| Autor: |
Bagryansky, Victor A., Borovkov, Vsevolod I., Molin, Yuri N. |
| Zdroj: |
Applied Magnetic Resonance; May2022, Vol. 53 Issue 3-5, p581-593, 13p |
| Abstrakt: |
The spin evolution of an ensemble of immobile radical ion pairs, assuming different rate constants of the pair recombination in the singlet (kS) and triplet (kT) spin states, was investigated for an arbitrary initial state in the absence of paramagnetic relaxation. An analytical solution was obtained for the density matrix of a radical pair at the constant frequency of singlet–triplet transitions. This solution was applied to study how the shape of the curves of the time-resolved magnetic field effect (TR MFE), defined as the ratio of the recombination rates of the pairs in different magnetic fields, depended on the value of k = kS − kT in the presence of hyperfine and Zeeman interactions. The former were taken into account using a semi-classical model. It was shown that the shape of TR MFE curves changed dramatically at k ≠ 0 as compared to the case of k = 0. Experimental schemes aimed to reveal the spin-dependent recombination using the TR MFE approach were proposed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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