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Calculations of Fluence Rates of Unscattered X- and Gamma-Ray Photons Emerging From Model Spheres of Special Nuclear Material

Published

Author(s)

Stephen M. Seltzer

Abstract

Calculations have been done to develop estimates of the fluence rate of unscattered x and gamma rays emerging from two model spheres of special nuclear material: one of uranium enriched to 93.5% by weight of U-235; one of plutonium enriched to 6.0% by weight of Pu-240.
Citation
NIST Interagency/Internal Report (NISTIR) -
Volume
7557

Keywords

fluence rate, highly enriched uranium, photons, radionuclides, spheres, weapons-grade plutonium

Citation

Seltzer, S. (2009), Calculations of Fluence Rates of Unscattered X- and Gamma-Ray Photons Emerging From Model Spheres of Special Nuclear Material, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=901131 (Accessed October 24, 2021)
Created November 30, 2009, Updated February 19, 2017