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Article

Analysis of Lyα Dielectronic Satellites to Characterize Temporal Profile of Intense Femtosecond Laser Pulses

1
Joint Institute for High Temperatures of the Russian Academy of Sciences (JIHT RAS), Izhorskaya st. 13 Bd.2, 125412 Moscow, Russia
2
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoe Shosse 31, 115409 Moscow, Russia
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Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 2-8 Yamadaoka, Suita, Osaka 565-0871, Japan
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Kansai Photon Science Institute (KPSI), National Institutes for Quantum and Radiological Science and Technology(QST), 8-1-7 Umemidai, Kizugawa, Kyoto 619-0215, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Ludmila Isaenko
Crystals 2021, 11(2), 130; https://doi.org/10.3390/cryst11020130
Received: 6 January 2021 / Revised: 23 January 2021 / Accepted: 25 January 2021 / Published: 28 January 2021
(This article belongs to the Special Issue Development of High Intensity Crystal Laser and Its Applications)
In the paper, an X-ray spectroscopy-based approach on laser pulse temporal profile characterization is described. The structure of dielectronic satellites to H-like Lyα lines strongly depends on a plasma electron density, so it can be applied for diagnostics. These spectral lines are mainly emitted during initial stage of laser plasma expansion. It means that plasma parameters obtained via them characterizes matter conditions in a region surrounding a spot of laser-matter interaction. In the case when a laser contrast is high enough, the radiation interacts with cold matter, which had not been preliminary perturbed by a laser prepulse, and the satellites structure shape corresponding to high densities should be observed. It allows us to consider the satellites as a diagnostic tool for the laser temporal profile quality. In the paper dependencies of the dielectronic satellites structure on electron densities obtained from detailed kinetic calculations in the wide range of plasma parameter for different elements are under discussion. Fundamental theoretical aspects of plasma diagnostic based on the feature of satellite structures shape in hot dense plasma, which led to development of the proposed method, are also explained. View Full-Text
Keywords: X-ray spectroscopy; dielectronic satellites; crystal-based spectrographs; high-power laser—plasma interaction; laser contrast; temporal profile; laser plasma; preplasma threshold X-ray spectroscopy; dielectronic satellites; crystal-based spectrographs; high-power laser—plasma interaction; laser contrast; temporal profile; laser plasma; preplasma threshold
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MDPI and ACS Style

Ryazantsev, S.N.; Skobelev, I.Y.; Martynenko, A.S.; Alkhimova, M.A.; Mishchenko, M.D.; Sedov, M.V.; Pikuz, T.A.; Fukuda, Y.; Kiriyama, H.; Pirozhkov, A.S.; Pikuz, S.A. Analysis of Lyα Dielectronic Satellites to Characterize Temporal Profile of Intense Femtosecond Laser Pulses. Crystals 2021, 11, 130. https://doi.org/10.3390/cryst11020130

AMA Style

Ryazantsev SN, Skobelev IY, Martynenko AS, Alkhimova MA, Mishchenko MD, Sedov MV, Pikuz TA, Fukuda Y, Kiriyama H, Pirozhkov AS, Pikuz SA. Analysis of Lyα Dielectronic Satellites to Characterize Temporal Profile of Intense Femtosecond Laser Pulses. Crystals. 2021; 11(2):130. https://doi.org/10.3390/cryst11020130

Chicago/Turabian Style

Ryazantsev, Sergey N., Igor Y. Skobelev, Artem S. Martynenko, Maria A. Alkhimova, Mikhail D. Mishchenko, Maksim V. Sedov, Tatiana A. Pikuz, Yuji Fukuda, Hiromitsu Kiriyama, Alexander S. Pirozhkov, and Sergey A. Pikuz. 2021. "Analysis of Lyα Dielectronic Satellites to Characterize Temporal Profile of Intense Femtosecond Laser Pulses" Crystals 11, no. 2: 130. https://doi.org/10.3390/cryst11020130

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