Benchmark experiment for the cross section of the 100Mo(p,2n)99mTc and 100Mo(p,pn)99Mo reactions

摘要

As nuclear medicine community has shown an increasing interest in accelerator produced 99mTc radionuclide,\udthe possible alternative direct production routes for producing 99mTc were investigated intensively.\udOne of these accelerator production routes is based on the 100Mo(p,2n)99mTc reaction. The cross section of\udthis nuclear reaction was studied by several laboratories earlier but the available data-sets are not in\udgood agreement. For large scale accelerator production of 99mTc based on the 100Mo(p,2n)99mTc reaction,\uda well-defined excitation function is required to optimise the production process effectively. One of our\udrecent publications pointed out that most of the available experimental excitation functions for the 100Mo\ud(p,2n)99mTc reaction have the same general shape while their amplitudes are different. To confirm the\udproper amplitude of the excitation function, results of three independent experiments were presented\ud(Takács et al., 2015). In this work we present results of a thick target count rate measurement of\udthe Ec = 140.5 keV gamma-line from molybdenum irradiated by Ep = 17.9 MeV proton beam, as an\udintegral benchmark experiment, to prove the cross section data reported for the 100Mo(p,2n)99mTc and\ud100Mo(p,pn)99Mo reactions in Takács et al. (2015).