A Method for Unfolding the Spectrum of Neutron Energies Produced by Medical Linear Accelerators Public Deposited

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Last Modified
  • February 27, 2019
Creator
  • DeForest, William W.
    • Affiliation: Gillings School of Global Public Health, Department of Environmental Sciences and Engineering
Abstract
  • The use of high energy linear accelerators for radiation therapy has given rise to an unexpected Health Physics concern. These accelerators are designed to produce electrons or photons in excess of 10 MeV. In recent years it has been noted that these accelerators are producing significant fluences of high energy neutrons which contribute greatly to the dose equivalent received by technicians and others in areas adjacent to treatment rooms. Proper shielding of these neutron fluences requires knowledge of the neutron spectrum at barriers to the treatment room. The present paper presents one method by which the neutron spectrum may be unfolded. The method makes use of Bonner Sphere data and matrix inversion computer codes to approximate the spectrum of neutrons produced by medical linear accelerators.
Date of publication
DOI
Resource type
Rights statement
  • In Copyright
Advisor
  • Watson, James E.
  • Crawford-Brown, Douglas J.
  • Turner, Alvis G.
Degree
  • Master of Science in Public Health
Academic concentration
  • Industrial Hygiene
Degree granting institution
  • University of North Carolina at Chapel Hill
Graduation year
  • 1988
Language
Deposit record
  • 4229e0fb-b010-4ede-aa50-9d4a2f0726fb
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