Vibrationally excited NH2((X) over tilde B-2(1)) was generated by the photolysis of NH3 at 193 nm, and the relative yields of OH(X-2 Pi) and H atoms of the title reaction were measured by the laser-induced fluorescence technique. Vibrational excitation of NH2 has been found effective in increasing the branching ratio to the OH channel without substantial barriers. The yield of H atoms (23%) has given the effective temperature of the system to be 720 K for NH2 generated in the photolysis of NH3 at 193 nm. (C) 2015 Elsevier B.V. All rights reserved.