Optimization of a laser plasma-based x-ray source according to WDM absorption spectroscopy requirements

被引：10

作者：

Martynenko, A. S. ^{[1
]}

Pikuz, S. A. ^{[1
,2
]}

Skobelev, I. Yu. ^{[1
,2
]}

Ryazantsev, S. N. ^{[1
,2
]}

Baird, C. D. ^{[3
]}

Booth, N. ^{[4
]}

Dohl, L. N. K. ^{[3
]}

Durey, P. ^{[3
]}

Faenov, A. Ya. ^{[1
,5
]}

Farley, D. ^{[3
,5
]}

Kodama, R. ^{[6
]}

Lancaster, K. ^{[3
]}

McKenna, P. ^{[7
]}

Murphy, C. D. ^{[3
]}

Spindloe, C. ^{[4
]}

Pikuz, T. A. ^{[1
,5
]}

Woolsey, N. ^{[3
]}

机构：

[1] Russian Acad Sci, Joint Inst High Temp, Moscow 125412, Russia

[2] Natl Res Nucl Univ MEPhI, Kashirskoe Sh 31, Moscow 115409, Russia

[3] Univ York, Dept Phys, York Plasma Inst, York YO10 5DD, N Yorkshire, England

[4] STFC Rutherford Appleton Lab, Cent Laser Facil, Didcot OX11 0QX, Oxon, England

[5] Osaka Univ, Open & Transdisciplinary Res Initiat, Osaka 5650871, Japan

[6] Osaka Univ, Inst Laser Engn, Suita, Osaka 5650871, Japan

[7] Univ Strathclyde, SUPA, Dept Phys, Glasgow G4 0NG, Lanark, Scotland

来源：

MATTER AND RADIATION AT EXTREMES | 2021年 / 6卷 / 01期

基金：

俄罗斯基础研究基金会; 英国工程与自然科学研究理事会;

关键词：

INERTIAL-CONFINEMENT FUSION; HIGH-INTENSITY; FRONT-END; RADIATION; EXAFS; PW;

D O I：

10.1063/5.0025646

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

X-ray absorption spectroscopy is a well-accepted diagnostic for experimental studies of warm dense matter. It requires a short-lived X-ray source of sufficiently high emissivity and without characteristic lines in the spectral range of interest. In the present work, we discuss how to choose an optimum material and thickness to get a bright source in the wavelength range 2 angstrom-6 angstrom (similar to 2 keV to 6 keV) by considering relatively low-Z elements. We demonstrate that the highest emissivity of solid aluminum and silicon foil targets irradiated with a 1-ps high-contrast sub-kJ laser pulse is achieved when the target thickness is close to 10 mu m. An outer plastic layer can increase the emissivity even further.

引用

页数：8

共 69 条

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