Über das Abklingen der ersten positiven Gruppe des N2 und der Asundi-Banden des CO

Abstract

The lifetimes of certain states in the First Positive System of N2 (B 3Πg → A 3Σu+) and the Asundi-Bands of CO (a′ 3Σ → a 3Π) have been measured as a function of pressure after excitation in a pulsed rf discharge. The fluorescence of the investigated CO-system shows exponential decay in contrast to the First Positive System of N2 that throughout has two decay constants. The pressure dependence of the lifetimes has been investigated in the range of 10-2 to 1 torr. This allows to calculate quenching cross-sections of the excited states.