Production of 52Fe from symmetric complete fusion-evaporation reactions

McGuinness, Sean; Ferran, Samuel J.; Wilkinson, John; Loveless, C. Shaun; Anderson, T.; Blankstein, D.; Clark, Adam M.; Henderson, S. L.; Nelson, A.; Reingold, Craig; Skulski, Michael; Lapi, Suzanne E.; Peaslee, Graham F.

doi:10.1016/j.nimb.2021.02.008

Cited by 2 publications

(2 citation statements)

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“…It is apparent from Table 2 that the measured production from the 72 MeV 16 O run is far below what was predicted. Given the relatively good agreement between prediction and measurement for the 55 MeV 16 O run and previous experience 11,12 suggesting that PACE is more likely to overpredict than underpredict, it seems unlikely that the predictions were simply off to such a degree from a simple increase in bombarding energy. More detailed examinations suggest the most likely explanation is that krypton gas escaped from the target before and during gamma spectroscopy.…”

Section: Resultsmentioning

confidence: 82%

“…This work demonstrates the feasibility of a different approach to produce 76 Br and 77 Br: symmetric heavy-ion reactions. Symmetric heavy-ion fusion-evaporation reactions have been proposed to produce other medically relevant radionuclides 11 , 12 and have several advantages over proton or alpha spallation reactions. The most significant advantage is the isotopic yield specificity since the amount of energy lost through light charged particle evaporation restricts the number of resultant radionuclides formed in each reaction.…”

Section: Heavy-ion Fusion-evaporation Reactionsmentioning

confidence: 99%

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Heavy-ion production of 77Br and 76Br

McGuinness

Wilkinson

Peaslee

2021

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Many radioisotopes with potential medical applications are difficult to produce routinely, especially those on the proton-rich side of the valley of stability. Current production methods typically use light-ion (protons or deuteron) reactions on materials of similar mass to the target radioisotope, which limits the elemental target material available and may require the use of targets with poor thermal properties (as is the case for the production of radiobromine). These reactions may also create significant amounts of proton-rich decay products which require chemical separation from the desired product in a highly radioactive environment. A promising alternative method using heavy-ion fusion-evaporation reactions for the production of the medically relevant bromine radioisotopes 76Br (t1/2 = 16.2 h) and 77Br (t1/2 = 57.0 h) is presented. Heavy-ion beams of 28Si and 16O were used to bombard natural chromium and copper targets just above the Coulomb barrier at the University of Notre Dame's Nuclear Science Laboratory to produce these bromine and precursor radioisotopes by fusion-evaporation reactions. Production yields for these reactions were measured and compared to PACE4 calculations. In addition to using more robust targets for irradiation, a simple physical–chemical separation method is proposed that will lead to very high radiopurity yields. A summary of accelerator facility requirements needed for routine production of these radioisotopes is also presented.

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Section: Resultsmentioning

confidence: 82%

Section: Heavy-ion Fusion-evaporation Reactionsmentioning

confidence: 99%