Trapped and Solvated Electrons at Low Temperatures

Gillis, 1969 Baxendale and Rasburn, 1974 Baxendale and Wardman, 1971 Baxendale et al, 1971, 1973). However, it may be best to consider these cases as extensions of the trapped electron in low-temperature matrices. 

It is not surprising that addition of hole traps will increase the metastable yield of et (Gallivan and Hamill, 1966 Bonin et al., 1968). The yield of e( becomes sublinear at doses -1020 eV g-1, reaches a peak, and eventually decreases at very high doses. There are three possible explanations (1) reaction with radiation products (Eckstrom et al., 1970) (2) electron tunneling to radiation-produced scavengers (Miller, 1972) and (3) dielectron formation (Feng et al., 1973). 

FIGURE 6.4 A typical trapped electron absorption spectrum in ethanol at 4 K and the corresponding solvated electron spectrum at 77 K. The irradiation is at 4 K in both cases. Reproduced from Hase et a1. (1972a), with permission from Am. Inst. Phys.O 

Kevan (1974) has exhaustively reviewed ein organic glasses, to which the reader s attention is drawn. He points out that the effective spur radius r for trapped electrons may be operationally given in angstroms as 

TABLE 6.4 Radiation Yields (G Values) of Stabilized Electrons in Organic Glasses Under /-Irradiation at 77 K 

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