Ionizing radiation distance

The kinetics data of the geminate ion recombination in irradiated liquid hydrocarbons obtained by the subpicosecond pulse radiolysis was analyzed by Monte Carlo simulation based on the diffusion in an electric field [77,81,82], The simulation data were convoluted by the response function and fitted to the experimental data. By transforming the time-dependent behavior of cation radicals to the distribution function of cation radical-electron distance, the time-dependent distribution was obtained. Subsequently, the relationship between the space resolution and the space distribution of ionic species was discussed. The space distribution of reactive intermediates produced by radiation is very important for advanced science and technology using ionizing radiation such as nanolithography and nanotechnology [77,82]. 

Hutchinson, F. (1957). The distance that a radical formed by ionizing radiation and diffuse in a yeast cell. Radiat. Res. 7, 473-483. 

TABLE 22.4 1 Some Properties of Ionizing Radiation Energy Range Penetrating Distance in Water... 

Peroxy entities may also dissociate thermally. In fact, 0 centers have been detected in CaO after rapid quenching from T < 550°C without application of ionizing radiation (20.) Dissociation occurs at the covalent 0-0 bond which is isoelectronic with the F-F bond in the F2 molecule. The 0-0 bond is weak because of the repulsive interaction between the two oxygen nuclei at <1.5 A distance. Dissociation leads to two 0 radicals ... 

B-4) Free radical pairs produced by irradiation of polymers with ionizing radiation and the distance between the paired radicals. 

The first three are immediate, whereas radioactive feUout is a delayed release of energy. The total energy release is expressed in equivalent tons of TNT (Idlotons or megatons). The heat from the explosion travels farther than the blast wave. The ionizing radiation travels the shortest distance, but the radioactive fellout may be carried great distances by the wind. 

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