X-ray absorption spectroscopy study of energy transport in foil targets heated by petawatt laser pulses

“…To measure the X-ray emission spectra from the front surface of the foils, we used three focusing spectrometers with spatial resolution (FSSR) [16,19,20] based on spherically curved αquartz crystals and a photoluminescent plate or image plate as a detector. FSSRs were placed at an angle of 5 0 to the target normal.…”

Section: Methodsmentioning

confidence: 99%

Determining the short laser pulse contrast based on X-Ray emission spectroscopy

Martynenko

Skobelev

Pikuz

et al. 2021

High Energy Density Physics

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“…During the last few decades, a huge variety of different X-ray spectroscopy approaches suitable for plasma diagnostics in different experimental cases were developed. A significant number of them is associated with experiments on interaction of high-intensity laser pulses with matter in different states [12][13][14][15].…”

Section: General Descriptions Of Dielectronic Satellites (Ds)mentioning

confidence: 99%

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

et al. 2021

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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.

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“…The diagnosis and temperature measuring of such plasma is challenging with conventional methods because of the high plasma density and relatively low temperatures. X-ray absorption spectroscopy [14,[33][34][35] can be used to study WDM, but it involves several of crucial difficulties, as discussed in a recent article [36]. It requires a bright, short-lived small continuum x-ray backlighting source, which is still not a trivial task.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of K-shell spectroscopy for temperature measuring of isochorically heated matter in the sub-keV range

Martynenko¹,

Pikuz

Skobelev

et al. 2023

Plasma Phys. Control. Fusion

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Both K-shell X-ray emission spectroscopy and fluorescence spectroscopy are well-accepted diagnostics for experimental studies of warm and hot dense matter. Until now, however, this diagnosis has been used for the study of dense matter with temperatures lower 100 eV or with temperatures above 1 keV. In this work, we have demonstrated the possibility of using K-shell emission spectroscopy for an intermediate temperature range of 100s eV to study dense plasma. Here we discuss an analysis of the hot dense matter emission spectra of a solid-state copper with temperatures up to a few hundred of eVs heated by laser-accelerated charged particles.

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X-ray absorption spectroscopy study of energy transport in foil targets heated by petawatt laser pulses

Cited by 18 publications

References 14 publications

Determining the short laser pulse contrast based on X-Ray emission spectroscopy

Determining the short laser pulse contrast based on X-Ray emission spectroscopy

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

Enhancement of K-shell spectroscopy for temperature measuring of isochorically heated matter in the sub-keV range

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