Advanced radiation protection?

In order to have radiation-free nuclear reactions (the purported LENRs, "cold fusion") it would be necessary that "...one could fractionate such large MeV quanta into millions or even billions of smaller quanta." (P. L. Hagelstein, Infinite Energy,  issue 112, pg 12, 2013, see also my sci.physics.fusion post of 1 April 2004 and paper in Kansas Sci. Teacher, vol. 7, pg 12, 1990)  If one had such a mechanism it might be even more important for use as general radiation shielding.