Chemical Effects of Photonuclear Reactions in the Propyl Bromides

Two new photonuclear reactions are reported, Br79(γ,2n)Br77 and Br79(γ,3n)Br76.The organic retention following the Br81(γ,n)Br80m reaction in liquid n‐ and isopropyl bromides was found to be 47 and 36%, respectively, appreciably higher than reported values following the Br79(n,γ)Br80m reaction. Higher retentions were also noted for irradiations of the solid bromides. The relative yields of individual organic products were determined for irradiations of both liquid and solid and were in many respects in striking agreement with data from activation by (n,γ) reaction and isomeric transition. In solid n‐propyl bromide the (γ,n) and (γ,3n) reactions gave the same ratio of parent compound to total organic yield.Data on the scavenger effect show that thermal recombination reactions occur in both liquid and solid. Marked increases are shown in the thermal organic yield with only slight increases in the nonthermal retention for both bromides for (γ,n) compared to (n,γ) activation. The reasons for these increases a...