Spur-like trapping

We present ESR applications to radiation effects of polymer materials in this section. The ESR spectral analyses of the polymer radicals produced are described in relation to the geometrical structure of the free radicals and the polymer structure of the crystalline and non-crystalline regions. The decay reaction, radical migration and pair-wise trappings of the polymer radicals are discussed. Eurthermore, inhomogeneous spur-like trapping of polymer radicals by irradiation are presented. Eor simplicity, the study of the free radicals in solid polyethylene is the primary example given. 

Inhomogeneous Spur-Like Trapping of Free Radicals by Irradiation of Polymers with Ionizing Radiation... 

We shall now address ourselves to the fate of the secondary electrons trapped in phases A and B following their release from these traps on warm-up of the sample to T > Tg and Tg . The electrons trapped in phase A should more or less all combine with ions present in the same phase. Very likely they will combine with the parent ion IjJ from which the electron originated or with an ion /a belonging to a cluster of ions formed along with the parent ion by a 8 electron of higher energy. Those electrons which transferred and were trapped in phase B could in principle recombine with ion Ib of the B phase. Again, however, it is probable that most of these electrons, attracted by the Coulomb field of their parent ions or of ions of the parent spur, will return to phase A and recombine there. The reason for this is that once an electron is released from one... 

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