Rate coefficients for removal of [formula omitted] from selected rotational levels between Ni=0 and 57 in collisions with N 2 and C 2H 2

Abstract

We report rate coefficients ( k tot,i) for the total removal of CN( X 2 Σ +, ν=2, N i ) radicals from selected levels between N i = 0 and 57 in collisions with N 2 and C 2H 2. Additionally, state-to-state rate coefficients ( k i→f) have been measured for rotational energy transfer in collisions of CN( X 2 Σ +, ν=2, N i =0 and 1 ) with N 2 and C 2H 2. In the case of CN+C 2H 2, by comparing the values of k tot,i with the sum of the state-to-state rate coefficients (Σ f k i→f), we infer the rate constants for reaction ( k reac,i) of CN( X 2 Σ +, ν=2, N i =0 and 1 ) with C 2H 2.