Model calculations of (sup 111)In production via the (sup 112,114,115,116,117)Sn((sup 1)H, xnypz(alpha))(sup 111)Sb (yields) (sup 111)Sn (yields) (sup 111)In reactions

摘要

The possibility of production of no-carrier-added (sup 111)In from its grandparent (sup 111)Sb via (sup 112,114,115,116,117)Sn ((sup 1)H,xn) (sup 111)Sb (yields) (sup 111)Sb (yields) (sup 111)Sn (yields) (sup 111)In reactions and from its parent (sup 111)Sn via the (sup 112,114,115,116,117)Sn ((sup 1)H,pxn) (sup 111)Sn (yields) (sup 111)In reaction is presented here. In addition, production of (sup 111)In directly via the (sup 112,114,115,116)Sn ((sup 1)H, (sub (alpha)xn) (sup 2pxn)) (sup 111)In reactions is discussed. In this method the contaminant (sup 114m)In is not fed during decay of nuclei belonging to A=114 isobaric chain. Starting from the (sup 115)Sn target it is possible to produce (sup 114)In in reactions of the type ((sup 1)H, 2pxn), ((sup 1)H, (alpha)) etc. Fortunately, these reactions have low cross sections, not exceeding a few Mb in the maxima of their excitation functions. The excitation functions of reactions leading to (sup 111)In mentioned above were calculated in the proton energy range 6-100 MeV using to Overlaid Alice code. These calculations indicate that (sup 111)In can be produced with highest cross sections by irradiation of enriched (sup 112)Sn target with protons of energy lower than 40 MeV. For the (sup 114,115,116,117)Sn targets production of (sup 111)In requires beside enriched targets also higher proton energies (E(sub 1H) > 100 MeV). In order to validate the calculations measurements using 40 and 100 MeV protons would be highly desired, although the calculated cross sections seem to be exact enough, to provide information on contamination by different radioisotopes produced during bombardment by protons. (author). 6 refs, 6 figs, 5 tabs. (Atomindex citation 26:046544)