Transport properties of hydrogen-helium mixtures at extreme density and   temperature conditions

doi:10.1103/PhysRevE.92.043108

CORC > 北京大学 > 工学院

	Transport properties of hydrogen-helium mixtures at extreme density and temperature conditions
	Li, Dafang ; Wang, Cong ; Kang, Wei ; Yan, Jun ; Zhang, Ping
刊名	PHYSICAL REVIEW E
	2015
关键词	STATISTICAL-MECHANICAL THEORY AUGMENTED-WAVE METHOD IRREVERSIBLE PROCESSES MOLECULAR-DYNAMICS PHASE-SEPARATION IONIZED MATTER FLUID PLANETS JUPITER METALS CONDUCTION
DOI	10.1103/PhysRevE.92.043108
英文摘要	We perform a systematic study of hydrogen-helium mixtures using quantum molecular dynamics (QMD) with a focus on the equations of state and structural and transport properties such as electrical conductivity, diffusion, and viscosity at conditions of giant planet interiors of 0.2 similar to 2.3 g/cm(3) and 1000 similar to 80000 K for a typical helium mass fraction of 0.245. The H-He separation is found at low temperatures by analyzing the trajectories and pair distribution functions. We show that the diffusion coefficients exhibit transitions from kinetics- to potential-, and then to demixing-dominated regimes. In addition, we identify the discontinuity feature of optical absorption of a H-He mixture at low density and temperature conditions, which results from the change from an intraband to an interband transition. The Stokes-Einstein relation between the diffusion and viscosity coefficients is also discussed.; NSFC [11205019, 11474034, 11275032]; Foundations for Development of Science and Technology of China Academy of Engineering Physics [2015B0102022]; SCI(E); EI; PubMed; ARTICLE; zhang_ping@iapcm.ac.cn; 4; 043108; 92
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/415651]
专题	工学院
推荐引用方式 GB/T 7714	Li, Dafang,Wang, Cong,Kang, Wei,et al. Transport properties of hydrogen-helium mixtures at extreme density and temperature conditions[J]. PHYSICAL REVIEW E,2015.
APA	Li, Dafang,Wang, Cong,Kang, Wei,Yan, Jun,&Zhang, Ping.(2015).Transport properties of hydrogen-helium mixtures at extreme density and temperature conditions.PHYSICAL REVIEW E.
MLA	Li, Dafang,et al."Transport properties of hydrogen-helium mixtures at extreme density and temperature conditions".PHYSICAL REVIEW E (2015).