Nunomura S, Samsonov D, Zhdanov S, Morfill G
CIPS, Max-Planck-Institut für Extraterrestrische Physik, D-85740 Garching, Germany.
Phys Rev Lett. 2005 Jul 8;95(2):025003. doi: 10.1103/PhysRevLett.95.025003. Epub 2005 Jul 7.
Heating and heat transfer were studied in a two-dimensional crystalline complex plasma at the kinetic level. The lattice was formed of microspheres levitated in a plasma sheath. One half of the crystal was heated anisotropically to obtain higher kinetic temperatures in one direction and heat conduction was observed in real time. It was found that the longitudinal phonons conduct heat better than the transverse. The thermometric conductivity coefficient was measured to be 53 mm2/s for longitudinal heating and 30 mm2/s for transverse heating. Heat decay lengths and energy exchange times between the temperature components were determined.
在动力学层面研究了二维晶体复合等离子体中的加热和热传递。晶格由悬浮在等离子体鞘层中的微球构成。晶体的一半被非均匀加热，以在一个方向上获得更高的动力学温度，并实时观测热传导。研究发现纵向声子的导热性能优于横向声子。纵向加热时测得的热导率系数为53平方毫米/秒，横向加热时为30平方毫米/秒。确定了温度分量之间的热衰减长度和能量交换时间。
