The method 1, wherein during irradiation the biomass feedstock is conveyed past a particle gun and through {HEAD ~ a beam} of {TAIL ~ electrons} 
of
The method 1 , wherein during irradiation the biomass feedstock is conveyed past a particle gun and through { HEAD ~ a beam } of { TAIL ~ electrons }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL