Vacuum arc with a distributed cathode spot as a plasma source for plasma separation of spent nuclear fuel and radioactive waste

Амиров, Р. Х.; Vorona, N. A.; Gavrikov, A. V.; Lizyakin, G; Polishchuk, V. P.; Samoilov, I. S.; Smirnov, V. P.; Usmanov, R. A.; Yartsev, I. M.

doi:10.1134/s1063780x15100013

Cited by 26 publications

(12 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Energy values showed in figure 4 were obtained excluding the ion charge state. According to work [3] in the studied discharge the double charged gadolinium ions appear in plasma at arc voltages above 6 V. In figure 5 there is a true ion energy dependence considering its average charge at arc current of 50 A [3]. The approximation of average ion charge versus arc voltage from [3] is shown in the upper right corner of figure 5.…”

Section: Methodsmentioning

confidence: 99%

“…According to work [3] in the studied discharge the double charged gadolinium ions appear in plasma at arc voltages above 6 V. In figure 5 there is a true ion energy dependence considering its average charge at arc current of 50 A [3]. The approximation of average ion charge versus arc voltage from [3] is shown in the upper right corner of figure 5. According to [9] ion kinetic energies in a contracted vacuum arc on a gadolinium cathode are higher than our mean values and reach 50 eV at arc voltage of 20 V and electron temperature of 1.7 eV.…”

Section: Methodsmentioning

confidence: 99%

“…Experimental studies of the vacuum arc with DCS on the thermionic gadolinium cathode have demonstrated that plasma generated by this discharge generally satisfied the mentioned requirements for the plasma separation technology [3]. However, the lack of values of ion energies prevents further development of this technology.…”

Section: Introductionmentioning

confidence: 99%

“…Values of free parameters M0 = 1.5, tg α = 0.05, Ti0 = 0.2 eV were selected to coincide with experimental data at the distance of 20 cm above the anode. Value φ0 = 10 В is selected for the corresponding arc regime, Te0 = 3 eV is selected according to the measured electron temperature within the discharge gap from [3].…”

Section: Estimations Of After Anode Arc Plasma Parametersmentioning

confidence: 99%

“…The main purpose of our work was to study an after anode plasma characteristics on the gadolinium cathode, including the dependence of ion energies on arc current and voltage. Also, it should be noted that properties of vacuum arcs on gadolinium and uranium cathode are quite similar [3].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Plasma jet characteristics in vacuum arc with diffused cathode spot

Амиров¹,

Vorona²,

Gavrikov³

et al. 2017

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

Abstract. Diffused vacuum arc, which is characterized by the absence of microparticles in cathode erosion products and by the irregular voltage oscillations, is considered to be a perspective plasma source for plasma reprocessing technology of spent nuclear fuel (SNF). The development of this technology requires data on ions energy in plasma jet. In this work parameters of plasma jet in diffused vacuum arc with a gadolinium cathode were studied by a retarding field analyzer, Langmuir and condensation probes. Gadolinium is regarded as a substance simulating SNF plasma. Ion energy spectrum was studied at arc currents of 30-75 A and voltages of 4-15 V at the distance of 20 cm above the arc anode. Dependencies of spectrum widths and most possible ion energies on arc voltages were obtained. The measured electron temperature was 2 eV, the maximum ion energy reached 70 eV. Experimental data were used to calculate adiabatic plasma expansion through the anode outlet.

show abstract

Section: Methodsmentioning

confidence: 99%