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ID: 17050.0, MPI für biophysikalische Chemie / Spektroskopie und photochemische Kinetik (Prof. Jürgen Troe)
On the applicability of the average exchange model for electron spin polarization phenomena
Authors:Neufeld, A. A.; Christensen, M.; Pedersen, J. B.
Language:English
Date of Publication (YYYY-MM-DD):2002-05
Title of Journal:Molecular Physics
Volume:100
Issue / Number:9
Start Page:1421
End Page:1430
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:The applicability of the average exchange model as a tool for describing electron spin polarization in micelles is investigated by comparison with analytical and numerical results. The analytical results are used for the interpretation of the various types of dependence, while the numerical results are used for quantitative tests. It is demonstrated that the dephasing effect of the exchange interaction has a significant influence both on the time dependence and on the stationary value of the polarization. Dephasing arising from the exchange interaction is not included in the average exchange model, and therefore the spin dynamics are not described correctly. The average exchange model can only be used to estimate the frequency and the stationary value of the polarization, and only in the case of very slow singlet-triplet mixing, weak exchange interaction, and low reactivity of the radicals.
Comment of the Author/Creator:Date: 2002, MAY
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für biophysikalische Chemie/Abt. Jürgen Troe / 010
External Affiliations:Univ So Denmark, Dept Phys, DK-5230 Odense M, Denmark; Univ So Denmark, Dept Phys, DK-5230 Odense M, Denmark
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