NEXAFS at nitrogen K-edge and titanium L-edge using a laser-plasma soft x-ray source based on a double-stream gas puff target

Wachulak, P.; Duda, Martin; Bartnik, A.; Węgrzyński, Łukasz; Fok, Tomasz; Fiedorowicz, Henryk

doi:10.1063/1.5085810

Cited by 14 publications

(15 citation statements)

References 30 publications

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“…The experiments with the synchrotron radiation offer the most versatile controlling of the wavelength. By its [27], (7) [41,42], and (8) e.g., ΔE = 20 − 280 eV [36], ΔE = 250 − 3000 eV [43], XCT approach Δ (nm) Axial (3) resolution Photon flux (ph/s) Comments High flux widely tunable energy range 4.43 -2.34 7 (5) nature, the synchrotron radiation typically delivers monochromatic radiation ranging from VUV to hard X-ray at high flux ( 10 11 ph/s).…”

Section: Discussionmentioning

confidence: 99%

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Coherence tomography with broad bandwidth extreme ultraviolet and soft X-ray radiation

et al. 2021

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We present an overview of recent results on optical coherence tomography with the use of extreme ultraviolet and soft X-ray radiation (XCT). XCT is a cross-sectional imaging method that has emerged as a derivative of optical coherence tomography (OCT). In contrast to OCT, which typically uses near-infrared light, XCT utilizes broad bandwidth extreme ultraviolet (XUV) and soft X-ray (SXR) radiation (Fuchs et al in Sci Rep 6:20658, 2016). As in OCT, XCT’s axial resolution only scales with the coherence length of the light source. Thus, an axial resolution down to the nanometer range can be achieved. This is an improvement of up to three orders of magnitude in comparison to OCT. XCT measures the reflected spectrum in a common-path interferometric setup to retrieve the axial structure of nanometer-sized samples. The technique has been demonstrated with broad bandwidth XUV/SXR radiation from synchrotron facilities and recently with compact laboratory-based laser-driven sources. Axial resolutions down to 2.2 nm have been achieved experimentally. XCT has potential applications in three-dimensional imaging of silicon-based semiconductors, lithography masks, and layered structures like XUV mirrors and solar cells.

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Section: Discussionmentioning

confidence: 99%

“…They require relatively low-cost and very stable nanosecond drivers. These sources deliver enough photons ( 10 10 ph/s) in the water window to enable laboratory-sized SXR imaging [41,42]. Further increasing of the photon flux of LPS sources can be realized using high-repetition rate nanosecond drivers.…”

Section: Discussionmentioning

confidence: 99%

Coherence tomography with broad bandwidth extreme ultraviolet and soft X-ray radiation

et al. 2021

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“…The input parameters of laser and double gas-puff stream in Fig. 1 are chosen according to the experiments performed at the Institute of Optoelectronics at MUT in Warsaw [32]. The gas streams are approximated by gas layers.…”

Section: Modeling Of Double-stream Gas Puff With Zstar Codementioning

confidence: 99%

“…10 Spatial distribution of emittance in SXR radiation wavelength band 2.8867 < λ < 3.234 nm: a an instant value at a moment of peak emission t = 3.787ns in MW/cm 3 , b a time-integrated value in J/cm 3 for 600 m J : 3ns : 4.15 TW/cm 2 laser pulse. The negative values correspond to the reabsorption erably contributing into hard water-window waveband [32,33]. The SXR radiation in 2.47-3.234 nm waveband is emitted from krypton plasma by ions from Kr XVIII to Kr XXIII.…”

Section: Nanosecond Laser Plasma Dynamicsmentioning

confidence: 99%

Theoretical study of soft X-ray emission and dynamics of laser-induced plasma of double stream gas puff

Zakharov

Захаров

2021

Eur. Phys. J. D

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The double stream gas puff-based laser-produced plasma is studied as a source of soft X-ray radiation in nm wavelength spectral range. Dynamics of plasma induced by Nd:YAG laser beam and its emission is simulated with radiation-magnetohydrodynamic code Zstar. The modeling results for krypton gas stream in an annular helium jet as a circumferential gas for various picosecond and nanosecond laser pulses corresponding to the experiments are presented. The spatial–spectral features and temporal behavior of the soft X-ray and EUV emission are investigated. Under ps pulse, the gas is rapidly ionized in the laser beam channel, but it does not have enough time to shift sensibly during the pulse, and the plasma electron density grows against the background of almost constant ion density during the ionization in the laser radiation field. There is ionization instability only capable to be developed in ps range. At ns pulse, the gas ionization and heating leads to gas pushing out of the channel, and the formation of a divergent compression wave transforming into the shock wave. Behind the compression wave front, conditions arise for the development of Rayleigh–Taylor-type instability. The instability leads to the redistribution of plasma temperature and density, and to the formation of increased soft X-ray emission spots. Time evolution of spatial distributions and spectral characteristics of emitted SXR radiation is analyzed for different laser pulses. Transient effects in multicharged ion plasma are discussed, fundamental understanding of those is required for optimization of plasma radiation source. A conversion efficiency of laser energy into soft X-ray wavebands from krypton plasma is scanned by laser parameters and analyzed.

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“…Although, there has been considerable progress in the development of laboratoryscale so X-ray sources, such as laser-or discharge-produced plasmas [2][3][4][5][6][7][8] and high-order harmonics (HHG), 9-12 these sources have been employed for NEXAFS spectroscopy only a few times until now. [13][14][15][16][17][18][19] In addition, except for previous own work including pump-probe experiments 20 and investigations with samples at atmospheric pressure, 21 all these measurements were restricted to photon energies below 500 eV. Recently, Popmintchev et al 22 demonstrated NEXAFS investigations at the Kand L-absorption edges of solids in the near-keV range using a HHG source, ideally suited for dynamic probing of materials on an attosecond time scale.…”

Section: Introductionmentioning

confidence: 99%

Laboratory-scale near-edge X-ray absorption fine structure spectroscopy with a laser-induced plasma source

Müller

Schellhorn

Mann

2019

J. Anal. At. Spectrom.

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NEXAFS at nitrogen K-edge and titanium L-edge using a laser-plasma soft x-ray source based on a double-stream gas puff target

Cited by 14 publications

References 30 publications

Coherence tomography with broad bandwidth extreme ultraviolet and soft X-ray radiation

Coherence tomography with broad bandwidth extreme ultraviolet and soft X-ray radiation

Theoretical study of soft X-ray emission and dynamics of laser-induced plasma of double stream gas puff

Laboratory-scale near-edge X-ray absorption fine structure spectroscopy with a laser-induced plasma source

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