Once the 20ci neutron source in the working state, the neutron emission rate is high, and the radiation to source chamber is large. A long time in the process of using the neutron source will bring about inevitable effects staffs in the source chamber and the sur- rounding environment. For the protection of the safe use of neutron sources, to meet safety standards and radiation protection optimization requirements, this paper discussed the effect of a research sources on the surrounding distribution of radiation dose, radiation source distribution Of our field testing and data analysis researc...
