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Lin M, Tian W, Wang J, Gao R, Fan F, Qin Z, Cao S, Ran Z. Optimization of target system for the production of 99Mo via 100Mo(γ,n) 99Mo reaction. Appl Radiat Isot 2023; 202:111059. [PMID: 37812858 DOI: 10.1016/j.apradiso.2023.111059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 09/24/2023] [Accepted: 09/28/2023] [Indexed: 10/11/2023]
Abstract
With an increase of stopping operation of nuclear reactors worldwide, the supply of medical 99Mo becomes difficult and thus many efforts have been made to find an alternative. A process based on an electron linear accelerator (linac) system and a100Mo target via the 100Mo (γ,n)99Mo reaction receives a lot of attention due to the relatively low level of co-produced impurities. This process has been recently developed at the Institute of Modern Physics (IMP) and the Monte Carlo simulation was used to optimize the target system before operating pilot irradiation experiments. First, tungsten and tantalum, as mostly used converter materials, were tested. The yield of 99Mo was evaluated with respect to the converter thickness and the electron beam energy by means of Geant4 simulations. Besides, the specific activity of 99Mo produced from one-stage approach (100Mo target without a converter) and two-stage approach (100Mo target with a converter) was compared when varying the testing conditions. The two-stage approach was selected for the experiment due to the higher specific activity of produced 99Mo at all tested conditions. A target consisting of a 10 mm thickness of the 100Mo tablets and a 2.4 mm thick Ta converter was irradiated for 40 h (50 MeV with 0.2 μA). The Geant4-calculated specific activity of generated 99Mo at the end of bombardment agreed well with the experimental value, which proved high level of accuracy of the Geant4 simulation. In future studies, the Geant4 simulation will be used to optimize the production process when using high power linac system.
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Affiliation(s)
- Mu Lin
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Wei Tian
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Jieru Wang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Ruiqin Gao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Fangli Fan
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Zhi Qin
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.
| | - Shuchun Cao
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Zhaohui Ran
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
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Torkamani A, Khotbehsara AT, Rahmani F, Khelvas A, Bugaev A, Ghasemi F. Conceptual design of hybrid target for molybdenum-99 production based on heavy water. NUCLEAR ENGINEERING AND TECHNOLOGY 2023. [DOI: 10.1016/j.net.2023.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
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Jang J, Kumakura Y, Tatenuma K, Ozeki AN, Wada Y, Akimitsu N, Tsuguchi A, Kikunaga H, Higaki S, Uesaka M. A preliminary biodistribution study of [99mTc]sodium pertechnetate prepared from an electron linear accelerator and activated carbon-based 99mTc generator. Nucl Med Biol 2022; 110-111:1-9. [DOI: 10.1016/j.nucmedbio.2022.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 03/05/2022] [Accepted: 03/08/2022] [Indexed: 11/30/2022]
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Hasan S, Prelas MA. Molybdenum-99 production pathways and the sorbents for 99Mo/99mTc generator systems using (n, γ) 99Mo: a review. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-03524-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Tkac P, Chemerisov S, Gromov R, Song J, Nolen J, Makarashvili V, Vandegrift G. Side-reaction products identified for photo-nuclear production of99Mo. J Radioanal Nucl Chem 2020. [DOI: 10.1007/s10967-020-07307-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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Purification of 99Mo and 99mTc from radioactive traces of Nb, Zr, and Y impurities: method applicable in the purification of the spent 100/99Mo–99mTc generator. J Radioanal Nucl Chem 2019. [DOI: 10.1007/s10967-019-06692-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Gopalakrishna A, Suryanarayana SV, Naik H, Nayak BK, Patil BJ, Devraju S, Upreti RR, Kinhikar R, Deshpande DD, Maletha P, Kamaldeep, Banerjee S, Saxena A. Production of 99Mo and 64Cu in a mixed field of photons and neutrons in a clinical electron linear accelerator. J Radioanal Nucl Chem 2018. [DOI: 10.1007/s10967-018-6016-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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