The creation of large-volume, gradient-free warm dense matter with an x-ray free-electron laser

被引：51

作者：

Levy, A. ^{[1
,2
]}

Audebert, P. ^{[2
]}

Shepherd, R. ^{[3
]}

Dunn, J. ^{[3
]}

Cammarata, M. ^{[4
]}

Ciricosta, O. ^{[5
]}

Deneuville, F. ^{[6
]}

Dorchies, F. ^{[6
]}

Fajardo, M. ^{[7
]}

Fourment, C. ^{[6
]}

Fritz, D. ^{[4
]}

Fuchs, J. ^{[2
]}

Gaudin, J. ^{[8
]}

Gauthier, M. ^{[2
]}

Graf, A. ^{[3
]}

Lee, H. J. ^{[4
]}

Lemke, H. ^{[4
]}

Nagler, B. ^{[4
]}

Park, J. ^{[3
]}

Peyrusse, O. ^{[6
]}

Steel, A. B. ^{[3
]}

Vinko, S. M. ^{[5
]}

Wark, J. S. ^{[5
]}

Williams, G. O. ^{[7
]}

Zhu, D. ^{[4
]}

Lee, R. W. ^{[4
,9
]}

机构：

[1] Univ Paris 06, Sorbonne Univ, UMR 7588, CNRS,INSP, F-75005 Paris, France

[2] UPMC, CEA, CNRS, Ecole Polytech,LULI, F-91128 Palaiseau, France

[3] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA

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

[5] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

[6] Univ Bordeaux, CNRS, CELIA Ctr Lasers Intenses & Applicat, CEA,UMR 5107, F-33405 Talence, France

[7] Inst Super Tecn, P-1049001 Lisbon, Portugal

[8] European XFEL GmbH, D-22607 Hamburg, Germany

[9] Univ Calif Berkeley, Inst Mat Dynam Extreme Condit, Berkeley, CA 94720 USA

来源：

PHYSICS OF PLASMAS | 2015年 / 22卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

STATE; PLASMA; EQUATIONS;

D O I：

10.1063/1.4916103

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The efficiency and uniformity of heating induced by hard x-ray free-electron laser pulse is investigated for 0.5 mu m silver foils using the X-ray Pump Probe instrument at the Linac Coherent Light Source facility. Intense 8.9 keV x-ray pulses of 60 fs duration deposit energy predominantly via inner-shell ionization to create a non-equilibrium Ag solid density plasma. The x-ray pulses are focused to 14 X 17 mu m(2) by means of beryllium lenses and by varying the total beam energy, the energy deposition is varied over a range of irradiances from 4.4 to 6.5 X 10(15) W/cm(2). Two time-and-space resolved interferometers simultaneously probed the expansion of the front and rear sample surfaces and find evidence of a nearly symmetric expansion pointing to the uniformity of energy deposition over the full target thickness. The experimental results are compared with two different hydrodynamic simulations of the sample expansion. The agreement between experimental and theoretical results yields an estimate of the temperature evolution as a function of x-ray irradiance that varies from 8 to 10 eV for the x-ray irradiances studied. (C) 2015 AIP Publishing LLC.

引用

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