Lithium and Zinc Sulfide Coated Plastic Neutron Detector Test

Kouzes, Richard T. ; Ely, James H.

Pacific Northwest National Laboratory (U.S.)

关键词: Plastics;    Testing;    Availability;    Zinc Sulfides Neutron Detection;    Sensitivity;   

DOI  :  10.2172/991090
RP-ID  :  PNNL-19566
RP-ID  :  AC05-76RL01830
RP-ID  :  991090

美国|英语

来源: UNT Digital Library

【 摘 要 】

Radiation portal monitors used for interdiction of illicit materials at borders include highly sensitive neutron detection systems. There is a declining supply of 3He in the world, and thus, methods to reduce the use of this gas in RPMs with minimal changes to the current system designs and sensitivity to cargo-borne neutrons are being investigated. Four technologies have been identified as being currently commercially available, potential alternative neutron detectors to replace the use of 3He in RPMs. In addition, a few other companies have detector technologies that might be competitive in the near term as an alternative technology. Reported here are the results of tests of 6Li/ZnS(Ag)-coated scintillator paddles. This testing measured the required performance for neutron detection efficiency and gamma ray rejection capabilities of a system manufactured by Symetrica.