Excitation functions for protons induced on 85/natRb targets that lead to the production of 85Sr radioisotopes using TALYS 1.0 and ALICE/ASH codes were calculated. Rubidium chloride deposition on copper substrate was carried out via sedimentation method in order to produce Strontium-85. 520 mg RbCl, 208 mg ethyl cellulose (EC) and 4 mL acetone were used to prepare a layer of enriched rubidium chloride of 11.69 cm2 area and 62.2 mg · cm−2 thickness. The deposited target was irradiated at 20 A current and 15 MeV proton beam for 10 h and no degradation was observed. The 85Sr production yield was 1.4 MBq/mA · h. The target material was dissolved by 50 mL acetone. Dissolved Strontium-85 was separated from rubidium by Chelex 100 ion exchanger.

TALYS 1.0 code was used to calculate excitation function for proton induced on 85/87/ nat Rb , 89 Y and 88/87/86 Sr targets that lead to produce 85 Sr radioisotope using low and medium energy accelerators. Recommended thickness of the targets according to SRIM code was investigated. Theoretical integral yields for any reaction were computed. The results were compared with experimental data. 85 Rb (p, n)85 Sr process was determined as most interesting one due to radionuclidic purity. The TALYS 1.0 code predicts a maximum cross-section of about 798 mb at 11 MeV for this reaction.

The Indium-111 physical-decay parameters as a β-emitter radionuclide show some potential for radiodiagnostic and radiotherapeutic purposes. Medical investigators have shown that 111 In is an important radionuclide for locating and imaging certain tumors, visualization of the lymphatic system and thousands of labeling reactions have been suggested. The TALYS 1.0 code was used here to calculate excitation functions of 112/114–118 Sn+p , 110 Cd +3 He , 109 Ag +3 He , 111–114 Cd+p , 110/111 Cd+d , 109 Ag +α to produce 111 In using low and medium energy accelerators. Calculations were performed up to 200 MeV. Appropriate target thicknesses have been assumed based on energy loss calculations with the SRIM code. Theoretical integral yields for all the latter reactions were calculated. The TALYS 1.0 code predicts that the production of a few curies of 111 In is feasible using a target of isotopically highly enriched 112 Cd and a proton energy between 12 and 25 MeV with a production rate as 248.97 MBq·μA-1 · h-1. Minimum impurities shall be produced during the proton irradiation of an enriched 111 Cd target yielding a production rate for 111 In of 67.52 MBq· μA-1 · h-1.

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Tenreiro, C (Tenreiro, Claudio); Gholamzadeh, Z (Gholamzadeh, Zohreh). Talca Univ, Dept Phys, Talca, Chile.Radioisotopes find very important applications in various sectors of economic significance and their production is an important activity of many national programmes. Some deterministic codes such as ALICE ASH 1.0 and TALYS 1.0 are extensively used to calculate the yield of a radioisotope via numerical integral over the calculated cross-sections. MCNPX 2.6 stochastic code is more interesting among the other Monte Carlo-based computational codes for accessibility of different intranuclear cascade physical models to calculate the yield using experiment-based cross-sections. A benchmark study has been proposed to determine the codes' uncertainty in such calculations. Cd-109, Y-86 and Sr-85 production yields by proton irradiation of silver, rubidium chloride and strontium carbonate targets are studied. Cd-109, Y-86 and Sr-85 cross-sections are calculated using ALICE ASH 1.0 and TALYS 1.0 codes. The evaluated yields are compared with the experimental yields. The targets are modelled using MCNPX 2.6 code. The production yields are calculated using the available physical models of the code. The study shows acceptable relative discrepancies between theoretical and experimental results. Minimum relative discrepancy between experimental and theoretical yields is achievable using ISABEL intranuclear model in most of the targets simulated by MCNPX 2.6. The stochastic code utilization can be suggested for calculating Cd-109, Y-86 and Sr-85 production yields. It results in more valid data than TALYS 1.0 and ALICE ASH 1.0 in noticeably less average relative discrepancies