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Development of a neutron generating target for compact neutron sources using low energy proton beams

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Abstract

A neutron generating target using a Be(p,n) reaction was developed for a RIKEN compact accelerator-driven neutron source (RANS). The major problem of targets using a low energy proton beam is blistering, which is actually due to hydrogen embrittlement caused by injected hydrogen. To avoid this problem, the authors have proposed a new target design with a hydrogen diffusible backing and its design was modeled using finite-element analysis (FEM) and Monte-Carlo ion injection simulation. Also, the mechanical strength and heat removal capability of the target were considered by FEM. Based on those simulations, a new target was manufactured and applied to RANS and operated for 1 year without any problems. Also, the residual radioactivity of the target was investigated by experiment and simulation.

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Acknowledgments

The authors would like to express their gratitude for the advice from JCANS (Japan Collaboration on compact accelerator-driven neutron sources) members especially Prof. Y. Kiyanagi, Prof. H. M. Shimizu and Prof. Y. Iwashita. The authors would like to acknowledge the support from Advanced Manufacturing Support Team, RIKEN Center for Advanced Photonics.

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Correspondence to Yutaka Yamagata.

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Yamagata, Y., Hirota, K., Ju, J. et al. Development of a neutron generating target for compact neutron sources using low energy proton beams. J Radioanal Nucl Chem 305, 787–794 (2015). https://doi.org/10.1007/s10967-015-4059-8

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  • DOI: https://doi.org/10.1007/s10967-015-4059-8

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