Vol. 1, No 1, 1994 pp. 31 - 35
UDC
537.5
DECREASE OF THE N2(A) METASTABLE CONCENTRATION IN THE GAS DIODE AFTERGLOW
M.K. Radović
Faculty of Philosophy, Department of Physics, PF 91, 18001 Niš, Yugoslavia
Abstract. The dependencies of N(A) metastable concentration decrease on the two N2(A) metastable collision rate and on the collising rate with the atomic nitrogen in the gas diode afterglow nA = f(τ) were investigated. A physical model of metastable deexcitation processes was proposed. The corresponding differential equations were calculated numerically for the ranging from 10-8 to 10-12 cm3s-1 and for values from 10-10 to 10-12 cm3s-1, and for the afterglow times τ from 10-4 to 102 s. The results of this estimations are compared with the interpretation of the = f(τ) curve that wets experimentally determined previously. The results shows that conditions can be found for which this metastables can exist in the gas diode tube with the significant concentrations for the afterglow periods over 20 seconds.
OPADANJE KONCENTRACIJE METASTABILNIH N2(A) MOLEKULA U GASNOJ DIODI NAKON PRESTANKA PRAŽNJENJA
U radu je istraživan uticaj kolizionih faktora za sudar dva metastabilna molekula azota u N2(A) stanju kao i sudara metastabilnog molekula azota sa atomarnim azotom na opadanje koncentracije metastabilnih N2(A) molekula azota u međuelektrodnom prostoru gasne diode nakon prestanka pražnjenja. Numerički proračun je vršen za vrednosti od 10-8 do 10-12 cm3s-1, za vrednosti od 10-10 do 10-12 cm3s-1, a za posleprobojna vremena τ od 10-4 do 102 sekundi. Rezultati proračuna su upoređeni sa interpretacijom eksperimentalno određene zavisnosti = f(τ) date ranije [6] što je ukazalo da se mogu naći uslovi pod kojima metastabilni molekuli azota mogu postojati u balonu gasne diode relativno dugi vremenski period nakon prestanka pražnjenja.
