Direct Observation of HO 2 /O 2 - Free Radicals Generated in Water by a High-Linear Energy Transfer Pulsed Heavy-Ion Beam

The formation and decay of ${\rm HO}_{2}/{\rm O}{}_{2}{}^{-}$ radical from the radiolysis of water by heavy ${}^{36}{\rm S}{}^{16+}$ ions (2.7 GeV) have been ob...