Molybdenum-99 production via lead and bismuth moderators and milli-structure-98Mo samples by indirect production technique using Monte Carlo method
A. Khorshidi Gerash University of Medical Sciences, Imam Hussain (AS) Blv, Student Blv, Gerash, 74417-58666, Iran
This study describes the design of a neutron activator that contains a beryllium target, a lead/bismuth moderator, graphite/PbF2 reflectors, and a boron absorber. Production of 99 Mo isotope using millimeter-sized 98 Mo samples located in various regions of the activator under study was also simulated using the MCNPX-code. If the 98Mo samples are placed in the reflector region, the yield increases due to a larger flux of epithermal neutrons.
Keywords: neutron activator, neutron moderator materials, adiabatic resonance crossing, radioisotope production, molybdenum transmutation, nuclear medicine, Monte Carlo method PACS:28.60.+s, 29.25.−t, 87.57.U− (all) DOI:10.3367/UFNe.2018.09.038441 URL: https://ufn.ru/en/articles/2019/9/f/ Citation: Khorshidi A "Molybdenum-99 production via lead and bismuth moderators and milli-structure-98Mo samples by indirect production technique using Monte Carlo method" Phys. Usp.62 931–940 (2019)