Excitation functions and yields for cyclotron production of radiorheniumvia^natW(p,ߙxn)^181-186gRe nuclear reactions and tests on the production of^186gRe using enriched¹⁸⁶W

Abstract

Excitation functions and thin-target yields for the 181−186g Re radionuclides have been measured by the stacked-foil activation technique on tungsten foils of natural isotopic composition for different proton energies up to 22.0 MeV. A further check on the cross sections was done by irradiation of thick-targets and comparing the irradiated thicktarget yields with those calculated by analytical integration from the thin-target yields. The production of 186g Re was also studied by the irradiation of thick-target of enriched 186 W with a 13.6 ± 0.2 MeV proton beam. The results for 186 W( p, n) 186g Re were compared also to those calculated by the EMPIRE II code (version 2.19), due to 186g Re extensive applications in nuclear medicine for metabolic radiotherapy of tumours. It was found that the maximum percentage of 186g Re by irradiation of natural tungsten is about 20% only, which confirms the conclusion that high radionuclidic purity and specific activity of 186g Re necessitate the use of highly enriched 186 W target.

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“…The results for physical yields [39,40] are presented in Figs. 17 and 18 in comparison with the experimental yield data of [7,26,[41][42][43] …..…”

Upgrade of recommended nuclear cross section data base for production of therapeutic radionuclides

“…A total of 11 data sets were found in literature: [90][91][92][93][94][95][96][97][98][99][100][101][102] and are compared with TENDL libraries in Fig. 54.…”

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