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Re: P-32 LSC efficiency



The Cherenkov radiation appears in the H-3 region.  It appears as low energy
radiation because there are few photons per "event".  To see the effect,     
dissolve P-32 in water and count this solution; lacking scintillant, all you
will see is the Cherenkov.  According to an LSC short course that I recently
attended at Packard, Cherenkov counting is about 53% efficient.

___________________________________________________________________

Don Jordan                          Tel. (312) 702-6299
Office of Radiation Safety          Fax        702-4008
The University of Chicago           email: don@radpro.uchicago.edu
1101 East 57th Street, Room 11
Chicago, Illinois  60637  
                -- Any opinions are the author's --