Some features of the directional pattern of ion emission from a micropinch discharge

Dolgov, A. N.; Klyachin, N. A.; Prokhorovich, D. E.

doi:10.1134/s1063784214120044

Cited by 5 publications

(6 citation statements)

References 7 publications

(16 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2 and Fig. 3 shows that the structure of the electron-ion beam emitted by the cathode is similar for the cases of Ti and W cathodes, and this structure has the form of concentric tubes and is similar to that observed earlier in works [1][2][3], but significantly smaller, micron, scale. At present, the mechanism of formation of the tubular structure of the beam is the subject of discussion.…”

Section: Resultssupporting

confidence: 79%

“…However, the above experimental results do not correspond to these estimates. Note that in experiments with high-current pinches [1,2], where the tubular structure of the plasma jet emitted by the cathode was also recorded, the ratio of the radii of the outer tubes was close to two unlike the estimate above.…”

Section: Resultsmentioning

confidence: 52%

“…One of the interesting and little studied phenomena recorded in pulsed vacuum discharges is the ring structure of the beam of electrons and accelerated ions of the cathode material emitted by the discharge towards the anode. In recent years, these beams consisting of a central filament surrounded by concentric annular beams have been found in high-current vacuum spark [1,2] and accelerators of relativistic electrons with a metal cathode [3]. In these experiments, the diameter of the central filament and the coaxial surrounding rings was a few millimeters [1,2] or centimeters [3].…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, these beams consisting of a central filament surrounded by concentric annular beams have been found in high-current vacuum spark [1,2] and accelerators of relativistic electrons with a metal cathode [3]. In these experiments, the diameter of the central filament and the coaxial surrounding rings was a few millimeters [1,2] or centimeters [3]. The mechanism of the formation of such structures remains a subject of discussion.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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

View full text Add to dashboard Cite

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.

show abstract

Section: Resultssupporting

confidence: 79%

Section: Resultsmentioning

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

View full text Add to dashboard Cite

show abstract

“…The complex structures of accelerated electron-ion beams consisting of a central filament surrounded by concentric annular beams was observed yet in early experiments with electron accelerators based on powerful plasma-focus discharges [17]. In recent years, similar structures have been found in high-current vacuum spark [18] and accelerators of relativistic electrons with a metal cathode [19]. In these experiments, the diameter of the central filament varies from one micron to about a millimeter, and ring structures from tens of microns to several centimeters.…”

Section: Experimental Details and Discussionmentioning

confidence: 82%

Collective acceleration of ions in picosecond pinched electron beams

Baryshnikov¹,

Paperny²,

Shipayev³

2017

J. Phys. D: Appl. Phys.

View full text Add to dashboard Cite

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.

show abstract