Collisional dynamics of Bi[sub 2] A(0[sub u][sup +]). II. State-to-state rotational energy transfer

Franklin, Robert E.; Perram, Glen P.
March 2002
Journal of Chemical Physics;3/22/2002, Vol. 116 Issue 12, p4896
Academic Journal
Rotational-to-translational (R-T) energy transfer within v' = 1 of the A (0[sup +][sub u]) state of Bi[sub 2] has been investigated using spectrally resolved, laser induced fluorescence techniques. Spectrally resolved emissions from collisionally populated rotational levels of Bi[sub 2](A, v' = 1 ) were observed for helium, neon, and argon collision partners after laser excitation of the high rotational levels d'= 171,201, and 231. Total rotational removal rates from the initially prepared state range from 2.8-8.9 x 10[sup -10] cm³/molecules. Collisional population of rotational states with ΔJ ≤ 56 was observed at pressures of 0.09-1.4 Torn The state-to-state rates are adequately modeled by the energy based statistical power gap law.


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