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Опубликовано 1998-01-00 На SciPeople2011-04-21 ЖурналRadiation Physics and Chemistry

Study of a fraction of spin-correlated pairs in radiation spurs by the methods of time-resolved magnetic field effects and quantum beats

S. V. Anishchik, O. M. Usov, O. A. Anisimov, Yu. N. Molin / Олег Усов

Аннотация

The fractions Θβ and ΘX of spin-correlated singlet radical-ion pairs in alkane solutions irradiated by β-particles and X-rays were got from experiments on magnetic field effects and quantum beats in recombination fluorescence. The ratio Θβ/ΘX values of 1.3−2.8 for the solvent series studied were found both from magnetic effect and quantum beats. The Monte Carlo calculations were made to explain the variations of Θβ/ΘX in different solvents. The high value of Θβ/ΘX = 2.8 for isooctane is probably due both to large separation between ions in pair and to high concentration of neutral radical in the spur.