首页> 外文期刊>Radiation Protection Dosimetry >CORRECTION FACTORS FOR ATTENUATION AND SCATTERING OF THE WALL OF A CYLINDRICAL IONIZATION CHAMBER IN THE 6-7 MEV HIGH-ENERGY PHOTON REFERENCE FIELD
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CORRECTION FACTORS FOR ATTENUATION AND SCATTERING OF THE WALL OF A CYLINDRICAL IONIZATION CHAMBER IN THE 6-7 MEV HIGH-ENERGY PHOTON REFERENCE FIELD

机译:6-7 MEV高能光子参考场中圆柱电离室壁的衰减和散射的校正因子

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摘要

In high-energy photon reference fields the value of the air kerma rate is determined by using ionization chambers (ICs). From the charge collected inside the IC the dose can be calculated using a set of calibration and correction factors according to ISO 4037-2. A crucial parameter is the correction for the attenuation and scattering of the primary radiation due to the chamber wall. This parameter can be determined using Monte Carlo calculations. The evaluation of the factor was performed for a commercially available IC of the type Victoreen 550-3 under different build-up conditions. The results were verified by measurements in the R-F high-energy photon fields according to ISO 4037-1 at the Physikalisch-Technische Bundesanstalt (PTB) and the Japan Atomic Energy Agency (JAEA).
机译:在高能光子参考场中,通过使用电离室(IC)确定空气比释动能率的值。从IC内部收集的电荷中,可以根据ISO 4037-2使用一组校准和校正因子来计算剂量。一个关键参数是对由于腔室壁引起的主辐射的衰减和散射的校正。可以使用蒙特卡洛计算确定该参数。对于市售的Victoreen 550-3型IC,在不同的堆积条件下进行了因子评估。通过物理物理学技术联合会(PTB)和日本原子能机构(JAEA)根据ISO 4037-1在R-F高能光子场中的测量来验证结果。

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  • 来源
    《Radiation Protection Dosimetry》 |2018年第1期|48-56|共9页
  • 作者

    M. Kowatari; H. Zutz; O. Hupe;

  • 作者单位

    Department of Radiation Protection, Nuclear Science Research Institute, Japan Atomic Energy Agency (JAEA), 2-4, Shirakata, Tokai, Naka, Ibaraki 319-1195, Japan;

    Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany;

    Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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