Registration of accelerated multiply charged ions from the cathode jet of a vacuum discharge

Artamonov, Maxim; Krasov, V. I.; Paperny, V. L.

doi:10.1134/1.1435742

Cited by 16 publications

(11 citation statements)

References 6 publications

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“…The dependence of velocities of both ion components on I d are shown in figure 3. Also, in the figure we presented the same dependence for average velocity of the fast and multiple charged ions, which have been found previously in our works [8,9]. We obtained this dependence from the data of our previous measurements with the energy ion analyser by procedure as follows.…”

Section: Resultssupporting

confidence: 61%

“…We will show below that the fast ions are the multiple charged and accelerated ions, which we have found previously [8,9]. It was found that the ions were produced during a time interval of less than 100 ns length, which lied approximately at 200-500 ns after the discharge onset.…”

Section: Resultsmentioning

confidence: 54%

“…Also, note that in our first experiments, which were performed at the relatively high pressure of the residue gases, of about 2 × 10 −4 Torr, we observed just ions of the cathode material at low charge states, namely Cu + , Cu +2 at the same discharge parameters [17]. It was decrease in the pressure down to (5-7) × 10 −6 Torr in subsequent experiments that permits us to observe the ions at high charge states, up to Cu +19 [9]. These results support our suggestion that decrease in charge states of ions of the cathode jet in the given experiment also takes place due to the jet propagation inside of the drift tube and the decrease is due just to charge exchange at the residue gases atoms.…”

Section: Discussionmentioning

confidence: 72%

“…The maximum and the average charge states for copper ions ranged up to Z max = +19 and Z = +9, respectively, at the discharge current of 10 kA [8]. Maximum energies of the ions reach E max ≈ 150 keV [9]. The experiments also showed that there were two groups of ions in the cathode plasma jet of the discharge.…”

Section: Introductionmentioning

confidence: 88%

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Flow of multiple charged accelerated metal ions from low-inductance vacuum spark

Gorbunov¹,

Krasov²,

Paperny³

et al. 2006

J. Phys. D: Appl. Phys.

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Results of studies of the short-run beams of multiple charged fast ions that have been found earlier by the authors in a low voltage vacuum spark are presented. The ion emission was due to the formation of micropinches in the cathode plasma jet by the action of the self-magnetic field. A relation between the average velocity of the fast ions and that of the bulk of the ions of the cathode jet was obtained over a wide range of the discharge current amplitudes. The total yield of the multiple charged fast ions per pulse Nf was evaluated from the direct collector measurements with regard to a decrease in ion flow due to several reasons. This value was in satisfactory agreement with evaluation that was obtained from the ballistic pendulum measurements and gave Nf ≈ 5 × 1013–1014 ions per pulse at the average ion charge state of +9 at the maximum of the discharge current Id = 12 kA. Evaluation of current density for these ions gave jf ≈ 3 mA cm−2 at a distance of about 1 m from the anode.

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Section: Resultssupporting

confidence: 61%

Section: Resultsmentioning

confidence: 54%

Section: Discussionmentioning

confidence: 72%

Section: Introductionmentioning

confidence: 88%

See 2 more Smart Citations

Flow of multiple charged accelerated metal ions from low-inductance vacuum spark

Gorbunov¹,

Krasov²,

Paperny³

et al. 2006

J. Phys. D: Appl. Phys.

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“…Characteristics of the ion jets in a number of experiments here were closed to ones obtained in arcs. In this work we present results of the detailed timeof-flight measurements of both the fast and the slow ion components revealed earlier in [8]. Subject of the studies is to establish characteristics of the additional ion acceleration in order to control parameters ofthe ion beam.…”

Section: Introductionmentioning

confidence: 97%

Two-components ion flow in a low voltage vacuum spark

Gorbunov

Krasov

Paperny

et al. 2004

XXIst International Symposium on Discharges and Electrical Insulation in Vacuum, 2004. Proceedings. ISDEIV.

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Ion velocities in cathode plasma flow of a low voltage vacuum spark have been studied experimentally for peak discharge currents of 1 -10 kA. Experiments have been performed using the time-of-flight technique at different ranges of ion collector from the discharge gap. It is shown that there are t w o ion components in the cathode flow. The slow one presents the bulk of ion distribution and at low peak discharge current its velocity is closed to the convenient value for vacuum arc. The fast components' velocity is a few times higher than one for slow ions and amplitude of current for these ions at a range of 10 cm from the discharge gap was closed to one for the slow component. As the distance increases, peak of the fast ions decreases sharper than one for the slow component. Amplitudes of signals and mean velocities of both ion components increase sharply with the discharge current. The fast ion component corresponds, apparently, to beam of the multiply charged ions that had been found by the authors earlier. Total amount of these ions attains, approximately, IO" ions per a pulse.

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Cathode Spot Jets. Velocity and Ion Current

Beilis

2020

Plasma and Spot Phenomena in Electrical Arcs

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Registration of accelerated multiply charged ions from the cathode jet of a vacuum discharge

Cited by 16 publications

References 6 publications

Flow of multiple charged accelerated metal ions from low-inductance vacuum spark

Flow of multiple charged accelerated metal ions from low-inductance vacuum spark

Two-components ion flow in a low voltage vacuum spark

Cathode Spot Jets. Velocity and Ion Current

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