Electron linac based mixed-field transmutation of 129I

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:344

Article

Mamtimin, Mayir¹  Harmon, Frank¹  Starovoitova, Valeriia^1,2 

[1] Idaho State Univ, Idaho Accelerator Ctr, Pocatello, ID 83201 USA

[2] Niowave Inc, Lansing, MI 48906 USA

关键词: Linac;    Photonuclear;    Photoneutron;    Mixed-field;    Nuclear waste;   

DOI  :  10.1016/j.nimb.2014.11.076

来源: Elsevier

【 摘 要 】

The goal of this work was to determine the feasibility of using electron linacs for transmutation of selective long-lived fission products (LLFPs), particularly I-129 We have designed a converter system that produces both photons and neutrons, thus creating a mixed radiation field. The strength of the field depends on electron beam energy and current, as well as the converter material and geometry. The converter was optimized to maximize transmutation rate of I-129 via two channels: I-129(gamma,n)I-129 and I-129(n,gamma)I-130. The optimum electron beam energy was found to be around 100 MeV. Computer simulations were bench-marked by experimental data on Cs-133 (I-129 surrogate) photon-induced and neutron-induced transmutation rates. While further optimization of the system is necessary, we have demonstrated that accelerator-driven photonuclear reactions can be practical for I-129 transmutation. (C) 2014 Elsevier B.V. All rights reserved.

【 授权许可】

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