The N2+ dissociative recombination coefficient is measured for the first time as a function of the internal vibrational quantum number, v', of the X2&Sgr;g+ ground state. In this plasma-spectroscopy experiment, laser-induced photofluorescence techniques are used to study the behavior of N2+ ions in specifically indentified vibrational and rotational quantum states. The specific dissociative recombination coefficients for the v'=0, 1, and 2 vibrational levels of the N2+(X2&Sgr;g+) state are found to be nearly equal in magnitude. The variation of the total N2+ dissociative recombination coefficent with electron and vibrational temperature is given by the expression &agr;(N2+)=2.2¿10-7 (300/Te)0.39 (Tv/300)&sgr;.04. |