https://www.nist.gov/publications/calculations-fluence-rates-unscattered-x-and-gamma-ray-photons-emerging-model-spheres
Calculations of Fluence Rates of Unscattered X- and Gamma-Ray Photons Emerging From Model Spheres...
Feb 19, 2017 - 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