File:Electrical discharges in xenon at various pressures.ogv
Original file (Ogg multiplexed audio/video file, Theora/Vorbis, length 37 min 21 s, 1,280 × 720 pixels, 3.7 Mbps overall, file size: 988.44 MB)
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[edit]DescriptionElectrical discharges in xenon at various pressures.ogv |
English: Xenon is beloved by plasma artists for its vivid white arcs. It is the main constituent gas in most commercial plasma globe toys. (It's a shame it's so costly!) In this video, a one-liter glass flask fitted with an electrode is evacuated on a high vacuum pumping station and then incrementally pressurized with pure xenon while a high-voltage RF discharge is passed through it. At the end, I seal off the flask from the pumps. Nothing is redacted, so it's a long and at times boring video. For viewers' benefit, here are some quick links to the plasma at various pressures:
(5:08) High vacuum, residual gases at a few millitorr pressure; glass fluoresces (6:50) Estimated pressure is 0.5 torr xenon (7:24) 24.5 inHg = 38 torr xenon (7:53) 23.5 inHg = 64 torr xenon (9:00) 22.5 inHg = 89 torr xenon (10:08) 21.8 inHg = 107 torr xenon (11:46) 21.0 inHg = 127 torr xenon (12:45) 19.8 inHg = 157 torr xenon (13:47) 18.5 inHg = 191 torr xenon (15:09) 17.5 inHg = 216 torr xenon (16:15) 15.5 inHg = 267 torr xenon (17:14) 14.0 inHg = 305 torr xenon (18:03) 13.0 inHg = 330 torr xenon (19:05) 7.5 inHg = 470 torr xenon (20:28) 6.0 inHg = 508 torr xenon (21:24) 2.0 inHg = 610 torr xenon (21:28) With the HV power on, I begin pumping out the flask with the vacuum system so we can see some of the effects again as the pressure drops. (28:30) 25 inHg = 25 torr xenon (31:15) Approaching high vacuum again with the turbo pump now on once more. (32:18) Flask is filled to seal-off pressure of 19 inHg = 178 torr, and subsequently is sealed off the system with a hand torch. That's it, folks! |
Date | |
Source | https://www.youtube.com/watch?v=gDv1Khiytco |
Author | Carl Willis |
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current | 06:16, 12 March 2017 | 37 min 21 s, 1,280 × 720 (988.44 MB) | Tnt1984 (talk | contribs) | User created page with UploadWizard |
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The following 2 pages use this file:
- Xenon
- File:Electrical discharges in xenon at various pressures.ogg (file redirect)
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