On the slowing down of 14 MeV neutrons

被引：3

作者：

Flammini, D. ^{[1
]}

Bedogni, R. ^{[2
]}

Moro, F. ^{[1
]}

Pietropaolo, A. ^{[1
]}

机构：

[1] ENEA, Dept Fus & Technol Nucl Safety & Secur, Rome, Italy

[2] Ist Nazl Fis Nucl, Lab Nazl Frascati, Rome, Italy

来源：

JOURNAL OF NEUTRON RESEARCH | 2020年 / 22卷 / 2-3期

关键词：

Fusion neutrons; neutron moderators; Monte Carlo simulations; neutron sources; SPECTROMETRY;

D O I：

10.3233/JNR-190129

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

An experimental procedure is assessed to obtain moderated neutron fields starting from almost monochromatic 14 MeV neutrons generated by means of an accelerator-driven D-T source. The use of a metallic pre-moderator and a standard hydrogen-containing moderator is effective in producing neutron spectra featuring a thermal peak and an epithermal slowing down tail extending up to 14 MeV. The performance of proposed moderation system was investigated by means of MCNP Monte Carlo calculations, benchmarked against experimental measurements using an explorative set up, assembled at the Frascati Neutron Generator. The benchmarked calculations allow at making predictions about the brilliance of a 14 MeV neutron moderator in view of possible applications in neutron science.

引用

页码：249 / 256

页数：8

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