Abstract
Abstract The build-up stage of short-lived excitons corresponds to the accumulating stage of the absorbed dose at the same region. Hence sequential observation of the former stage would make it possible to pursue the temporal variation of the accumulating absorbed dose. A pulse radiolysis system enables one to obtain the transient depth-dose profile in a sample irradiated with high energy electrons of 20 ps pulse duration by measuring the build-up process of the optical density through the sample. It has been observed that the electron energy is deposited to a certain depth in about 100 ps after the primary electrons have passed through that region. This means that the energy deposition is mainly attributed not to the primary electrons but to the slower secondary ones.
Published Version
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