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The next opportunity to earn professional engineer (PE) licensure in nuclear engineering is this fall, and now is the time to sign up and begin studying with the help of materials like the online module program offered by the American Nuclear Society.
Yutaka Furuta, Yoshihiko Kanemori
Nuclear Science and Engineering | Volume 30 | Number 2 | November 1967 | Pages 261-267
Technical Paper | doi.org/10.13182/NSE67-A17336
Articles are hosted by Taylor and Francis Online.
Gamma-ray dose rates from a 60Co cylindrical source were obtained experimentally in the radial direction at the half-height of the source. The concept of the dose buildup factor was introduced for a volume source. The dose buildup factor for a cylindrical source, which is represented as a function of the distance between source and detection point, has a value of about five at the point nearest to the source surface. The factor then decreases rapidly, passes through a minimum value, and approaches a constant value. These features were analyzed experimentally with a line and a disk source. An empirical formula for the dose buildup factor is proposed which agrees with the experimental values to within about ± 15%.
