ZnS and LiF based Neutron Detectors

The BC-700 series plastic scintillators are formulated for the efficient detection of neutrons in the presence of gamma radiation. They can be coupled directly to a photomultiplier tube or light guide. A variety of detector materials are offered for Thermal and Fast Neutron detection. These can be grouped into two categories according to their response to neutron and gamma radiation:

Fast Neutron Detection

• BC-720 consists of ZnS(Ag) phosphor embedded in a clear hydrogenous plastic.

Thermal Neutron Detection

• BC-702 is a matrix of a lithium compound enriched to 95% 6Li dispersed in a fine ZnS(Ag) phosphor powder.
• BC-704 is a phosphor screen based on ZnS(Ag) and 6Li.
• BC-705 is a phosphor screen based on zinc sulfide activated with copper, i.e., ZnS(Cu)
• NeuPort / NeuTruck is a 6LiF/ZnS(Ag) based neutron detector to replace He3 tube in Radiation Portal and Mobile Monitors.  Proprietary Pulse Shape Discrimination (PSD) algorithm is employed to count neutrons and reject gamma ray events.