No. Z A State Format Library 0001 43 Tc 121 ground ENDF-6 JENDL-5 (decay data) 0002 44 Ru 121 ground ENDF-6 JENDL Decay Data File 2015 0003 44 Ru 121 ground ENDF-6 JENDL FP Decay Data File 2000 0004 44 Ru 121 ground ENDF-6 JENDL FP Decay Data File 2011 0005 44 Ru 121 ground ENDF-6 JENDL-5 (decay data)