Title of article
Application of very low energy neutron radiography with energy selection system using 4Qc(4m) supermirror
Author/Authors
Kawabata، نويسنده , , Yuji and Hino، نويسنده , , Masahiro and Nakano، نويسنده , , Takafumi and Sunohara، نويسنده , , Hiroaki and Matsushima، نويسنده , , Uzuki and Geltenbort، نويسنده , , Peter، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
7
From page
61
To page
67
Abstract
A high contrast neutron CT system is installed in the VCN/PF2 port of Institut Laue-Langevin and VCN port of Kyoto University Reactor (KUR). A converter+C-CCD system is used for the image detection. This system has an option of the energy selection system by neutron reflection on a 4Qc (4m) supermirror. The critical angle of the neutron reflection on this mirror is four times larger than that of natural nickel and the diameter is 20 cm. As the neutron reflection on a mirror removes faster neutrons, it can be used as a low pass filter of the neutron energy. The upper limit of the reflected neutron energy can be easily changed by the rotation of the mirror. As the application of this high contrast imaging system, the density nonuniformity of an aluminum welding sample can be shown by the refraction effect of very cold neutrons in VCN/PF2/ILL.
Keywords
Very cold neutrons , Neutron refraction , Supermirror , Neutron radiography
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Serial Year
2005
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Record number
2203343
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