Adhesion of Copper Surface Treated by Runaway Electron Preionized Diffuse Discharge

AbstractThe parameters of X-ray radiation and runaway electron beams (RAEBs) generated at long-pulse discharges in atmospheric-pressure air were investigated. In the experiments, high-voltage pulses with the rise times of 500 and 50 ns were applied to an interelectrode gap. The gap geometry provided non-uniform distribution of the electric field strength. It was founded that at the voltage pulse rise time of 500 ns and the maximum breakdown voltage Um for 1 cm-length gap, a duration [full width at half maximum (FWHM)] of a RAEB current pulse shrinks to 0.1 ns. A decrease in the breakdown voltage under conditions of a diffuse discharge leads to an increase in the FWHM duration of the electron beam current pulse up to several nanoseconds. It was shown that when the rise time of the voltage pulse is of 500 ns and the diffuse discharge occurs in the gap, the FWHM duration of the X-ray radiation pulse can reach ≈100 ns. It was established that at a pulse-periodic diffuse discharge fed by high-voltage pulses with the rise time of 50 ns, an energy of X-ray quanta and their number increase with increasing breakdown voltage. Wherein the parameter Um/pd is saved.

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lasing in nitrogen pumped by a runaway-electron-preionised diffuse discharge

Quantum Electronics ◽

10.1070/qe2009v039n12abeh014112 ◽

2009 ◽

Vol 39 (12) ◽

pp. 1107-1111 ◽

Cited By ~ 6

Author(s):

E Kh Baksht ◽

A G Burachenko ◽

Viktor F Tarasenko

Keyword(s):

Runaway Electron ◽

Diffuse Discharge

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Dynamics of titanium surface characteristics after its treatment by runaway electron preionized diffuse discharge

Journal of Physics Conference Series ◽

10.1088/1742-6596/830/1/012090 ◽

2017 ◽

Vol 830 ◽

pp. 012090 ◽

Cited By ~ 1

Author(s):

M A Shulepov ◽

M V Erofeev ◽

V S Ripenko ◽

V F Tarasenko

Keyword(s):

Titanium Surface ◽

Runaway Electron ◽

Surface Characteristics ◽

Diffuse Discharge

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Effect of ultraviolet irradiation or diffuse discharge plasma on structure and surface electrical charge of micro-arc calcium phosphate coatings

Journal of Physics Conference Series ◽

10.1088/1742-6596/2064/1/012077 ◽

2021 ◽

Vol 2064 (1) ◽

pp. 012077

Author(s):

E G Komarova ◽

E A Kazantseva ◽

V S Ripenko ◽

A Zharin ◽

Y P Sharkeev

Keyword(s):

Uv Irradiation ◽

Runaway Electron ◽

Discharge Plasma ◽

Amorphous Structure ◽

Electrical Charge ◽

X Ray ◽

Diffuse Discharge ◽

Phosphate Coatings ◽

Micro Arc Oxidation ◽

Calcium Phosphate Coatings

Abstract The studies of the effect of ultraviolet (UV) irradiation and plasma of a runaway electron preionized diffuse discharge (REP DD) post-treatments on the surface structure and electrical charge of the micro-arc oxidation (MAO) coatings were performed. The UV irradiation and plasma treatment did not effect on the morphology, roughness and thickness of the MAO coatings. However, these post-treatments led to formation of the small fraction of the crystalline CaHPO4phase in the X-ray amorphous structure of the coatings. Moreover, the UV and REP DD plasma treatments increased the electrostatic potential (EP) negative values from –85 mV to –126 mV of the coatings in the following order: MAO < MAO/UV (for 5 min) < MAO/Plasma (with 10,000 pulses) < MAO/UV (for 20 min) < MAO/Plasma (with 80,000 pulses).

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