No a good conclusion. it can be nuclear without externally visible radiation. Raduation can be stopped (alpha , beta), and phonons could dissipate energy too. neutrons could be slow and undetectable, charged particles could be easily stopped...
let's dont fall in the initial error to apply old vision to new facts , like in 89 2012/8/7 Jones Beene <[email protected]> > > > There is no beta or gamma radiation happening with the excess energy at > all. This is NOT a nuclear reaction. > > Jones > > >

