No abstract

No abstract

Garmna irradiation at 77°K of organic glassy solids which contain solutes RX or M provide evidence for the formation of R and X-by dissociative electron attachment, M-by simple electron attachment and M+ by charge exchange with appropriate components of the matrix. Benzyl chloride and naphthalene illustrate the two types of solute. Detection in all cases was based upon electronic absorption spectra. Failure to observe M+ in ethanol and other polar media indicates efficient formation of such protonated species as RQHZ. Benzyl radicals were observed in glassed ethanol containing benzyl acetate following gamma irradiation and equivalent yields of acetic acid were found in the subsequently thawed samples. It appears that ionic processes may play a major role in radiation chemistry.

No abstract

Photoionization of S,S-dimethyl-p-phenylenediamine occurs in polar glasses at V°K . but not in pure hydro-Addition of electron-accepting solutes greatly enhances photoionization yields in polar glasses, but ?-Irradiation produces much higher In both types of media yields can be enhanced Results of yirradiation indicate carbons only the more easily reduced of these enhance yields in nonpolar glasses. yields of amine cation in nonpolar glasses than in polar glasses by addition of electron acceptors, but yields are much smaller in polar glasses. that charge transfer is very largely responsible for amine cation j-ields.