WU Yang DOU Haifeng TANG Bin HUO Heyong. Concept design of moderation collimator for a minitype neutron radiography system[J]. Nuclear techniques, 2011, 34(10): 755-758.
WU Yang DOU Haifeng TANG Bin HUO Heyong. Concept design of moderation collimator for a minitype neutron radiography system[J]. Nuclear techniques, 2011, 34(10): 755-758.DOI:
For designing a minitype neutron radiography system
which is advantageous in detecting large or irremovable objects.a shielding collimator was simulated with the MCNP code.U-238 and high density polyethylene were chosen to moderate 14 MeV neutrons to 3 MeV.Graphite and CH-B were used as reflect layer and shielding layer
respectively.With the optimized design parameters
as the results show
the neutron radiography system can provide a neutron flux of up to 104 cm?2.s?1