Yield of residues produced in 6Li reaction on Ta: A comparative analysis for 183Os

Abstract

The present work reports an analysis of the production yield of residues from the ⁶Li ＋ ¹⁸¹Ta reaction in a low-energy regime. The experimental yield of ^183gOs, ^183mOs, ¹⁸²Os, ¹⁸³Re, ¹⁸³Ta, ^182m2Ta, and ¹⁸⁰Ta have been measured in the 27-43 MeV energy window and compared with equilibrium and pre-equilibrium model calculations under the framework of the nuclear reaction model code, EMPIRE-3.2.2. The maximum yield measured for ^183gOs is 80.5 ± 14.9 MBq/C at 40.2 MeV energy in a 2.3 mg/cm² thick Ta target corresponding to a cross-section of 360.1 ± 34.4 mb from the ¹⁸¹Ta(⁶Li,4n)¹⁸³Os reaction and that for ¹⁸³Re is 1.36 ± 0.4 MBq/C at 42.75 MeV in a 2.4 mg/cm² thick target. The model estimations agree well with the experimental yields of ^183gOs and ¹⁸³Re. The possible production of stable residues has been estimated using the model-predicted cross-section in the studied energy range. A comparison of production yields of ^183m,gOs from ⁶Li- and ⁷Li-induced reaction on Ta demonstrates the ⁶Li reaction as a better candidate. Thick target yields have been evaluated for Os and Re isotopes.

Keywords: (183)Os and (183)Re radionuclide; (6)Li-induced reaction; Heavy-ion reaction; Stacked-foil activation technique; Yield estimation.