RADIATIVE LIFETIMES OF ULTRAVIOLET MOLECULAR TRANSITIONS.

Abstract

Author Institution: Department of Astrophysical Sciences, Princeton UniversityRediative lifetimes have been determined for a number of ultraviolet and vacuum ultraviolet transitions of diatomic and small polyatomic molecules using the phase shift apparatus of $Lawrence^{1}$ with some recent modifications in the electron source. Results will be discussed for about 25 electronic transitions with lifetimes in the range 1-150 nanoseconds in: $H_{2}, N_{2}, N_{2}^{+} CO, CO^{+}, NO, NO^{+}, BF, CF, SiF, CF_{2}$, and $CO_{2}^{+}$ Spectra and lifetimes of emission systems of polyatomic molecules excited in $CF_{4}$ and $BF_{2}$ will also be presented. This work is supported by NASA grant NsG-414. $^{1}$ G. M. Lawrence, J.Q.S.R.T. 5, 359 (1965)