Time-resolved measurements of the singlet recombination probability

Given that the validity of formula (16) and the premises of the spin-coherence methods are not obvious, it was important to determine fs for secondary ion pairs in a direct way. The time dependence of the I A and 3 A yields in 0.1 M solutions of biphenyl and napdithalene in cyclohexane, n-hexane, and isooctane was measured [118]. In these solutions, reactions (19), (20), and (21) was over in a fraction of a nanosecond, and reaction (23) was the only source of A and A states between 1 ns and 70 ns. From the derivatives of the G-values of 3A and A, the time-dependent probability ft=l-fs of triplet 

An interesting result that still awaits theoretical explanation is a remarkable similarity in the formation kinetics for and A states 

Radiation chemistry of saturated hydrocarbons is far from being well understood, and is a province of numerous controversies and speculations. No closure is in sight. At the same time, no other medium with exception of liquid water has been studied as comprehensively as liquid alkanes and cycloalkanes. Below, we provide our list of the most important and challenging problems in the radiation chemistry of saturated hydrocarbons  

Several decades ago, picosecond pulse radiolysis was as eagerly anticipated as the femtosecond pulse radiolysis today. Knowing what followed thereafter 

We conclude that putting the emphasis on the time resolution without offering adequate spectroscopic base would ensure a new stalemate. Therefore, the development of fast, highly selective and sensitive techniques for detection of short-lived intermediates in spurs is the most urgent experimental problem in radiolysis of liquids. Ultrafast laser spectroscopy must be utilized to prepare the ground for the ultrafast pulse radiolysis with the development of better detection techniques. 

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