A Calculational Study of Tangential and Radial Beams in HIFAR for Neutron Capture Therapy

  • B. V. Harrington
Part of the Basic Life Sciences book series (BLSC, volume 54)


It is generally accepted that for biological purposes a tangential neutron beam is preferable to a radial beam because of its lower gamma and fast neutron contamination. Nevertheless radial broad spectrum epithermal neutron beams are currently being considered for boron neutron capture therapy of deep-seated tumours since they have the potential to deliver a more intense dose.

A calculational study of a conceptual tangential beam and a filtered radial beam in the DIDO type reactor HIFAR was undertaken. A two-dimensional transport code was used. The tangential beam was found to be superior in therapeutic gain at depth in tissue to an aluminium fluoride (AlF3) filtered radial beam, while the dose rates of the beams were comparable.


Fast Neutron Boron Neutron Capture Therapy Epithermal Neutron Gamma Dose Neutron Dose 
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Copyright information

© Plenum Press, New York 1990

Authors and Affiliations

  • B. V. Harrington
    • 1
  1. 1.Australian Nuclear Science and Technology OrganizationLucas HeightsAustralia

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