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X-ray and runaway electron generation in repetitive pulsed discharges in atmospheric pressure air with a point-to-plane gap
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View: Figures


Image of FIG. 1.
FIG. 1.

Schematic diagram of the experimental setup and x-ray detection.

Image of FIG. 2.
FIG. 2.

Waveforms of applied voltage and discharge current (a) single mode, and (b) time-reduced consecutive mode.

Image of FIG. 3.
FIG. 3.

(Color online) Pattern of the diffuse discharge in the open air (a) side view, and (b) front view.

Image of FIG. 4.
FIG. 4.

The dependence of measured x-ray counts on the pulse repetition frequency.

Image of FIG. 5.
FIG. 5.

Schematic of the diode for second generator: (1, "I") dosimeters, (2) additional screen from Al foil or plate from Pb, (3) case of gas diode (anode for open gas diode), (4) AlBe foil with thickness 45 μm (anode for gas diode), (5) tube cathode from steel foil with thickness 100 μm, (6) gas diode insulator, (7) transmission line body, and (8) central conductor.

Image of FIG. 6.
FIG. 6.

(Color online) (a) Pattern of the volume discharge in the open diode with cathode 2 after one shot, and (b) after ten shots.Second generator. Gas diode is two.

Image of FIG. 7.
FIG. 7.

(Color online) Waveforms of the (a, b, c) voltage pulses and (d) beam electron current at a low pulse repetition rate (second generator).

Image of FIG. 8.
FIG. 8.

(a) Dependences of the x-ray exposure dose on the pulse repetition rate, and (b) on the number of pulses in pulse train.(a) The cathode-to-anode spacing in gas diode d =  11.9 mm, measurements by a Victoreen dosimeter from 100 pulses for each points; (b) open gas diode, measurements by the Arrow-Tech dosimeter (1) and Victoreen dosimeter (2).

Image of FIG. 9.
FIG. 9.

X-ray exposure dose (over 150 pulses) vs. pulse repetition rate for the open gas diode with cathode (a) 1, and (b) 2. Measurements by a Victoreen dosimeter.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: X-ray and runaway electron generation in repetitive pulsed discharges in atmospheric pressure air with a point-to-plane gap