5.9 keV photons/s/sr on 01-nov-02 is 1629000.,,,,,,,,,,,,,,,,, Half-life of Fe-55 is 947 days.,,,,,,,,,,,,,,,,, File Name,Source,Gamma Energy ,Date,Collection Time,No. Photons ,No. Photons,Deviation ,Distance (cm),Angle (Deg),Solid Angle,Transmission,Live Time,Intrinsic Peak,Deviation ,File Name,,total ,,(keV),,(s),Emitted,in Peak,Photons in Peak,,,(steradians),,,Efficiency,Int Peak Eff,,,% losses SAX-em02,Fe-55,5.9,23-Dec-03,36000.00,5.43E+11,2.18E+06,1.48E+03,18.4,0,5.139E -05,1.000,1.000,0.982,0.0007,SAX-em02,,0 ,,,,,,,,,,,,,,,,,