Re: scintillator questions

[JPreisig@AOL.COM]

Hello Radsafers:



      This is from:   jpreisig@aol.com    .



      Some discussion of various scintillators can be found in the book by 

Knoll

(Radiation Detection and Measurement).  Another good, but older book, is

Accelerator Health Physics by Patterson and Thomas.  



      St. Gobain (a company) manufactures various scintillators (Bicron, Inc.

is now part of this company) --- St. Gobain --- Solon, Ohio.  They probably

have web-pages describing their products.



     One scintillator (???) commonly used in thermal neutron detection 

is LiI(Eu).  LiI(Eu) cylinders are placed in polyethylene spheres (of various

diameters) and are used to count neutrons of various energies.  The LiI(Eu) 

is

usually connected by a light pipe to a photomultiplier tube, etc.  This 

counting

technique is useful in the neutron energy range from thermal neutron

energies to about 20 MeV.



    From 20 MeV to about 400 MeV, one can use a carbon-bearing plastic

scintillator (see Patterson & Thomas for details) to determine neutron

flux densities.



     You are a chemical engineer???  Maybe you should find the local

corporate health physicist for help with this project.....



     Good Luck.





               J.R. Preisig,  Ph.D.







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