On electron temperature in the cathode plasma of a pulse vacuum discharge

Baryshnikov, V. I.; Paperny, V. L.

doi:10.1088/0022-3727/28/12/019

Cited by 19 publications

(4 citation statements)

References 7 publications

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“…The experiments are performed with a small-size electron accelerator [13], which is an essentially modified version previously used in [11,12]. The needle cathode with an apex angle of about 1° is manufactured of a titanium or tungsten rod with a diameter of 1.5 mm.…”

Section: Experimental Details and Discussionmentioning

confidence: 99%

“…Earlier, the authors investigated the features of the formation of dense electron beams in a low-impedance high-current electron accelerator with an energy of 300 keV, pulse duration <1 ns, and a current of about 4 kA [11,12]. It has been found that near the needle-like tungsten cathode, an area of hot plasma was formed that produced an electron beam travelling a distance of the order of a centimeter in the vacuum gap between the cathode and the anode foil in the form of filaments less than 20 µm in diameter.…”

Section: Introductionmentioning

confidence: 99%

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Collective acceleration of ions in picosecond pinched electron beams

Baryshnikov¹,

Paperny²,

Shipayev³

2017

J. Phys. D: Appl. Phys.

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Сharacteristics of intense electron-ion beams emitted by a high-voltage (280 kV) electron accelerator with a pulse duration of 200 ps and current 5 kA are studied. The capture phenomena and the subsequent collective acceleration of multi charged ions of the cathode material by the electric field of the electron beam are observed. It is shown that the electronion beam diameter does not exceed 30 µm therein in the case of lighter ions, and the decay of the pinched beam occurs at a shorter distance from the cathode. It is established that the ions of the cathode material Ti n+ captured by the electron beam are accelerated up to an energy of ⩽10 MeV, and the ion fluence reaches 10 17 ion cm −2 in the pulse. These ions are effectively embedded into the lattice sites of the irradiated substrate (sapphire crystal), forming the luminescent areas of the micron scale.

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Section: Experimental Details and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Collective acceleration of ions in picosecond pinched electron beams

Baryshnikov¹,

Paperny²,

Shipayev³

2017

J. Phys. D: Appl. Phys.

Self Cite

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“…The experiments are performed with a small-size electron accelerator, which is an essentially modified version previously used in [5,6]. The needle cathode with an apex angle of about 1° is manufactured of a titanium or tungsten rod with a diameter of 1.5 mm.…”

Section: Experimentalsmentioning

confidence: 99%

Ring structure of electron-ion beams ejected by a picosecond high-current electron accelerator

Baryshnikov¹,

Paperny²,

Chernyh³

2022

8th International Congress on Energy Fluxes and Radiation Effects

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The results of a study of the parameters of the radial structure of electron-ion beams emitted by a high-voltage vacuum discharge with an extremely high energy deposition rate > 5×1013 A/s are presented. An analysis of the structure of beam imprints on the irradiated anode foil, as well as traces of erosion on the crystalline substrate obtained by the authors earlier, showed that there are rings on a scale of tens of microns, and the energy of accelerated electrons in the central part of the beam is much higher than in the peripheral rings. A possible mechanism providing the observed beam structure is considered.

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“…Also, electron heating at a high-voltage pulse vacuum discharge with a rather high current rise rate has been studied in [86]. The discharge parameters were as follows: the initial interelectrode voltage was 250 kV, the peak current was about 5 kA and its duration was less than 1 ns; hence the current rise rate exceeded 10 13 A s −1 .…”

Section: Plasma Heating and Production Of The Multiply Charged Ionsmentioning

confidence: 99%

Pinch effect in vacuum arc plasma sources under moderate discharge currents

Krinberg¹,

Paperny²

2002

J. Phys. D: Appl. Phys.

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An analysis of a wide set of events, which have been observed in cathode plasma jet of vacuum arcs and sparks, is presented. In particular, they are (i) the substantial decrease of cross-section of cathode jet in a steady-state vacuum arc far from the cathode, (ii) the appearance of high charge states of ions under discharge current increase and pulse duration decrease and (iii) the significant enhancement of the energy of ions in cathode plasma jet with increase of the current rise rate and of the interelectrode gap length. We concluded that these effects, revealed within a wide range of discharge parameters, are similar in nature and could be explained by cathode plasma jet pinching out of the near-cathode region. This qualitative conclusion was supported by quantitative estimation of magnetic compression influence on plasma properties. Such estimations were obtained from theoretical models which have been developed to describe both the steady-state jet and a jet with increasing current.

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On electron temperature in the cathode plasma of a pulse vacuum discharge

Cited by 19 publications

References 7 publications

Collective acceleration of ions in picosecond pinched electron beams

Collective acceleration of ions in picosecond pinched electron beams

Ring structure of electron-ion beams ejected by a picosecond high-current electron accelerator

Pinch effect in vacuum arc plasma sources under moderate discharge currents

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