Evidence of high-n hollow-ion emission from Si ions pumped by ultraintense x-rays from relativistic laser plasma

被引：17

作者：

Colgan, J. ^{[1
]}

Faenov, A. Ya. ^{[2
,3
]}

Pikuz, S. A. ^{[3
,4
]}

Tubman, E. ^{[5
]}

Butler, N. M. H. ^{[6
]}

Abdallah, J., Jr. ^{[1
]}

Dance, R. J. ^{[6
]}

Pikuz, T. A. ^{[3
,7
,8
]}

Skobelev, I. Yu. ^{[3
,4
]}

Alkhimova, M. A. ^{[3
,4
]}

Booth, N. ^{[9
]}

Green, J. ^{[9
]}

Gregory, C. ^{[9
]}

Andreev, A. ^{[10
,11
]}

Loetzsch, R. ^{[12
]}

Uschmann, I. ^{[12
]}

Zhidkov, A. ^{[7
,8
]}

Kodama, R. ^{[2
,7
,8
]}

McKenna, P. ^{[6
]}

Woolsey, N. ^{[5
]}

机构：

[1] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

[2] Osaka Univ, Inst Acad Initiat, Suita, Osaka 5650871, Japan

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

[4] Natl Res Nucl Univ MEPhI, Moscow 115409, Russia

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

[6] Univ Strathclyde, Dept Phys, SUPA, Glasgow G4 ONG, Lanark, Scotland

[7] PPC Osaka Univ, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan

[8] JST, CREST, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan

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

[10] Max Born Inst Berlin 12489, Max Born Str 2a, Berlin, Germany

[11] ELI ALPS, H-6720 Szeged, Hungary

[12] Univ Jena, Inst Opt & Quantenelekt, Max Wien Pl 1, D-07743 Jena, Germany

来源：

EPL | 2016年 / 114卷 / 03期

基金：

英国工程与自然科学研究理事会; 俄罗斯基础研究基金会; 英国科学技术设施理事会;

关键词：

FEMTOSECOND LASER; ATOMS; SPECTRA; IONIZATION; OPACITY; PULSES;

D O I：

10.1209/0295-5075/114/35001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the first observation of high-n hollow ions (ions having no electrons in the K or L shells) produced in Si targets via pumping by ultra-intense x-ray radiation produced in intense laser-plasma interactions reaching the radiation dominant kinetics regime (RDKR). The existence of these new types of hollow ions in high-energy density plasma has been found via observation of highly resolved x-ray emission spectra of silicon plasma. This has been confirmed by plasma kinetics calculations, underscoring the ability of powerful radiation sources to fully strip electrons from the innermost shells of light atoms. Hollow-ions spectral diagnostics provide a unique opportunity to characterize powerful x-ray radiation of laboratory and astrophysical plasmas. With the use of this technique we provide evidence for the existence of the RDKR via observation of asymmetry in the observed radiation of hollow ions from the front and rear sides of the target. Copyright (C) EPLA, 2016

引用

页数：6

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