標題: Motion of metallic microparticles in superfluid helium in the presence of space charge
作者: Moroshkin, P.
Leiderer, P.
Kono, K.
物理研究所
Institute of Physics
公開日期: 1-四月-2017
摘要: We report an experimental and theoretical study of the motion of metallic micro-and nanoparticles in cryogenic superfluid helium in the presence of a static electric field. Depending on the polarity of the applied field, the system is charged with a large number of positive ions or free electrons. For the electrons, we observe the formation of a negative charge layer above the free surface of liquid He and a shuttle-like motion of metallic particles between this layer and the positively charged bottom electrode. For the positive ions, the positive space charge is created in the liquid and the particle motion resembles bouncing off the (negatively charged) bottom electrode. The observations are explained by a theoretical model based on classical electrostatics and hydrodynamics. Published by AIP Publishing.
URI: http://dx.doi.org/10.1063/1.4979819
http://hdl.handle.net/11536/145444
ISSN: 1070-6631
DOI: 10.1063/1.4979819
期刊: PHYSICS OF FLUIDS
Volume: 29
顯示於類別:期刊論文