論文

2011年7月

Development of a Small-Aperture Slit System for a High Collimator Ratio at the Thermal Neutron Radiography Facility in JRR-3

JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
  • Ryo Yasuda
  • ,
  • Takehiro Nojima
  • ,
  • Hiroshi Iikura
  • ,
  • Takuro Sakai
  • ,
  • Masahito Matsubayashi

48
7
開始ページ
1094
終了ページ
1101
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.3327/jnst.48.1094
出版者・発行元
TAYLOR & FRANCIS LTD

A small-aperture slit system has been developed and installed to enhance the collimator ratio ("L/D") of the thermal neutron radiography facility (TNRF) in JRR-3. The degree of unsharpness on neutron images is reduced by increasing the LID. The small-aperture slit system increased the LID by creating a small aperture size ("D"). Image sharpness improved when the aperture size was reduced to below 10 mm by 1 0 mm in the TNRF. On the other hand, there was almost no difference in unsharpness on images obtained above 10 mm by I 0 mm in aperture size. These results indicate that an aperture size of less than 10 mm by 10 mm should be used for high-spatial-resolution imaging at the TNRF. The beam area of the small-aperture slits was relatively small in comparison with that of a conventional large collimator, though gradually increasing with increasing aperture size. Even with an aperture size of 5 mm by 5 mm, the practical beam area for imaging examinations corresponded to around 25 mm by 20 mm, which is enough area to carry out high-spatial-resolution imaging.

リンク情報
DOI
https://doi.org/10.3327/jnst.48.1094
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000294524100013&DestApp=WOS_CPL
ID情報
  • DOI : 10.3327/jnst.48.1094
  • ISSN : 0022-3131
  • eISSN : 1881-1248
  • Web of Science ID : WOS:000294524100013

エクスポート
BibTeX RIS