Estimation of production yield of 93m Mo and other residues from a 7 Li-induced reaction
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Estimation of production yield of 93mMo and other residues from a 7Li‑induced reaction Rinku Prajapat1 · Moumita Maiti1 Received: 18 January 2020 © Akadémiai Kiadó, Budapest, Hungary 2020
Abstract The crux of the present work is to analyze the yield of the residues produced in the 7Li-induced reaction on 89Y target in the low energy range. The experimental yields of 93mMo, which is a significant product in the energy range considered, and other coproduced radionuclides, such as 92mNb, 89Zr, 91mY, and 90mY have been measured within 19–40 MeV energy, and are compared with the compound and pre-compound models in the framework of the statistical reaction model code EMPIRE. The maximum measured yield for 93mMo is 374 MBq/C at 31.3 MeV in a 3 mg/cm2 thick 89Y target corresponding to a cross-section of 396.8 ± 38.6 mb from the 89Y(7Li,3n)93mMo reaction. The model estimations well reproduce the experimental yields of 93mMo. The possible production of stable isotopes has also been estimated theoretically from the model over the experimental energy range. The reaction could be an alternative route for the production of no-carrier-added 93m Mo radionuclide provided that the radionuclides are chemically separated from the bulk 89Y matrix. Keywords Yield estimation · Stacked-foil technique · 7Li-induced reaction · Heavy-ion reaction · 93mMo radionuclide
Introduction Exploration of the charged particle induced reactions that includes light- and heavy-projectiles is important to understand the reaction mechanisms at various energy domains. Light-ion induced reactions are well explored in this context, a vast database has already been created from the multiple measurements of quantities such as total cross-section, differential, and double differential cross sections, production yield, tick target yield, etc. for a given reaction. Although several attempts have been made to explore various aspects of the heavy-ion (A > 4) reactions in the past decades, such data are still limited. Thus reaction mechanisms of light-ion reactions are better understood over a wide energy range compared to the interactions between two heavy nuclei. It motivates many to investigate the heavy-ion reactions in depth. Investigation of the fusion of weakly bound projectiles (6,7Li, 9Be, etc.) to a medium or heavy target is even more interesting among the heavy-ion reactions as they often break up into the cluster constituents under the influence of * Moumita Maiti [email protected] 1
Department of Physics, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
the nuclear force field. As a result, the expected production of the residues drops. Although theoretical models exist to estimate the yield of the residues from a range of heavy projectile-target interaction over a broad energy domain, yet it often fails to estimate multi-particle or cluster emission channels accurately due to the complexity involved in it. Therefore, experimental verification of cross-sections or yields of the residues is imperative, particula
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