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Voltamperkarakteristika

Voltamperkarakteristika. i. n + >> n e. D. C. A. B. U. 0. V th. d k. K. A. E. d. 0. Eksperimendist:. C:. i. D. C. Huumlahendus Glow Discharge. V. C  D. i. t. Katoodpiirkond. I(x). V(x). E(x). n(x). -. j(x). +. Al katood: U K = 100 V (Ar); = 180 V (N 2 )

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Voltamperkarakteristika

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  1. Voltamperkarakteristika i n+ >> ne D C A B U 0 Vth dk K A E d 0 Eksperimendist: C:

  2. i D C Huumlahendus Glow Discharge V C  D i t

  3. Katoodpiirkond I(x) V(x) E(x) n(x) - j(x) + Al katood: UK = 100 V (Ar); = 180 V (N2) Ni katood: UK = 150 V (He); = 170 V (Kr)

  4. E Kiired (mittetasakaalulised) elektronid (beam electrons) V Energia relaksatsiooniaeg (n > 1) x I F NG CF Kui V >>v, siis tE = 10-7 s kui V = v, siis tE = 10-9 s s exc ion Keskmine energia e Nt: p = 5 Torr, Te = 1 eV

  5. Õõneskatood (hollow cathode) K K E D e 1 D 2 3 Elektronid on sulustatud ja saavad energiat juurde

  6. NB! Fotode säriajad on erinevad Kumb kujutab Townsendi, kumb huumlahendust?

  7. Rakendusi: kiletehnoloogia

  8. Rakendusi: sügavusprofiilid

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