The influence of the presence or absence of a neutron reflector on the critical mass of uranium

چکیده مقاله

To increase productivity and improve the neutron economy in the reactor, neutron reflection is used. This reflectors cause lack of neutron leakage and reactor fuel can reach critical mass faster. Various materials such as beryllium, neutron, carbon, water, lead and so on could satisfy this property. In this paper, by using the MCNP code, critical mass of uranium in the term of percent of enrichment for different reflectors is obtained. The results show beryllium, carbon and deuterium are an excellent choice for this purpose. Also increasing the thickness of the neutron reflector causes an increase in neutron multiplication factor.

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