Mixing and quenching in the 3≤p states of sodium, induced by nitrogen
Casey, Timothy E
Jordan, James A.
Master of Arts
The cross sections for the collisional transfer of excitation between the 2P3/2 and 2P1/2. levels of the first excited state of sodium have been measured using nitrogen as the buffer gas. In addition, quenching cross sections for non-radiative transitions to the ground state have been determined and compared with previous results. The experiments were carried out at sodium vapor pressures of less than 10-6 Torr so that radiation trapping is negligible. The excited states of sodium were produced by optical excitation and the nitrogen pressure range was 0 - 10 Torr.