ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
Latest Magazine Issues
Apr 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
June 2025
Nuclear Technology
Fusion Science and Technology
May 2025
Latest News
ANS designates Armour Research Foundation Reactor as Nuclear Historic Landmark
The American Nuclear Society presented the Illinois Institute of Technology with a plaque last week to officially designate the Armour Research Foundation Reactor a Nuclear Historic Landmark, following the Society’s decision to confer the status onto the reactor in September 2024.
Hideo Hirayama, Yoshiko Harima, Yukio Sakamoto, Naohiro Kurosawa, Makoto Nemoto
Nuclear Technology | Volume 168 | Number 3 | December 2009 | Pages 901-905
Dose/Dose Rate | Special Issue on the 11th International Conference on Radiation Shielding and the 15th Topical Meeting of the Radiation Protection and Shielding Division (PART 3) / Radiation Protection | doi.org/10.13182/NT09-A9325
Articles are hosted by Taylor and Francis Online.
Line-beam response function (LBRF) and conical-beam response function (CBRF) data for gamma-ray skyshine are generated using the EGS4 code in an arbitrary geometry for energies ranging from 0.1 to 10 MeV at all the emitted angles up to a distance of 2000 m from the source. The skyshine dose is calculated for the air kerma, exposure, ambient dose equivalent H*(10), and effective dose E with anterior-posterior and isotropic irradiation geometries.A response function with a four-parameter empirical formula,R(E,,x) = [fraktur R]E(/0)2 exp(a + cx/0)xb+dx/0,can be used to approximate the LBRF and CBRF with good accuracy. The values of the four parameters a, b, c, and d are determined for a given beam energy and direction by fitting the four-parameter function such that the maximum fractional deviation of the LBRF and CBRF values is minimized for a set of discrete source-to-detector distances. The parameter set is selected to realize the interpolation of LBRF and CBRF in relation to the energy and direction by the interpolation of these parameters. Consequently, discrete LBRF and CBRF data are converted to continuous data with regard to both energy and direction.The evaluation of gamma-ray skyshine dose analyses can be accomplished easily and quickly by using the four-parameter formula.These data can be downloaded in Excel format from http://rcwww.kek.jp/rc_en.html as "Data Library of Line- and Conical-Beam Response Functions and Four-Parameter Empirical Formula in Approximating Response Functions for Gamma-Ray Skyshine Dose Analyses."
