Energy and angular distributions of alpha-particles in the O^16 (n, a) C^13 reaction have teen obtained at 14.1 Mev, by using a Wilson cloud chamber. The well resolved groups of alpha-particles leading to the states of 3.85 Mev, 3.68 Mev, 3.08 Mev and ground of C^13 were obtained. The angular distributions for these states were analyzed. For the peak in the backward direction the heavy particle stripping process was applied. For the peak in the forward direction two reaction mechanisms were proposed: the knock-on process and pick-up process.