Comparison Between the NIST and the KEBS for the Determination of Air Kerma Calibration Coefficients for Narrow X-Ray Spectra and (137)Cs Gamma-Ray Beams.

IF 1.5 4区 工程技术
Michelle O'Brien, Ronaldo Minniti, Stanslaus Alwyn Masinza
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引用次数: 0

Abstract

Air kerma calibration coefficients for a reference class ionization chamber from narrow x-ray spectra and cesium 137 gamma-ray beams were compared between the National Institute of Standards and Technology (NIST) and the Kenya Bureau of Standards (KEBS). A NIST reference-class transfer ionization chamber was calibrated by each laboratory in terms of the quantity air kerma in four x-ray reference radiation beams of energies between 80 kV and 150 kV and in a cesium 137 gamma-ray beam. The reference radiation qualities used for this comparison are described in detail in the ISO 4037 publication.[1] The comparison began in September 2008 and was completed in March 2009. The results reveal the degree to which the participating calibration facility can demonstrate proficiency in transferring air kerma calibrations under the conditions of the said facility at the time of the measurements. The comparison of the calibration coefficients is based on the average ratios of calibration coefficients.

NIST与KEBS测定窄x射线光谱和(137)Cs伽玛射线束空气克尔玛校准系数的比较
比较了美国国家标准与技术研究所(NIST)和肯尼亚标准局(KEBS)对窄x射线光谱和铯137伽玛射线光束的参考级电离室的空气克尔玛校准系数。每个实验室根据能量在80千伏至150千伏之间的四个x射线参考辐射束和铯137伽马射线束中的空气克玛量校准了NIST参考级转移电离室。用于此比较的参考辐射质量在ISO 4037出版物中有详细描述。[1]对比开始于2008年9月,并于2009年3月完成。结果显示参与校正设施在进行测量时,在该设施的情况下,能熟练地传送空气湿度校正值的程度。校正系数的比较是基于校正系数的平均比率。
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来源期刊
自引率
33.30%
发文量
10
期刊介绍: The Journal of Research of the National Institute of Standards and Technology is the flagship publication of the National Institute of Standards and Technology. It has been published under various titles and forms since 1904, with its roots as Scientific Papers issued as the Bulletin of the Bureau of Standards. In 1928, the Scientific Papers were combined with Technologic Papers, which reported results of investigations of material and methods of testing. This new publication was titled the Bureau of Standards Journal of Research. The Journal of Research of NIST reports NIST research and development in metrology and related fields of physical science, engineering, applied mathematics, statistics, biotechnology, information technology.
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