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Investigation of Al plasmas from thin foils irradiated by high-intensity extreme ultraviolet

Investigation of Al plasmas from thin foils irradiated by high-intensity extreme ultraviolet

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摘要

Dynamics and spectral transmission of Al plasma produced by extreme ultraviolet (EUV) irradiation of 0.75-mm thick Al foil is investigated. the EUV radiation with the peak power density in the range of 0.19-0.54 TW/cm2 is provided by Z-pinch formed by W multiwire array implosion in the Angara-5-1 facility. Geometry of the experiment ensures that there are no plasma fluxes from the pinch toward the Al foil and plasma. the same EUV source is used as a back illuminator for obtaining the absorption spectrum of Al plasma in the wavelength range of 5-24 nm. It comprises absorption lines of ions Al4+, Al5+, Al6+, Al7+. Analysis of relative intensities of the lines shows that those ions are formed in dense Al plasma with a temperature of ~20 eV. Dynamics of Al plasma has been investigated with transverse laser probing. We have also performed radiation-gas-dynamics simulations of plasma dynamics affected by external radiation, which includes self-consistent radiation transport in a plasma shell. the simulations show good agreement with an experimental absorption spectrum and with experimental data concerning plasma dynamics, as well as with the analysis of line absorption spectrum. this confirms the correctness of the physical model underlying these simulations.

Abstract

Dynamics and spectral transmission of Al plasma produced by extreme ultraviolet (EUV) irradiation of 0.75-mm thick Al foil is investigated. the EUV radiation with the peak power density in the range of 0.19-0.54 TW/cm2 is provided by Z-pinch formed by W multiwire array implosion in the Angara-5-1 facility. Geometry of the experiment ensures that there are no plasma fluxes from the pinch toward the Al foil and plasma. the same EUV source is used as a back illuminator for obtaining the absorption spectrum of Al plasma in the wavelength range of 5-24 nm. It comprises absorption lines of ions Al4+, Al5+, Al6+, Al7+. Analysis of relative intensities of the lines shows that those ions are formed in dense Al plasma with a temperature of ~20 eV. Dynamics of Al plasma has been investigated with transverse laser probing. We have also performed radiation-gas-dynamics simulations of plasma dynamics affected by external radiation, which includes self-consistent radiation transport in a plasma shell. the simulations show good agreement with an experimental absorption spectrum and with experimental data concerning plasma dynamics, as well as with the analysis of line absorption spectrum. this confirms the correctness of the physical model underlying these simulations.

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DOI:10.1016/j.mre.2016.11.007

所属栏目:Research Articles

基金项目:the work was partially supported by RSF under Grant No. 16-12-10487 and by the RFBR project 15-02-04411 and 15- 01-06195.

收稿日期:2016-07-30

修改稿日期:2016-11-10

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作者单位    点击查看

E.V. Grabovski:State Research Center of the Russian Federation Troitsk Institute for Innovation and Fusion Research, 108840, Troitsk, Moscow, Russia
P.V. Sasorov:Keldysh Institute of Applied Mathematics of the Russian Academy of Sciences, Miusskaya pl. 4, 125047, Moscow, Russia
A.P. Shevelko:P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Leninsky pr. 53, Moscow, 119991, Russia
V.V. Aleksandrov:State Research Center of the Russian Federation Troitsk Institute for Innovation and Fusion Research, 108840, Troitsk, Moscow, Russia
S.N. Andreev:P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Leninsky pr. 53, Moscow, 119991, Russia
M.M. Basko:Keldysh Institute of Applied Mathematics of the Russian Academy of Sciences, Miusskaya pl. 4, 125047, Moscow, Russia
A.V. Branitski:State Research Center of the Russian Federation Troitsk Institute for Innovation and Fusion Research, 108840, Troitsk, Moscow, Russia
A.N. Gritsuk:State Research Center of the Russian Federation Troitsk Institute for Innovation and Fusion Research, 108840, Troitsk, Moscow, Russia
G.S. Volkov:State Research Center of the Russian Federation Troitsk Institute for Innovation and Fusion Research, 108840, Troitsk, Moscow, Russia
Ya.N. Laukhin:State Research Center of the Russian Federation Troitsk Institute for Innovation and Fusion Research, 108840, Troitsk, Moscow, Russia
K.N. Mitrofanov:State Research Center of the Russian Federation Troitsk Institute for Innovation and Fusion Research, 108840, Troitsk, Moscow, Russia
G.M. Oleinik:State Research Center of the Russian Federation Troitsk Institute for Innovation and Fusion Research, 108840, Troitsk, Moscow, Russia
A.A. Samokhin:State Research Center of the Russian Federation Troitsk Institute for Innovation and Fusion Research, 108840, Troitsk, Moscow, Russia
V.P. Smirnov:State Research Center of the Russian Federation Troitsk Institute for Innovation and Fusion Research, 108840, Troitsk, Moscow, Russia
I.Yu. Tolstikhinac:P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Leninsky pr. 53, Moscow, 119991, Russia
I.N. Frolov:State Research Center of the Russian Federation Troitsk Institute for Innovation and Fusion Research, 108840, Troitsk, Moscow, Russia
O.F. Yakushev:P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Leninsky pr. 53, Moscow, 119991, Russia

联系人作者:E.V. Grabovski(angara@triniti.ru)

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引用该论文

E.V. Grabovski,P.V. Sasorov,A.P. Shevelko,V.V. Aleksandrov,S.N. Andreev,M.M. Basko,A.V. Branitski,A.N. Gritsuk,G.S. Volkov,Ya.N. Laukhin,K.N. Mitrofanov,G.M. Oleinik,A.A. Samokhin,V.P. Smirnov,I.Yu. Tolstikhinac,I.N. Frolov,O.F. Yakushev. Investigation of Al plasmas from thin foils irradiated by high-intensity extreme ultraviolet[J]. Matter and Radiation at Extremes, 2017, 2(3): 129-138

E.V. Grabovski,P.V. Sasorov,A.P. Shevelko,V.V. Aleksandrov,S.N. Andreev,M.M. Basko,A.V. Branitski,A.N. Gritsuk,G.S. Volkov,Ya.N. Laukhin,K.N. Mitrofanov,G.M. Oleinik,A.A. Samokhin,V.P. Smirnov,I.Yu. Tolstikhinac,I.N. Frolov,O.F. Yakushev. Investigation of Al plasmas from thin foils irradiated by high-intensity extreme ultraviolet[J]. Matter and Radiation at Extremes, 2017, 2(3): 129-138

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