Abstract
177Lu can be produced by neutron irradiation of 176Lu (direct route) or 176Yb (indirect route). In direct route, the thermal neutron capture cross-section of 176Lu does not vary as 1/v and shows strong temperature (temperature of medium as well as that of the thermalized neutrons) dependence, resulting in added complexities in radioactivity estimation. We use an analytical model to estimate the activity of 177Lu produced from direct as well as indirect routes. For direct route, we have used both Westcott convention-based method and one-group effective cross sections generated using multigroup cross-section library. Our estimations are also validated against known experimental results and compared to measured activity produced in Indian research reactors.
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Acknowledgements
We are thankful to Shri C. G. Karhadkar, Director, Reactor Group and Shri H. G. Gujar, Head, RRSD, RG. We are also grateful to Shri Paritosh Pandey of Reactor Physics and Nuclear Engineering Section, RRSD for providing technical support. We are thankful to Reactor Operation Division, especially to Shri Vikas Jain, for providing us the reactor power profile during the irradiation of LuCl3 samples and details of their irradiation schedule.
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Singh, T., Banerjee, S., Mishra, A. et al. Estimation of 177Lu activity produced from direct and indirect routes in Indian research reactors. Life Cycle Reliab Saf Eng 11, 219–228 (2022). https://doi.org/10.1007/s41872-022-00197-0
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DOI: https://doi.org/10.1007/s41872-022-00197-0