E. Mehdizadeh et al., LIFETIMES, POPULATION AND DEACTIVATION MECHANISMS OF THE C-1-PI(U), 2(3)PI(G) AND 2(1)SIGMA(-2()(U) STATES OF NA), Applied physics. B, Lasers and optics, 59(5), 1994, pp. 509-515
The UV and visible fluorescence of Na-2 molecules in a heat-pipe, exci
ted by the frequency doubled radiation of a tunable mode-locked cavity
-dumped cw dye laser was observed through a monochromator, using time-
resolved single-photon counting. The effective lifetimes of the direct
ly excited (CIIu)-I-1 state and the collisionally populated 2(3)II(g)
and 2(1) Sigma(u)(+) states have been measured as a function of sodium
-vapor pressure and argon pressure which yields the radiative lifetime
s, the population mechanisms and the collisional quenching cross secti
ons of the three states.