FORMATION OF CHARGED SPECIES IN SOME (N,GAMMA) ACTIVATED ORGANIC IODIDE-TOLUENE MIXTURES

Recoil I-128 species originating from the (n, gamma). activation of pu re liquid methyl iodide, ethyl iodide and iodobenzene and in the prese nce of toluene have been collected on Ag/AgI electrodes, kept at 175 V /cm (D.C. field). Both anionic and cationic species labelled with I-12 8 are produced and collected on charged plates. A higher enrichment on anode than that on cathode is obtained throughout the concentration r ange studied. Results show that the addition of varying amounts of tol uene to the target prior to thermal neutron activation plays an import ant role in the final chemical stabilisation of hot iodine species thr ough its moderating effect and reactivity.