Single state NH(X~3#SIGMA#~-, v =0 , J, N) preparation for state-to-state studies

摘要

A new method is presented to examine state-to-state rotational energy transfer in ground state NH(X~3#SIGMA#~-, v = 0, J, N). NH(X~3#SIGMA#~-) is generated via state selective stimulated emission pumping using the strongly forbidden NH(a~1#DELTA# -> X~3#SIGMA#~-) intercombination transition around 794 nm after foregoing photodissociation of NH_3 at a wavelength of 266 nm. Products are detected by laser induced fluorescence (LIF). Chemically relevant collision dynamics including spatial processes can be studied for the first time in v = 0 of the electronic ground state. State-to-state rate constants for inelastic collisions of NH(X~3#SIGMA#~-, v = 0, J = 3, N = 3) with Ne are presented.