表明这种振动可以极大地改变相变动力学。该研究是在接近其临界点（临界温度33K）的氢气中进行的，在该点临界减慢使得能够仔细研究相变过程。重力效应在强磁场梯度中得到补偿。
