Abstract
Studies were carried out to design a collimator which results in epithermal neutron beam for in vivo experiment of Boron Neutron Capture Therapy (BNCT) at the Kartini Research Reactor by means of Monte Carlo N-Particle (MCNP) codes. Reactor within 100 kW of thermal power was used as the neutron source. All materials used were varied in size, according to the value of mean free path for each material. MCNP simulations indicated that by using 6 cm thick of Natural Nickel as collimator wall, 65 cm thick of Al as moderator, 3 cm thick of Ni-60 as filter, 6 cm thick of Bi as γ-ray shielding, 3.5 cm thick of Li<sub>2</sub>CO<sub>3</sub>-polyethilene, with 2 cm aperture diameter. Epithermal neutron beam with maximum flux of 6.60 x 10<sup>8</sup>n.cm<sup>-2</sup>.s<sup>-1</sup> could be produced. The beam has minimum fast neutron and γ-ray components of, respectively, 1.82 x 10<sup>-13</sup>Gy.cm<sup>2</sup>.n<sup>-1</sup> and 1.70 x 10<sup>-13</sup> Gy.cm<sup>2</sup>.n<sup>-1</sup>, minimum thermal neutron per epithermal neutron ratio of 0.041, and maximum directionality of 2,12. It did not fully pass the IAEA’s criteria, since the epithermal neutron flux was below the recommended value, 1.0 x 10<sup>9</sup> n.cm<sup>-2</sup>.s<sup>-1</sup>. Nonetheless, it was still usable with epithermal neutron flux exceeding 5.0 x 10<sup>8</sup> n.cm<sup>-2</sup>.s<sup>-1</sup>. it is still feasible for BNCT in vivo experiment.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Indonesian Journal of Physics and Nuclear Applications
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
