A Feasibility Study of a Medical Application of Cylindrical Discharge Type Fusion Neutron Beam Source

摘要

The present study aims to investigate the feasibility of a cylindrical type electric discharge nuclear fusion neutron beam for Boron Neutron Capture Therapy (BNCT). The MCNP5 code estimates the neutron transportation in a human brain phantom which consists of the skull (Ca), the brain (water), and the tumor affected part (~(10)B). Monochromatic neutron sources (10~6 neutrons per second) with incidence of arbitrary energy spectra (14 MeV, 2.45 MeV, 100 keV, 10 keV, 1 keV, 100 eV, 10 eV, 1 eV, 0.1 eV, 0.01 eV, monochromatic each) are examined. The result indicates that to the 8 cm-deep affected part, epithermal neutron with the energy near 10 keV is suggested to be effective to penetrate and maximum dose by the capture reaction by boron in medical treatment.