Abstract
Production routes were recorded on available reactions for Ag-111 production from nuclear reactors or cyclotrons using a natural palladium target based on Pd-110(n, gamma) and (110)pd(d, n) reactions, respectively. Cd-nat(gamma, x) based on Cd-110(gamma, p) has also been studied as a prospective reaction for the production of Ag-111. Unfortunately, these nuclear reactions are difficult to utilize because, in some cases, they reduce the specific activity of Ag-111. This is a consequence of the stable silver isotopes produced in high concentrations. These isotopes include Ag-107,Ag- 109 and, in other cases, the high impurity of silver radioisotopes, such as Ag-110m,Ag- 106m,Ag- 105, that are produced during parallel nuclear reactions. Due to a scarcity of data regarding the (gamma, alpha) reaction, the gamma reaction on natural indium for Ag-111 production based on the In-115(gamma, alpha) reaction was calculated. The In-nat(gamma, alpha) reaction satisfies the criteria as a possible reaction to produce Ag-111 with a sufficient yield and purity as consequence of the high In-115 (95.7%) abundance as an enriched form and a relatively soft background caused by the parallel nuclear reactions.