Repetitively pulsed X-ray laser operating on the 3<i>p</i>— 3<i>s</i>transition of the Ne-like argon in a capillary discharge

Виноградов, А. В.; Rocca, J. J.

doi:10.1070/qe2003v033n01abeh002358

Cited by 21 publications

(4 citation statements)

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“…On the other hand, X-ray lasers pumped by the electrical discharge in capillaries have not advanced so much. In fact, the only operational device known is a capillary discharge Xray laser (CDXL) working at the wavelength of 46.9 nm based on Ne-like Ar 8+ ions [4]. All attempts to create a shorter wavelength CDXL have not been successful so far [5,6].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of Ni-like Xe plasma dynamics and laser gain in a low inductivity capillary discharge

Kalinin,

Feshchenko,

Artyukov

et al. 2019

Preprint

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X-ray lasers based on transitions in highly charged Ni-like ions generating in the "water window" wavelength range can be pumped by compact laboratory discharge sources. This makes them promising candidates for use as compact coherent X-ray sources in laboratory applications including biological imaging and investigations of carbon containing materials. In this paper, the results of numerical simulations of the plasma dynamics and kinetics in an X-ray laser based on transitions in Ni-like xenon ions are reported. The laser active medium is created by an extended low-inductive high current Z-discharge capable of producing two successive electrical pulses. The non-equilibrium multi-charged ion plasma dynamics is studied numerically using a non-stationary 1D two-temperature radiation-MHD model, which describes plasma hydrodynamics, non-stationary ionization, transfer of the continuum and line radiation as well as processes in the pumping electrical circuit. The ionic energy level populations are calculated in the quasi-stationary approximation. The simulation results allowed determination of the electrical and energy pumping parameters necessary to obtain a weak signal gain for the working transitions of the order of g + ∼ 1 cm −1 . It was demonstrated that plasma with the electronic temperature of more than 400 eV and the density of more than 10 19 cm −3 can be created by a low inductive two step discharge with peak current exceeding 200 kA.

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Section: Introductionmentioning

confidence: 99%

Numerical simulation of Ni-like Xe plasma dynamics and laser gain in a low inductivity capillary discharge

Kalinin,

Feshchenko,

Artyukov

et al. 2019

Preprint

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“…The output pulse energy of such a laser may reach ∼ 1 mJ. In the last few years, considerable efforts have been devoted to reduction of the laser size from the laboratory size to the table-top [6][7][8][9][10][11][12][13][14]. The beam profile typically has an annular or doughnut-like shape with a divergence angle ∼ 7 mrad.…”

Section: Introductionmentioning

confidence: 99%

Critical Parameters of the Pumping Scheme of Ar⁺⁸ Lasers Excited by Z Pinches in Long Capilaries

Szasz

Kiss

Sánta

et al. 2012

Contrib. Plasma Phys.

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The present study is focused on the demonstration of the most critical parameters of the pumping scheme of a table-top Ar +8 -laser excited by discharges with relatively low current and voltage (I ≤ 20 kA, U ≤ 200 kV) in long (L ∼ 0.5 m) capillaries. The most critical parameters of the pumping scheme were analyzed and then adjusted experimentally. The table-top size is attributed to the use of a low-inductance co-axial discharge configuration that decreases the voltage and current necessary for laser excitation. Low inductance is achieved by using a capillary, water-capacitor and water spark-gap placed into a chamber filled with deionized water. The capillary z-pinch is produced by the water capacitor, which is pulse-charged by a six-stage Marx generator, optimized for the low-inductance discharge configuration. Optimization is performed by adjusting the value of the charging inductance and the peak charging voltage with a water spark-gap. At the optimal conditions laser pulses with a Gaussian-like intensity distribution and divergence angle ∼ 1 mrad and energy ∼ 10 μJ are generated. The physical method for generation of a laser beam with such parameters is based on the use of a long (L = 0.45 m) capillary plasma.

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“…In this paper we expand the discussion on the damage mechanisms in Sc/Si ML mirrors based on the results of a detailed investigation of the structural changes in the irradiated mirrors. As in the case of the previous work, we take advantage of the unique characteristics of the capillary-discharge laser, which is at this point one of the brightest laser sources operating at 46.9 nm [45].…”

Section: Introductionmentioning

confidence: 99%

Mechanisms of radiation damage to Sc/Si multilayer mirrors under EUV laser irradiation

Pershyn¹,

Zubarev²,

Voronov³

et al. 2009

J. Phys. D: Appl. Phys.

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Specific structural changes in Sc/Si multilayer mirrors irradiated with extreme ultraviolet (EUV) laser single pulses (λ = 46.9 nm) at near damage threshold fluences (0.04-0.23 J cm −2 ) are analysed. We have identified melting of surface layers as the basic degradation mechanism for the mirrors. Both heat generation during silicide formation and low heat conduction of the layered system significantly decreases the degradation threshold of Sc/Si multilayer mirrors compared with bulk materials. The results are relevant to the use of the multilayer mirrors for shaping and directing the intense beams produced by the new generation of coherent EUV sources.

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Repetitively pulsed X-ray laser operating on the 3p— 3stransition of the Ne-like argon in a capillary discharge

Cited by 21 publications

References 20 publications

Numerical simulation of Ni-like Xe plasma dynamics and laser gain in a low inductivity capillary discharge

Numerical simulation of Ni-like Xe plasma dynamics and laser gain in a low inductivity capillary discharge

Critical Parameters of the Pumping Scheme of Ar⁺⁸ Lasers Excited by Z Pinches in Long Capilaries

Mechanisms of radiation damage to Sc/Si multilayer mirrors under EUV laser irradiation

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Repetitively pulsed X-ray laser operating on the 3p— 3stransition of the Ne-like argon in a capillary discharge

Cited by 21 publications

References 20 publications

Numerical simulation of Ni-like Xe plasma dynamics and laser gain in a low inductivity capillary discharge

Numerical simulation of Ni-like Xe plasma dynamics and laser gain in a low inductivity capillary discharge

Critical Parameters of the Pumping Scheme of Ar+8 Lasers Excited by Z Pinches in Long Capilaries

Mechanisms of radiation damage to Sc/Si multilayer mirrors under EUV laser irradiation

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Critical Parameters of the Pumping Scheme of Ar⁺⁸ Lasers Excited by Z Pinches in Long Capilaries