Photoionized plasmas induced in neon with extreme ultraviolet and soft X-ray pulses produced using low and high energy laser systems

被引：23

作者：

Bartnik, A. ^{[1
]}

Wachulak, P. ^{[1
]}

Fok, T. ^{[1
]}

Wergrzynski, L. ^{[1
]}

Fiedorowicz, H. ^{[1
]}

Pisarczyk, T. ^{[2
]}

Chodukowski, T. ^{[2
]}

Kalinowska, Z. ^{[2
]}

Dudzak, R. ^{[3
,4
]}

Dostal, J. ^{[3
,4
]}

Krousky, E. ^{[3
,4
]}

Skala, J. ^{[3
,4
]}

Ullschmied, J. ^{[3
,4
]}

Hrebicek, J. ^{[3
,4
]}

Medrik, T. ^{[3
,4
]}

机构：

[1] Mil Univ Technol, Inst Optoelect, PL-00908 Warsaw, Poland

[2] Inst Plasma Phys & Laser Microfus, PL-00908 Warsaw, Poland

[3] Inst Plasma Phys ASCR, Prague, Czech Republic

[4] Inst Phys ASCR, Prague, Czech Republic

来源：

PHYSICS OF PLASMAS | 2015年 / 22卷 / 04期

关键词：

CROSS-SECTIONS; EUV; RADIATION; DRIVEN;

D O I：

10.1063/1.4919024

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：

A comparative study of photoionized plasmas created by two soft X-ray and extreme ultraviolet (SXR/EUV) laser plasma sources with different parameters is presented. The two sources are based on double-stream Xe/He gas-puff targets irradiated with high (500 J/0.3 ns) and low energy (10 J/1 ns) laser pulses. In both cases, the SXR/EUV beam irradiated the gas stream, injected into a vacuum chamber synchronously with the radiation pulse. Irradiation of gases resulted in formation of photoionized plasmas emitting radiation in the SXR/EUV range. The measured Ne plasma radiation spectra are dominated by emission lines corresponding to radiative transitions in singly charged ions. A significant difference concerns origin of the lines: K-shell or L-shell emissions occur in case of the high and low energy irradiating system, respectively. In high energy system, the electron density measurements were also performed by laser interferometry, employing a femtosecond laser system. A maximum electron density for Ne plasma reached the value of 2.10(18) cm(-3). For the low energy system, a detection limit was too high for the interferometric measurements, thus only an upper estimation for electron density could be made. (C) 2015 AIP Publishing LLC.

引用

页数：9

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