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Space- and time-resolved characterization of nanosecond time scale discharge at pressurized gas
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10.1063/1.3573507
/content/aip/journal/jap/109/7/10.1063/1.3573507
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/7/10.1063/1.3573507
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) 1 ns HV pulse, (b) 5 ns HV pulse. Cathode-anode gap is 2 cm in length. Background gas: air at pressure of 105 Pa. Cathode: stainless steel blade 10 mm in width.

Image of FIG. 2.
FIG. 2.

(a) Diode configuration for light and x-ray diagnostics, (b) diode configuration for optical imaging diagnostics, (c) diode configuration for RAE beam diagnostics. 1- transmission line, 2- insulator, 3- cathode, 4- windows, 5- Ta foil, 6- Al foil, 7- plastic scintillator, 8- PMT, 9- anode, 10- fast-framing camera.

Image of FIG. 3.
FIG. 3.

Light emission evolution across a 1.5 cm AK gap at air pressure of 105 Pa, 1 ns duration HV pulse. Frame duration - 1.5 ns. The time delay of the frame beginning with respect to the appearance of light at the cathode in nanoseconds: (a) 0, (b) 0.1, (c) 0.5, (d) 0.6, and (e) 0.8.

Image of FIG. 4.
FIG. 4.

Light emission evolution across 1.5 cm AK gap at air pressure of 3 × 105 Pa, 1 ns duration HV pulse. Frame duration - 1.5 ns. The time delay of the frame beginning with respect to the appearance of light at the cathode in nanoseconds: (a) 0, (b) 0.3, (c) 1.5, (d) 1.7, (e) 3.1, (f) 4, (g) 6.4, (h) 6.7, (i) 6.9, and (j) 7.8.

Image of FIG. 5.
FIG. 5.

(Color online). Dependence of light emission front propagation velocity on air pressure and AK gap length for (a) 1 ns and (b) 5 ns HV generator pulse durations.

Image of FIG. 6.
FIG. 6.

Secondary plasma channel light emission dynamics. The discharge is supplied by a 5 ns duration high-voltage pulse. Air pressure – 105 Pa, AK gap length - 2.5 cm. Frame duration - 1.5 ns. The time delay of the frame beginning with respect to the appearance of light at the cathode in nanoseconds: (a) 2.1; (b) 2.3; (c) 2.8; (d) 3.8.

Image of FIG. 7.
FIG. 7.

(Color online). RAE energy distribution function for 1 ns HV pulse. AK gap is 1 cm, air pressure is 105 Pa. Intensity of the recorded images vs Al foil thickness is shown in the insert.

Image of FIG. 8.
FIG. 8.

(Color online). RAE energy distribution function for 1 ns HV pulse obtained from the x-rays analysis. AK gap is of 1 cm, air pressure of 105 Pa. Intensity of the PMT signal vs Al foil thickness is shown in the inset.

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/content/aip/journal/jap/109/7/10.1063/1.3573507
2011-04-12
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Space- and time-resolved characterization of nanosecond time scale discharge at pressurized gas
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/7/10.1063/1.3573507
10.1063/1.3573507
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