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Runaway electron preionized diffuse discharges in atmospheric pressure air with a point-to-plane gap in repetitive pulsed mode
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10.1063/1.3581066
/content/aip/journal/jap/109/8/10.1063/1.3581066
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/8/10.1063/1.3581066
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) (a) Photos of 4-cm gap for pulser 1 and (b) 2-mm gap for pulser 2.

Image of FIG. 2.
FIG. 2.

(Color online) (a) Waveforms of the applied voltage and discharge current. (pulser 1, applied voltage: 37.5 kV, gap spacing: 2 cm). (b) Waveform of the voltage pulse for pulser 2.

Image of FIG. 3.
FIG. 3.

(Color online) (a) Side view and (b) front-view images of the discharge (pulser 1, applied voltage: 37.5 kV, gap spacing: 2 cm, and frequency: 500 Hz).

Image of FIG. 4.
FIG. 4.

(Color online) Images of the discharge at different gap spacings: (a)–(c) side view and (d) front view (pulser 1, applied voltage: 37.5 kV, frequency: 100 Hz, gap spacing: (a) 2.5 cm, (b) 2 cm, and (c) and (d) 1.5 cm.

Image of FIG. 5.
FIG. 5.

(Color online) Side-view images of the discharge at different frequencies for one second (upper images) and for 200 pulses (lower images) (pulser 1, applied voltage: 37.5 kV, gap spacing: 2 cm).

Image of FIG. 6.
FIG. 6.

(Color online) Images of the discharge with negative (upper images) and positive (lower images) polarity of pulses at a frequency of 1 kHz [pulser 2, gap spacing: (a), (d) 0.5 mm, (b), (e) 1 mm, and (c), (f) 2 mm; the number of applied pulses is (a), (d), (e) 1, (b) 20, (c) 100, and (f) 5.]

Image of FIG. 7.
FIG. 7.

Images of the discharge with (a) positive and (b), (c) negative polarity in a pulse [pulser 3, gap spacing: (a), (b) 67 mm and (c) 22 mm].

Image of FIG. 8.
FIG. 8.

Autographs of the electron beam on the RF-3 film after a single shot with (a) negative polarity, and x-ray after (b) 530, (c) 870, and (d) 100 shots with positive polarity [pulser 3, gap spacing: (a) 11 mm, (b), (c) 0.4 mm, and (d) 4 mm, the cathode is a (a) tube, (b), (c) foil, and (d) grid, respectively].

Image of FIG. 9.
FIG. 9.

Emission spectra of the REP diffuse discharge in air (pulser 2; frequency: 1 kHz, gap spacing: 2 mm).

Image of FIG. 10.
FIG. 10.

Dependence of the radiation power density of the nitrogen second positive system in the UV region from the REP diffuse discharge on PRF (pulser 2, positive polarity of needle, gap spacing: 2 mm).

Image of FIG. 11.
FIG. 11.

(Color online) Discharge image for one pulse at pressure 2 atm [pulser 4, cathode (upper electrode) and anode form foil, gap spacing: 20 mm].

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/content/aip/journal/jap/109/8/10.1063/1.3581066
2011-04-29
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Runaway electron preionized diffuse discharges in atmospheric pressure air with a point-to-plane gap in repetitive pulsed mode
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/8/10.1063/1.3581066
10.1063/1.3581066
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