Abstract
Abstract
The total yield of photoneutrons from soft-tissue-equivalent material irradiated with bremsstrahlung of end point energy from 6 MeV to 28 MeV has been measured using the 35 MeV University of Melbourne Betatron and a 4p Halpern type neutron detector. The results are compared with calculations based on the cross sections for neutron production of the constituent elements of tissue (H, C, N and O). It is shown that the less common isotopes of the constituent elements (2H, 13C, 15N, 17O, 18O) must be included to obtain agreement with the measured yields. The dose imparted to tissue by the photoneutrons is estimated for the energy range from 6 MeV to 30 MeV and compared with other available measurements/estimations. Further, the dose equivalent due to all photonuclear reactions in tissue is estimated for energies of 24 MeV and 30 MeV.
Publisher
Oxford University Press (OUP)
Subject
Public Health, Environmental and Occupational Health,Radiology, Nuclear Medicine and imaging,General Medicine,Radiation,Radiological and Ultrasound Technology
Cited by
1 articles.
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