The X-ray radiation from cathode spot fragments in laser-induced vacuum discharges

Vogel, N.

doi:10.1109/27.782251

Cited by 2 publications

(1 citation statement)

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“…Such radiation is detected in high-current (with a current of the order of 100 kA), discharges at a voltage of a few tens of kilovolts with stored energy in the kilojoule range, which makes their technological application more difficult. More recent studies have shown that laser-initiated vacuum discharges with a voltage of only a few kilovolts [4][5][6] or even several hundred volts [7] and with a storage energy 10 J can serve as an x-ray source in the energy range 0.5-10 keV. Such discharges, in principle, can be used for various applications.…”

Section: Introductionmentioning

confidence: 99%

X-ray spectra of plasma radiation from laser induced low-power vacuum discharge

Romanov

Kologrivov

Paperny

et al. 2017

Plasma Phys. Control. Fusion

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The x-ray spectra of plasma radiation in the wavelength range 30-300 Å are studied. The radiation is emitted from plasma of a vacuum discharge with storage energy less than 30 J that is initiated on an Al or Fe cathode by beam from neodymium laser with a power density up to 10 12 W cm −2 . It is shown that both the spectral composition and intensity of radiation of hot micropinch plasma that is formed in the cathodic jet are determined by the set of the discharge and the laser pulse characteristics. By optimizing these characteristics, a mode of the discharge operation is attainable, in which a significant portion of the radiation energy is located in the long-wave band of the quasi-continuum (230-270 Å and 160-200 Å for Al and Fe cathodes, respectively). That makes it possible to treat such a discharge as an intense source of narrowband soft x-ray radiation.

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