A new type personnel neutron dosimeter with thin SI detectors

In this work, a newly developed Si detector system which is capable of distinguishing recoil protons from a hydrogen rich radiator depending on charged particles generated by /sup 6/Li(n, alpha)T nuclear reaction, is investigated, taking essential requirements for personnel dosimeters into account. This dosimeter is a rem counter based on a new principle. It possesses two different target materials and distinguishes low energy neutrons from fast neutrons. The detection efficiency as a function of neutron energy, is in accordance with the ''rem response''. This method makes it possible to make compact personnel neutron dosimeter with sufficient detection efficiency. This paper describes basic characteristics of the new neutron dosimeter and the evaluated results