Hi, Issue coming from the forum, https://geant4-forum.web.cern.ch/t/tm162-missing-from-radioactivedecay-5-6-database/11386 The file corresponding to 162Tm radioactive decay is missing in the latest versions of Geant4 data libraries I have checked in cvmfs, and the file used to exist in version 3 of RadioactiveDecay, but not in later versions 4 and 5 /cvmfs/geant4.cern.ch/share/data/RadioactiveDecay3.6/z69.a162 /cvmfs/geant4.cern.ch/share/data/RadioactiveDecay3.7/z69.a162 /cvmfs/geant4.cern.ch/share/data/RadioactiveDecay3.4/z69.a162 /cvmfs/geant4.cern.ch/share/data/RadioactiveDecay3.3/z69.a162 /cvmfs/geant4.cern.ch/share/data/RadioactiveDecay3.2/z69.a162 /cvmfs/geant4.cern.ch/share/data/RadioactiveDecay3.5/z69.a162 Best, Alvaro
File from RadioactiveDecay version 3.7 seems to work ok