Influence of the electrode system on the emission characteristics of a vacuum spark

Bashutin, O. A.; Alkhimova, M. A.; Vovchenko, E. D.; Dodulad, E I; Savelov, A. S.; Sarantsev, S. A.

doi:10.1134/s1063780x13110019

Cited by 19 publications

(4 citation statements)

References 15 publications

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“…In our experiments we used two modes with the capacity C 1 = 0.22 F and C 2 = 0.011 F. To increase the electric fi eld strength and the intensity of X-ray emission electrodes of conical shape were used [6]. A laser beam is focused on the Fe electrode target (Fig.…”

Section: Experimental Set-up and Resultsmentioning

confidence: 99%

The source of X-rays and high-charged ions based on moderate power vacuum discharge with laser triggering

et al. 2015

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Abstract. The source of X-ray radiation with the energy of quanta that may vary in the range h = 1÷12 keV was developed for studies in X-ray interaction with matter and modifi cation of solid surfaces. It was based on a vacuum spark discharge with the laser triggering. It was shown in our experiments that there is a possibility to adjust X-ray radiation spectrum by changing the confi guration of the electrode system when the energy stored in the capacitor is varied within the range of 1÷17 J. A comprehensive study of X-ray imaging and quanta energy was carried out. These experiments were carried out for the case of both direct and reverse polarity of the voltage on the electrodes. Additionally, ion composition of plasma created in a laser-triggered vacuum discharge was analyzed. Highly charged ions Zn (+21) , Cu (+20) and Fe (+18) were observed.

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Section: Experimental Set-up and Resultsmentioning

confidence: 99%

The source of X-rays and high-charged ions based on moderate power vacuum discharge with laser triggering

et al. 2015

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“…A number of papers are devoted to the study of the emission spectra of micropinches in the hard x-ray range at a wavelength λ<2 Å, i.e. with an energy greater than 6 keV (see, for instance, [1][2][3]).…”

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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“…The emission spectra of micropinches in the hard X-ray range at wavelengths λ < 2 Å were studied in many works (see, for example, [1][2][3]). Soft X-ray (SXR) sources in the wavelength range above 20 Å attract considerable recent interest due to their possible scientific and technological applications including nanolithography, investigations of the inner structure of biological objects, astrophysical studies, etc.…”

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confidence: 99%

Emission of a low-power laser-induced vacuum discharge plasma in the EUV and SXR spectral ranges

Rupasov

Romanov

Kologrivov

et al. 2018

EPJ Web of Conferences

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Abstract. X-ray spectral characteristics of a vacuum discharge plasma with the storage energy lower than 30 J initiated on an Al or a Fe cathode by a 10 12 W/cm 2 neodymium laser were studied in the 30 -300 Å wavelength range. It is shown that both the spectral composition and intensity of radiation of a micropinch plasma produced in the cathode jet of the discharge are determined by parameters of the discharge and laser pulse. These parameters were optimized to achieve a regime in which a considerable part of radiation energy was concentrated in the long-wavelength band of the quasi-continuum (230 -270 Å and 160 -200 Å for Al and Fe, respectively), which makes this discharge a source of narrowband X-ray radiation.It is known that local regions of a hot micron-scale plasma produced in a high-current vacuum discharge plasma due pinching (micropinches) are sources of intense electromagnetic radiation in a broad spectral range. The emission spectra of micropinches in the hard X-ray range at wavelengths λ < 2 Å were studied in many works (see, for example, [1-3]). Soft X-ray (SXR) sources in the wavelength range above 20 Å attract considerable recent interest due to their possible scientific and technological applications including nanolithography, investigations of the inner structure of biological objects, astrophysical studies, etc. [4][5][6][7]. At present, as sources of such pulsed radiation, laser plasmas are mainly used. An important parameter for applications of radiation sources is the SXR conversion efficiency from a storage electric energy. From this point of view, it is interesting to use micropinch radiation sources. It was shown earlier that in vacuum discharge plasma with the storage energy about 10 J initiated on a cathode by a low-power laser pulse, micropinches emitting SXRs in the wavelength region > 40 Å are formed. The plasma pinching process stability and micropinch parameters were controlled by the laser pulse parameters [8,9]. These results suggest the possibility of making a local source of intense SXR with a comparatively low energy deposition based on the laserinduced vacuum discharge.

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Influence of the electrode system on the emission characteristics of a vacuum spark

Cited by 19 publications

References 15 publications

The source of X-rays and high-charged ions based on moderate power vacuum discharge with laser triggering

The source of X-rays and high-charged ions based on moderate power vacuum discharge with laser triggering

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

Emission of a low-power laser-induced vacuum discharge plasma in the EUV and SXR spectral ranges

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