Abstract
Coded source imaging is a possible technique to improve the quality of neutron imaging based on compact neutron sources. Experiments of coded source imaging were carried out on PKUNIFTY. It is the first time that coded source neutron imaging is applied on a compact accelerator-driven neutron source. In order to meet the requirements of coded source neutron imaging, the moderator was tried to be modified to deliver an evener neutron beam. The preliminary experimental results were successfully reconstructed with wiener filter deconvolution and Lucy-Richardson maximum likelihood iteration algorithm. The reconstructed results are not good enough in these experiments due to the low neutron fluence and the epithermal neutron interference. The numerical simulation shows that it could be improved by increasing the neutron fluence.
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