γ線照射装置による校正場の散乱線の評価 Estimation of the Scattered Radiations in the Calibration Field Generated by the Gamma-Ray Irradiation System

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A description follows of an operational-standard irradiation field that has been established by using gamma-ray sources installed at the Radioisotope Research Center of Osaka University. The irradiation system is composed of an irradiator mounted with <sup>60</sup>Co (3.7GBq) and <sup>137</sup>Cs (11.1GBq and 111GBq), and a mobile exposure deck having a lead shield sandwiched with iron at the back side. The irradiator was provided with three kinds of square collimators around the irradiator beam exit. It is the purpose of the present study to utilize the irradiation system for the calibration of commercially manufactured gamma-ray dosimeters. Estimation of the scattered radiation of an irradiation field was achieved by both measurements and calculations. The absorbed dose rates due to the sources mounted in the irradiator were determined with a calibrated ionization chamber, and the contribution of scattered photons from the irradiator equipment was confirmed to be minimal by calculations with a radiation transport code.

収録刊行物

  • 保健物理 : hoken buturi  

    保健物理 : hoken buturi 31(3), 343-347, 1996-09 

    Japan Health Physics Society

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各種コード

  • NII論文ID(NAID)
    10002136047
  • NII書誌ID(NCID)
    AN00228458
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03676110
  • NDL 記事登録ID
    4056570
  • NDL 雑誌分類
    ZN36(科学技術--原子力工学・工業) // ZS45(科学技術--医学--放射線医学)
  • NDL 請求記号
    Z16-696
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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