Time evolution of electron structure in femtosecond heated warm dense molybdenum

被引：20

作者：

Dorchies, F. ^{[1
]}

Recoules, V. ^{[2
]}

Bouchet, J. ^{[2
]}

Fourment, C. ^{[1
]}

Leguay, P. M. ^{[1
]}

Cho, B. I. ^{[3
]}

Engelhorn, K. ^{[4
]}

Nakatsutsumi, M. ^{[5
]}

Ozkan, C. ^{[5
]}

Tschentscher, T. ^{[5
]}

Harmand, M. ^{[6
]}

Toleikis, S. ^{[6
]}

Stoermer, M. ^{[7
]}

Galtier, E. ^{[8
]}

Lee, H. J. ^{[8
]}

Nagler, B. ^{[8
]}

Heimann, P. A. ^{[8
]}

Gaudin, J. ^{[1
]}

机构：

[1] Univ Bordeaux, CNRS, CELIA Ctr Lasers Intenses & Applicat, CEA,UMR 5107, F-33400 Talence, France

[2] CEA, DAM, DIF, F-91297 Arpajon, France

[3] GIST, Dept Phys & Photon Sci, Kwangju, South Korea

[4] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[5] European XFEL, Hamburg, Germany

[6] DESY, Hamburg, Germany

[7] Helmholtz Zentrum Geesthacht, D-21502 Geesthacht, Germany

[8] SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA

来源：

PHYSICAL REVIEW B | 2015年 / 92卷 / 14期

基金：

新加坡国家研究基金会;

关键词：

PHOTOELECTRON-SPECTROSCOPY; TRANSITION; STATE; GOLD;

D O I：

10.1103/PhysRevB.92.144201

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The time evolution of the electron structure is investigated in a molybdenum foil heated up to the warm dense matter regime by a femtosecond laser pulse, through time-resolved x-ray absorption near-edge spectroscopy. Spectra are measured with independent characterizations of temperature and density. They are successfully compared with ab initio quantum molecular dynamic calculations. We demonstrate that the observed white line in the L-3 edge reveals the time evolution of the electron density of state from the solid to the hot (a few eV) and expanding liquid. The data indicate a highly nonequilibrated state, 5 ps after heating.

引用

页数：5

共 42 条

[1] Electronic Structure Investigation of Highly Compressed Aluminum with K Edge Absorption Spectroscopy [J].