Development and characterization of a D-D fast neutron generator for imaging applications

作者：Adams Robert^*; Bort Lorenz; Zboray Robert; Prasser Horst Michael

来源：Applied Radiation and Isotopes, 2015, 96: 114-121.

DOI：10.1016/j.apradiso.2014.11.017

• D-D neutron generator
• Fast neutron imaging
• Neutron tomography

The experimental characterization of a pulsed D-D fast neutron generator designed for fan-beam tomography applications is presented. Using Monte Carlo simulations the response of an LB6411 neutron probe was related to the neutron generator output. The yield was measured to be up to similar to 10(7) neutrons/s. An aluminum block was moved stepwise between the source and a BC400 plastic scintillator detector in order to measure an edge response. This edge response was related to the neutron emitting spot size using Monte Carlo simulations and a simplified geometry-based model. The experimentally determined spot size of 2.2 mm agreed well with the simulated value of 1.5 mm. The time-dependence of pulsed output for various operating conditions was also measured. The neutron generator was found to satisfy design requirements for a planned fast neutron tomography arrangement based on a plastic scintillator detector array which is expected to be capable of producing 2D tomograms with a resolution of similar to 1.5 mm.

• 出版日期2015-2