Albedo Component of Gamma-Ray Streaming through Straight Cylindrical Ducts

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概要

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• An experimental study was performed to investigate the effect of γ-ray streaming through cylindrical steel and lead ducts having various lengths and radii. In the experiment, <SUP>60</SUP>Co and <SUP>137</SUP>Cs point sources, and small sized detector (pulse dosimeter with plastic scintillator) was adopted, source and detector being located at the centers of opposite duct mouths. The albedo-to-direct component ratio is about 30% for steel ducts and 10% for lead at γ-ray energies of 1.25 and 0.661 MeV, with L/R0-10.<BR>The measured results were compared with those calculated by the Monte Carlo method; they showed a good agreement. Consequently, the prediction of doses for straight cylindrical ducts having various length-to-radius ratios can be made by the procedures based on the Monte Carlo calculations.

• 一般社団法人 日本原子力学会の論文

著者

• MIYASAKA Shun-ichi

  Japan Atomic Energy Research Institute

• MIYAKOSHI Jun-ichi

  Technical Research Laboratory, Hitachi Zosen, Ltd.

• TSURUO Akira

  Japan Atomic Energy Research Institute

関連論文

• Experimental investigation of neutrons penetrating through two-dimensional heterogeneous structure consisting of graphite and aluminum.
• Albedo Component of Gamma-Ray Streaming through Straight Cylindrical Ducts

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