Absorption spectra measurements of the x-ray radiation heated SiO2 aerogel plasma in 'dog-bone' targets irradiated by high power laser pulses

We studied the opacity effect of the SiO2 aerogel plasma heated by x-ray radiation produced by high power laser pulses irradiating the inner surface of golden dog-bone targets. The PET crystal spectrometer was used to measure the absorption spectra of the plasmas in the range from 6.4 Å to 7.4 Å, am...

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Published inJournal of physics. Conference series Vol. 112; no. 4; p. 042005
Main Authors Zhang, Y, Dong, Q-L, Wang, S-J, Li, Y-T, Zhang, J, Wei, H-G, Shi, J-R, Zhao, G, Zhang, J-Y, Wen, T-S, Zhang, W-H, Hu, X, Liu, S-Y, Ding, Y-K, Zhang, L, Tang, Y-J, Zhang, B-H, Zheng, Z-J, Nishimura, H, Fujioka, S, Takabe, H
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.05.2008
Subjects
Absorption spectra
Aerogels
High power lasers
Laser beam heating
Neutral atoms
Physics
Plasma temperature
Plasmas (physics)
Radiation
Silicon dioxide
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Summary:We studied the opacity effect of the SiO2 aerogel plasma heated by x-ray radiation produced by high power laser pulses irradiating the inner surface of golden dog-bone targets. The PET crystal spectrometer was used to measure the absorption spectra of the plasmas in the range from 6.4 Å to 7.4 Å, among which the line emissions involving the K shell of Si ions from He-like to neutral atom were located. The experimental results were analyzed with Detailed-Level-Accounting method. As the plasma temperature increased, the characteristic lines of highly ionized ions gradually dominated the absorption spectrum.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/112/4/042005