1 / 3

Ch.14. DC Discharge §14.1 (p.451) Def of Various Regimes of a dc normal glow

arc. Townsend. R. s.s. Ch.14. DC Discharge §14.1 (p.451) Def of Various Regimes of a dc normal glow PDP: neg glow only (~1lm/w) fluores. light: pos. glow (~70lm/w) §14.2 Positive Glow Column (s.s.) 1-D analysis ( ch.5 & same as for rf discharge. ch.10)

norah
Download Presentation

Ch.14. DC Discharge §14.1 (p.451) Def of Various Regimes of a dc normal glow

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. arc Townsend R s.s. Ch.14. DC Discharge §14.1 (p.451) Def of Various Regimes of a dc normal glow PDP: neg glow only (~1lm/w) fluores. light: pos. glow (~70lm/w) §14.2 Positive Glow Column (s.s.) 1-D analysis ( ch.5 & same as for rf discharge. ch.10) (1)Te Improved eq. For Te (2) cyl. 2.405 Eq. for Te

  2. The total ohmic power per length lost power radial loss only 1-D Thus (14.2.6) (14.2.10) (discharge current, input)

  3. 14.3 Cathode Sheath : Vac. Breakdown ; Paschen Law(14.3.9) Question:what’s needed to breakdown Ar? at Pn = 1Torr, d =1 cm vb brkdn Ar Meaning ofbrkdn ne • Townsend 1st Ionization Coeff. t ne p ne(z) i e z • Breakdown or No-Breakdown (in simulation) • Ni or Ne increasing exponentially (faster than linear in t) • Ni > Nthr. ~ • The profile shapes of & Ni E(z)/p Non-unif. ?

More Related