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A study of the simulation of the influence on formed neutron spectrum when Li target was covered with polyimide protective film

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Abstract

7Li(p,n)7Be reaction can be used for neutron generation for use in BNCT, but the lithium target must be protected from exposure to air, typically by being kept in vacuum. Keeping lithium target in vacuum and isolated conditions in all stages of construction and replacement in the system can be difficult and expensive. In this article we propose a method to prevent lithium’s reactivity with air using proper materials. The results show that use of polyimide, is a good choice for preventing lithium’s reactivity with air, and it is also a cost-effective choice. In addition, this choice has many benefits among them the reduction of fast neutron flux to 41% and it also establishes the IAEA-recommended in-air parameters. Dosimetric evaluation in the simulated head phantom shows that our designed beam is useful to treat deep seated brain tumors with the reduction of damage to the healthy tissue when treating deep-seated brain tumors. The dose in the first point in healthy tissue will decreases about 17%. All calculations were performed with the MCNPX code.

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Authors and Affiliations

  1. Faculty of Physics, Yazd University, P.O.B. 89195/741, Yazd, Iran

    Zahra Ahmadi Ganjeh & Mohammad Eslami-Kalantari

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  1. Zahra Ahmadi Ganjeh
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  2. Mohammad Eslami-Kalantari
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Correspondence to Mohammad Eslami-Kalantari.

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Ahmadi Ganjeh, Z., Eslami-Kalantari, M. A study of the simulation of the influence on formed neutron spectrum when Li target was covered with polyimide protective film. J Radioanal Nucl Chem 318, 1025–1031 (2018). https://doi.org/10.1007/s10967-018-6161-1

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  • DOI: https://doi.org/10.1007/s10967-018-6161-1

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