| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9845559 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2005 | 7 Pages |
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 20Â 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.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
Yuji Kawabata, Masahiro Hino, Takafumi Nakano, Hiroaki Sunohara, Uzuki Matsushima, Peter Geltenbort,