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Re: C_x and C_k



     The ANSI N13.11-1983 and 1993 version does not include Co-60.
     
     The following is from Table 6C .. Dose Equivalent Conversion Factors 
     and Angular Response Functions ... ICRU Tissue Sphere Phantom at 10 mm 
     (ambient) and 0.07 mm (Directional) Depths for NIST Lightly Filtered, 
     Specially Filtered Beams and Isotropic Sources..
     
     Co-60  Deep Ck (Sv/Gy) = 1.169             Shallow Ck (Sv/Gy) = 1.389
      
     compared to Cs-137 = 1.202                                     = 1.349
     
     Hope this helps
     


______________________________ Reply Separator _________________________________
Subject: C_x and C_k
Author:  radsafe@romulus.ehs.uiuc.edu at Internet-Mail
Date:    6/16/95 4:02 PM


     Dear RADSAFErs,
     
     What is C_x (per ANSI N13.11-1983) and C_k (per ANSI N13.11-1993) for 
     Co-60 photons?  What is Co-60 C_x (1983) converted to C_k (1993)?
     
     Thank you in advance.
     Tosh Ushino
     ushinot@songs.sce.com