X-ray spectroscopy diagnostic of a plasma produced by femtosecond laser pulses irradiating a cluster target

Skobelev, I. Yu.; Faenov, A. Ya.; Magunov, A. I.; Pikuz, T. A.; Boldarev, A. S.; Gasilov, V. A.; Abdallach, J.; Junkel-Vives, G. C.; Auguste, T.; Dobosz, S.; D’Oliveira, P.; Hulin, S.; Monot, P.; Blasco, F.; Dorchies, F.; Caillaud, T.; Bonte, C.; Stenz, C.; Salin, F.; Loboda, P. A.; Litvinenko, Igor; Popova, V. V.; Baidin, G. V.; Sharkov, B.

doi:10.1134/1.1484990

Cited by 29 publications

(5 citation statements)

References 30 publications

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“…Actually this was the first evidence that ionization dynamics in clusters under strong field conditions significantly differs from the behavior of atomic targets. The enhanced x-ray emission disappears when the clusters are destroyed by a weaker pre-pulse (Skobelev et al, 2002). The major contribution of the x-ray photons is emitted on the ns time scale (Ditmire et al, 1995;Kondo et al, 2002;Larsson and Sjögren, 1999), which is comparable to recombination lifetimes.…”

Section: Soft X-ray and Euv Emissionmentioning

confidence: 99%

Laser-driven nonlinear cluster dynamics

et al. 2010

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Laser excitation of nanometer-sized atomic and molecular clusters offers various opportunities to explore and control ultrafast many-particle dynamics. Whereas weak laser fields allow the analysis of photoionization, excited-state relaxation, and structural modifications on these finite quantum systems, large-amplitude collective electron motion and Coulomb explosion can be induced with intense laser pulses. This review provides an overview of key phenomena arising from laser-cluster interactions with focus on nonlinear optical excitations and discusses the underlying processes according to the current understanding. A brief general survey covers basic cluster properties and excitation mechanisms relevant for laser-driven cluster dynamics. Then, after an excursion in theoretical and experimental methods, results for single- and multiphoton excitations are reviewed with emphasis on signatures from time- and angular resolved photoemission. A key issue of this review is the broad spectrum of phenomena arising from clusters exposed to strong fields, where the interaction with the laser pulse creates short-lived and dense nanoplasmas. The implications for technical developments include the controlled generation of ion, electron, and radiation pulses, as will be addressed along with corresponding examples. Finally, future prospects of laser-cluster research as well as experimental and theoretical challenges are discussed.Comment: text and figures revise

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Section: Soft X-ray and Euv Emissionmentioning

confidence: 99%

Laser-driven nonlinear cluster dynamics

et al. 2010

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“…The lattice temperature of the nanoparticles was also inferred from the absorption profiles to be over 4000 K near the surface of the target at 30 ns after ablation by nanosecond laser pulses. Skobelev et al used XES to study laser-irradiated Ar cluster targets [146]. The average number of atoms in the clusters ranged from 2 × 10 5 to 2 × 10 7 .…”

Section: Plumes From Laser Vaporizationmentioning

confidence: 99%

More power to X‐rays: New developments in X‐ray spectroscopy

Guo¹

2009

Laser & Photonics Reviews

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Recent developments in X-ray spectroscopy in the last decade are reviewed. A specific emphasis is placed on displaying the strong natural connection between X-ray spectroscopy and materials science. Brief explanations of several X-ray spectroscopic methods are given. X-ray spectroscopic instruments such as table-top X-ray sources are discussed in detail, whereas those employing synchrotron and other sources are briefly addressed. The spectroscopic methods and results from materials investigations are reviewed according to their positions in a 3D parameter space of time, length, and energy. New experimental measurements on atoms, molecules, nanomaterials, and bulk materials that include insulators, semiconductors, metals and magnetic materials using both static and time-resolved methods are reviewed.A typical table-top experimental setup to probe a sample using an optical pump (green color beam) -X-ray probe (purple color beam) technique. The X-ray pulses are produced by femtosecond optical pulses. Two exemplary data are displayed: One is direct imaging of plasmas generated from laser evaporation of a solid target (Imaging data) and the other is an X-ray absorption spectrum of a nickel sample (USEXAS data).

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“…X-ray emission spectra of highly charged K-shell ions are a unique diagnostic tool that can be used to measure macroscopic plasma parameters such as the temperature, density, velocity, degree of ionization, etc., of the plasma (see, e.g., [4][5][6][7][8][9][10][11][12][13][14]).…”

Section: Introductionmentioning

confidence: 99%

“…This experimental data contains a considerable amount of information about the plasma parameters under investigation, and in many cases do not require ultra-high spectral resolution of the diagnostic equipment. (see, for example, reviews [7,8]).…”

Section: Introductionmentioning

confidence: 99%

The Role of Collision Ionization of K-Shell Ions in Nonequilibrium Plasmas Produced by the Action of Super Strong, Ultrashort PW-Class Laser Pulses on Micron-Scale Argon Clusters with Intensity up to 5 × 1021 W/cm2

Skobelev,

Ryazantsev,

Kulikov

et al. 2023

Photonics

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The generation of highly charged ions in laser plasmas is usually associated with collisional ionization processes that occur in electron–ion collisions. An alternative ionization channel caused by tunnel ionization in an optical field is also capable of effectively producing highly charged ions with ionization potentials of several kiloelectronvolts when the laser intensity q > 1020 W/cm2. It is challenging to clearly distinguish the impacts of the optical field and collisional ionizations on the evolution of the charge state of a nonequilibrium plasma produced by the interaction of high-intensity, ultrashort PW-class laser pulses with dense matter. In the present work, it is shown that the answer to this question can be obtained in some cases by observing the X-ray spectral lines caused by the transition of an electron into the K-shell of highly charged ions. The time-dependent calculations of plasma kinetics show that this is possible, for example, if sufficiently small clusters targets with low-density background gas are irradiated. In the case of Ar plasma, the limit of the cluster radius was estimated to be R0 = 0.1 μm. The calculation results for argon ions were compared with the results of the experiment at the J-KAREN-P laser facility at QST-KPSI.

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X-ray spectroscopy diagnostic of a plasma produced by femtosecond laser pulses irradiating a cluster target

Cited by 29 publications

References 30 publications

Laser-driven nonlinear cluster dynamics

Laser-driven nonlinear cluster dynamics

More power to X‐rays: New developments in X‐ray spectroscopy

The Role of Collision Ionization of K-Shell Ions in Nonequilibrium Plasmas Produced by the Action of Super Strong, Ultrashort PW-Class Laser Pulses on Micron-Scale Argon Clusters with Intensity up to 5 × 1021 W/cm2

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