Transparent Solid-State Lithiated Neutron Scintillators Based on Self-Assembly of Polystyrene-block-poly(ethylene oxide) Copolymer Architectures


  • The Oak Ridge National Laboratory is managed for the Department of Energy under contract No. DE-AC05-00OR22725 by UT-Battelle, LLC. Funding for this work is through the support of the Department of Energy NA-22. This research was supported in part by the appointments for H.-J. Im and S. Saengkerdsub to the ORNL Research Associate Program, administered jointly by ORNL and Oak Ridge Institute for Science and Education. The authors thank Carl Willis for assembling a portable pulse-height analysis system.


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A new transparent neutron-scintillating material has been developed based on polystyrene-block-poly(ethylene oxide). The unique self-assembly structure of the block copolymer makes it possible to dope hydrophilic Li+ in the ethylene-oxide domain and hydrophobic organic fluors in the styrene domain (see Figure).