Thickness-variation measurement at downstream regions for Li target of fusion neutron sources

Okita, Takafumi; Watanabe, Kotaro; Hoashi, Eiji; Nakamura, Makoto; Ochiai, Kentaro; Kasugai, Atsushi

doi:10.1016/j.fusengdes.2022.113100

Fusion Engineering and Design

2022

DOI: 10.1016/j.fusengdes.2022.113100

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Thickness-variation measurement at downstream regions for Li target of fusion neutron sources

Takafumi Okita

Kotaro Watanabe

Eiji Hoashi

et al.

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Cited by 3 publications

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“…1 Introduction 7 Li(p,n) 7 B, 7 Li(d,n) 8 Be, T(d,n) 4 He, 9 Be(p,n) 9 B, and 9 Be(d,n) 10 B nuclear reactions are generally used for the neutron production [1][2][3][4][5][6][7]. Beryllium, Liquid [8][9][10][11][12][13][14][15], or solid lithium (Li) [16][17][18][19][20] are usually adopted in the development and construction of neutron sources. For example, neutrons can be generated by nuclear reactions between lithium (Li) and deuteron beam for fusion neutron sources such as Advanced-Fusion Neutron Source.…”

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confidence: 99%

Influence mechanism of lithium surface oxidation on neutron yield of lithium target for accelerator-based neutron source

Wang,

Sun,

Yang

et al. 2024

J. Inst.

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Lithium is generally adopted as the target to generate epithermal neutrons based on 7Li(p,n)7Be nuclear reaction for the application of accelerator-based boron neutron capture therapy (AB-BNCT). The stability of neutron yields and neutron energy spectrum are key factors for the therapeutic effects of the AB-BNCT. Owing to the active chemical properties of lithium, the surface oxidation formation of lithium may influence the soundness of the target system and the stability of neutron yields. Experimental and simulation methods were performed for a better understanding of the passivation layer formation after air exposure and the influence of the passivation layer on the neutron yield and energy spectrum. On one hand, X-ray photoelectron spectroscopy was adopted to study the chemical states of lithium after air exposure. On the other hand, particle and heavy ion transport code system (PHITS) was used to evaluate the effect of surface chemical states variation on neutron yield and energy spectrum. The simulation results indicate that the formation of Li2O with a thickness of 2 μm could mainly influence the neutron yields at the neutron emission angle of 20–90° with a maximum reduction of ∼ 10.4%.

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confidence: 99%

Influence mechanism of lithium surface oxidation on neutron yield of lithium target for accelerator-based neutron source

Wang,

Sun,

Yang

et al. 2024

J. Inst.

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Lithium fire protection design approach in IFMIF-DONES facility

D'Ovidio

Martín-Fuertes

Marugán

et al. 2023

Fusion Engineering and Design

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Investigation of applicability of long-distance LP system for Li target diagnostics in Fusion Neutron Source

Okita,

Okunaka,

Kojima

et al. 2024

Fusion Engineering and Design

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Thickness-variation measurement at downstream regions for Li target of fusion neutron sources

Cited by 3 publications

References 15 publications

Influence mechanism of lithium surface oxidation on neutron yield of lithium target for accelerator-based neutron source

Influence mechanism of lithium surface oxidation on neutron yield of lithium target for accelerator-based neutron source

Lithium fire protection design approach in IFMIF-DONES facility

Investigation of applicability of long-distance LP system for Li target diagnostics in Fusion Neutron Source

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