Abstract
Studies have been devoted to the production of alpha emitters for medical application in collaboration with the GIP ARRONAX that possesses a high energy and high intensity multi-particle cyclotron. The productions of Ra-223, Ac-225 and U-230 have been investigated from the Th-232(p,x) and Th-232(d,x) reactions using the stacked-foils method and gamma spectrometry measurements. These reactions have led to the production of several fission products, including some with a medical interest like Mo-99, Cd-115g and I-131. This article presents cross section data of fission products obtained from these undedicated experiments. These data have been also compared with the TALYS code results.
Highlights
The irradiation of thorium by light charged particles like protons and deuterons leads to the production of several radionuclides among which radium-223 [1], bismuth213 [2] and thorium-226 [3], alpha emitters having a great potential in oncologic therapy
The activity values were determined by gamma spectrometry, and the associated spectra give information on the production of several fission products inside the thorium-232 target
The apparent depletion of the heavier fission product (FP) peak is due to these experimental conditions (γ spectrometry detectability)
Summary
The irradiation of thorium by light charged particles like protons and deuterons leads to the production of several radionuclides among which radium-223 [1], bismuth213 [2] and thorium-226 [3], alpha emitters having a great potential in oncologic therapy. The GIP ARRONAX is focused on the production of medically relevant radionuclides and possesses a multi-particle cyclotron [4]. This accelerator has been used for our study on the Th-232(p,x) and Th-232(d,x) reactions. The activity values were determined by gamma spectrometry, and the associated spectra give information on the production of several fission products inside the thorium-232 target. The activity of each detectable and quantifiable fission product (FP) has been determined and their associated production cross section has been extracted. From these data, we determined the mass distribution of the FP and the sum of the fission product cross section values. A systematic comparison with the results of the TALYS code has been done
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