Heating and cooling of the multiply charged ion nonequilibrium plasma in a high-current extended low-inductance discharge

Burtsev, V. A.; Калинин, Н. В.

doi:10.1134/s1063784214090072

Cited by 5 publications

(1 citation statement)

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“…The numerical simulation of the active medium of a short wavelength laser based on plasma with multi-charged Ni-like Xe ions was carried out in several interconnected stages following the same principles as described earlier for the nitrogen and Ne-like argon discharge plasmas [13,14].…”

Section: Model Of Capillary Discharge Plasmamentioning

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: Model Of Capillary Discharge Plasmamentioning

confidence: 99%