Electrical and optical properties of warm dense beryllium along the   principal Hugoniot

doi:10.1063/1.4931068

CORC > 北京大学 > 工学院

	Electrical and optical properties of warm dense beryllium along the principal Hugoniot
	Li, Chuan-Ying ; Wang, Cong ; Wu, Ze-Qing ; Li, Zi ; Li, Da-Fang ; Zhang, Ping
刊名	PHYSICS OF PLASMAS
	2015
关键词	QUANTUM MOLECULAR-DYNAMICS EQUATION-OF-STATE FUNCTIONAL THEORY CONDUCTION MATTER PSEUDOPOTENTIALS SIMULATIONS EVOLUTION PLASMAS MODEL
DOI	10.1063/1.4931068
英文摘要	The electrical and optical properties of warm dense beryllium along the principal Hugoniot for temperatures from 0.95 eV to 10.65 eV and densities from 3.8 to 6.0 g/cm(3) are investigated by using quantum molecular dynamics (QMD) simulations combined with the Kubo-Greenwood formulation. The dc conductivity sigma(dc) and the ionization fraction are yielded by fitting the optical conductivity with the Drude-Smith model. The first-principles transport coefficients are compared with results of the Lee-More model and the Brysk model [Plasma Phys. 17, 473 (1975)]. Compared with the QMD result, the Lee-More model underestimates sigma(dc) by 87% at low temperatures, approaches the QMD result gradually with the temperature rising, yet still underestimates sigma(dc) by 49% corresponding to the temperature 10.65 eV. In the whole temperature range under investigation, the Brysk model overestimates the electronic thermal conductivity kappa while the Lee-More model underestimates kappa. The differences are reduced with the temperature increasing. At the temperature 10.65 eV, the Brysk kappa is still around twice as large as the QMD result, and the Lee-More kappa is smaller than the QMD data by about 40%. In addition, QMD Rosseland mean opacities are shown to be three orders of magnitude larger than results of the average-atom model. (C) 2015 AIP Publishing LLC.; National Basic Research program of China [2013CB922200]; National Natural Science Foundation (NSFC) of China [11405010, 11475031, 11275032, 11005012, 11275029]; foundation of President of Chinese Academy of Engineering Physics [2014-1-036, 2014-1-029]; foundation for Development of Science and Technology of China Academy of Engineering Physics [2013B0102019, 2013B0102016, 2013A0102005, 2014A0102005]; National Basic Security Research Program of China; National High-Tech ICF Committee of China; SCI(E); EI; ARTICLE; zhangping@iapcm.ac.cn; 9; 22
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/416517]
专题	工学院
推荐引用方式 GB/T 7714	Li, Chuan-Ying,Wang, Cong,Wu, Ze-Qing,et al. Electrical and optical properties of warm dense beryllium along the principal Hugoniot[J]. PHYSICS OF PLASMAS,2015.
APA	Li, Chuan-Ying,Wang, Cong,Wu, Ze-Qing,Li, Zi,Li, Da-Fang,&Zhang, Ping.(2015).Electrical and optical properties of warm dense beryllium along the principal Hugoniot.PHYSICS OF PLASMAS.
MLA	Li, Chuan-Ying,et al."Electrical and optical properties of warm dense beryllium along the principal Hugoniot".PHYSICS OF PLASMAS (2015).