Isotopes in natural environment

[LAM HOI CHING <lamhc@HKUSUA.HKU.HK>]

Dear radsafers,

    Several peaks have been detected in the whole body counter, but some of

the peaks I can't identify it now, could anybody give me the anwers. 

Thank you.



Recorded peak in whole body counter by Ge detector                     Isotope

----------------------------------------------------------------------

               ------------

352.2 keV

                     Pb-214 ( Ra B)

609.4keV

                     Bi-214 (Ra C)

1764.4keV

                    Bi-214 (RaC)



670.4keV

                   unknown

911.5keV

                   unknown

1592.7keV

                  unknown



I search those peaks in the following website but there are too plenty

possibilities

http://nucleardata.nuclear.lu.se/Scripts/database/nudat/Gamma.idc



Could anybody give me advice on this? Thank you



John Lam, Physicist, Eastern Hospital, Hong Kong



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