准单能中子单粒子效应研究现状

韩金华; 郭刚; 陈启明; 文章; 张付强

doi:10.11884/HPLPB201931.180254

准单能中子单粒子效应研究现状

doi: 10.11884/HPLPB201931.180254

韩金华^{1, 2,},
郭刚^{1, 2, ,},
陈启明^{1, 2},
文章^{1, 2},
张付强^{1, 2}

1.
中国原子能科学研究院核物理研究所，北京 102413
2.
国防科技工业抗辐照应用技术创新中心, 北京 102413

详细信息

作者简介:
韩金华(1987—), 男，硕士，从事辐射物理研究；jinhua.h@outlook.com

通讯作者:
郭刚(1966—), 男，研究员，从事辐射物理研究；ggg@ciae.ac.cn

中图分类号: O571.5
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- 被引次数: 0
出版历程
- 收稿日期: 2018-09-30
- 修回日期: 2019-01-14
- 刊出日期: 2019-02-15

Quasi-monoenergetic neutron single event effects

Han Jinhua^{1, 2
,},
Guo Gang^{1, 2
, ,},
Chen Qiming^{1, 2},
Wen Zhang^{1, 2},
Zhang Fuqiang^{1, 2}

1.
Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
2.
National Innovation Center of Radiation Application, Beijing 102413, China

摘要

摘要: 对国际上用于单粒子效应(SEE)研究的准单能中子源进行了相关调研，对产生准单能中子源的⁷Li(p, n)⁷Be核反应、装置布局以及表征中子场性质的中子注量率、中子能谱、中子束流轮廓及其均匀性、热中子本底等参数的理论计算及实验测量进行了系统的介绍。进行准单能中子SEE实验要求中子源有较高的中子注量率水平、较大的束流轮廓、较好的束流均匀性以及较低的热中子本底，并且能测量出精确的中子能谱。对准单能中子SEE实验过程以及三种中子SEE截面的尾部修正方法进行了介绍。
- 准单能中子源 /
- 中子注量率 /
- 中子能谱 /
- 中子束流轮廓 /
- 单粒子效应 /
- 尾部修正
Abstract: The international quasi-monoenergetic neutron sources for the single event effect (SEE) study are investigated, the related issues including the ⁷Li(p, n)⁷Be nuclear reaction, the facility layout, and the theoretical calculations and experimental measurements of the neutron field parameters such as the neutron flux, the neutron energy spectrum, the neutron beam profile and its uniformity, and the thermal neutron background, are systematically introduced. The quasi-monoenergetic neutron SEE experiments require that the neutron source have a high neutron flux, large and uniform beam spot, and low thermal neutron background, and that an accurate neutron energy spectrum be obtained through experiments. The quasi-monoenergetic neutron SEE experiments and three methods for the tail correction of neutron SEE cross sections are introduced.
- quasi-monoenergetic neutron source /
- neutron flux /
- neutron energy spectrum /
- neutron beam profile /
- single event effect /
- tail correction method

HTML全文

图 1 日本理化学研究所(RIKEN)使用飞行时间法测量得到的不同能量质子轰击10 mm厚⁷Li靶在0°散射角距离靶12 m处的中子能谱^[21]

Figure 1. Energy spectra of quasi-monoenergetic neutron sources generated from a 10 mm thick ⁷Li target bombarded by protons of different energies at RIKEN. They were measured on the neutron beam line at 12 m from the ⁷Li target by the TOF method^[21]

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图 2 日本原子能机构高崎先进辐射研究所(TIARA)的准单能中子源装置布局示意图^[19]

Figure 2. Schematic view of TIARA ⁷Li(p, n) quasi- monoenergetic neutron source facility^[19]

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图 3 使用TALYS，Geant4，Fluka计算的100 MeV质子与⁷Li核反应产生的准单能中子能谱(即0°角的双微分截面)

Figure 3. Energy spectra (i.e. double differential crosssections at the 0° angle) for the quasi-monoenergeticneutrons from the nuclear reactions betweenthe 100 MeV protons and ⁷Li calculatedby TALYS, Geant4 and Fluka

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图 4 CYRIC准单能中子场距准直器出口1 m处的束流轮廓图^[22]

Figure 4. Neutron profile for CYRIC ⁷Li(p, n) quasi- monoenergetic neutron source measured on the neutron beam line at 1 m from the collimator exit^[22]

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图 5 NAC的⁷Li(p, n)中子源在0°和16°方向中子能谱的比较^[49]

Figure 5. Spectral fluence per unit monitor reading N at neutron emission angles of 0° and 16° relative to the proton beam direction for NAC ⁷Li(p, n) neutron source^[49]

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表 1 国际上用于SEE研究的各⁷Li(p, n)中子源装置及相关参数^{[10, 18]}

Table 1. ⁷Li(p, n) neutron source facilities for SEE tests and the related parameters^{[10, 18]}

institution	country	energy/MeV	beam current/μA	ΔE/MeV	distance/m	flux/(cm^-2·s^-1)
UC Davis	USA	40~60	10	1	3	6×10⁵
UCL	Belgium	20~65	10	2	3.3	10⁶
TRIUMF	Canada	70~200	0.3	0.7	~1	10⁵
TSL	Sweden	25~180	10	1	3	3×10⁵
RCNP	Japan	392	1.0	1	~1	3×10⁵
TIARA	Japan	30~85	3	2	5.2	1.2×10⁵
CYRIC	Japan	50~8520~50	3(H⁺)10(H^-)	1	1.0	1.0×10⁶~10⁷

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