Experimental investigation of the plasma in a multichannel cathode

Babkin, G. V.; Mikhalev, V. G.; Morozov, E. P.; Потапов, А. В.

doi:10.1007/bf00858095

Cited by 6 publications

(4 citation statements)

References 5 publications

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“…The calculated dependences shown in Figs 7 and 8 are consistent with the following experimental results: (a) for the cathode in the form of tubes with lithium supply according to [3], U,, = 8-10V, T, x OSeV, n, =…”

Section: Comparison Of the Calculated Results With The Experimentalsupporting

confidence: 87%

“…The experimental and theoretical investigations of such cathodes have been reviewed by Zhukov et al [ 13. Cathodes in the form of tube packets with argon as the working medium have been investigated experimentally by Delcroix and Trindade [2], with lithium, by Babkin et al [3]. The experimental data for cathodes as wire packets have been obtained with argon by Kovalev et al [4] and with lithium, by Klimenko et al [5].…”

Section: Introductionmentioning

confidence: 99%

“…The dependences shown in Fig.7have two parts each, corresponding to the cases when the discharge fills all the hollows or only some of them. According to the calculations, in plasma-filled hollows, T, = 0.5-0.8 eV, ni =(1)(2)(3)(4)(5)…”

mentioning

confidence: 99%

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A mathematical model of multihollow cathode

Zverev¹

1993

Phys. Scr.

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A mathematical model of the multihollow cathode with the supply of the working medium at the axial magnetic field is considered. The processes taking place in the non-equilibrium multicomponent plasma in the hollows, the redistribution of the working medium flow rate over the channels, the partial transmission of electrons through the magnetic field at the walls, the anisotropy of the design characteristics and the decrease of the work function when the working medium is adsorbed on the walls have all been taken into consideration. A relation for the Richardson constant in the case of atom adsorption has been obtained, which is consistent with the experimental data. As a result, the cathode model is represented as a closed system of 54 equations. The calculated characteristics have been confirmed by experimental data.

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Section: Comparison Of the Calculated Results With The Experimentalsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

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A mathematical model of multihollow cathode

Zverev¹

1993

Phys. Scr.

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“…Research on cathode erosion has focused on microcosmic erosion mechanisms [17][18][19][20]. The formation and development of cathode spot in vacuum arc were well described in recent years [21,22].…”

Section: Introductionmentioning

confidence: 99%

Cathode erosion site distributions in an applied-field magnetoplasmadynamic thruster

Wang

Li³

et al. 2020

Plasma Sci. Technol.

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Erosion can influence cathode life, and is thus considered to be one of the main factors limiting the application of applied-field magnetoplasmadynamic thrusters. In this paper, erosion sites on graphite cathodes are studied so as to identify the influence of applied magnetic field and the ratio of propellant mass flow rate supplied from cathode and anode. The experiment results show that the application of applied magnetic field can significantly reduce the erosion rate of the cathode compared to that without magnetic field. The erosion sites on the cathode vary with the relative position of the convergent-divergent magnetic field, and are mainly distributed in the divergent part of the field. The erosion sites on the cathodes are found to be related to the propellant supply. The decreasing anode mass flow rate enlarges the range of erosion. These results are much helpful for the analysis of cathode erosion site location since they provide evidences of erosion mechanisms and point out the directions for further research.

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An experimental investigation of the effect of oxygen on the erosion of a multichannel tungsten cathode

Babkin¹,

Потапов²

1979

J Appl Mech Tech Phys

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Experimental investigation of the plasma in a multichannel cathode

Cited by 6 publications

References 5 publications

A mathematical model of multihollow cathode

A mathematical model of multihollow cathode

Cathode erosion site distributions in an applied-field magnetoplasmadynamic thruster

An experimental investigation of the effect of oxygen on the erosion of a multichannel tungsten cathode

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