Related Experiment Video
Updated: Jun 23, 2026

Neutron Crystallography Data Collection and Processing for Modelling Hydrogen Atoms in Protein Structures
Published on: December 1, 2020
Neutron dose per fluence and weighting factors for use at high energy accelerators
J Donald Cossairt1, Kamran Vaziri
1Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, IL 60510, USA. cossairt@fnal.gov
Abstract:
In June 2007, the United States Department of Energy incorporated revised values of neutron weighting factors into its occupational radiation protection regulation Title 10, Code of Federal Regulations Part 835, as part of updating its radiation dosimetry system. This has led to a reassessment of neutron radiation fields at high energy accelerators such as those at the Fermi National Accelerator Laboratory (Fermilab) in the context of the amended regulation and contemporary guidance of the International Commission on Radiological Protection (ICRP). Values of dose per fluence factors appropriate for accelerator radiation fields calculated elsewhere are collated and radiation weighting factors compared. The results of this revision to the dosimetric system are applied to americium-beryllium neutron energy spectra commonly used for instrument calibrations. Also, a set of typical accelerator neutron energy spectra previously measured at Fermilab are reassessed in light of the new dosimetry system. The implications of this revision and of recent ICRP publications are found to be of moderate significance.
Related Concept Videos
Biological Effects of Radiation
Nuclear Transmutation
Types of Radioactivity
Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay:
Radioactivity and Nuclear Equations
A nuclide of an element has a specific number of protons and...
Nuclear Fission
Nuclear Stability
To hold positively charged protons together in the...
