Reaction of 13N atoms formed in propionic acid-d6 irradiated in a nuclear reactor

The chemical behaviour of 13N formed by the 12C(d,n)13N reaction by recoil deuterons was studied in propionic acid-d6 irradiated at 195 to 295 K for 10 min in a reactor. The yields of 13NH3 and H13NOx showed remarkable change with the phase change of the media from solid to liquid, i.e., the yield of 13NH3 increased from 49.1+-2.6 to 57.3+-1.5% and that of H13NOx decreased from 28.9+-1.8 to 20.4+-1.9%. The authors conclude that the radical reactions proceed more rapidly in liquid phase than in solid one and consequently that the formation of 13NH3 is enhanced contrary to the formation of H13NOx. (author) 15 refs.; 4 figs