Diffusion theory of CIDEP spectra of spin correlated radical pairs
โ Scribed by A.I. Shushin
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 522 KB
- Volume
- 177
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
The antiphase structure (APS) of CIDEP spectra of spin correlated radical pairs in viscous liquids is investigated theoretically in a free diffusion model for relative motion of radicals. A very simple and accurate formula for relative APS amplitude is derived.
This formula predicts a very small APS amplitude for the radical pair 2(CH&CH at T= -45ยฐC. The amplitude is two orders of magnitude smaller than the experimental one, suggesting that the free-diffusion-model description of the relative motion of radicals is not correct.
๐ SIMILAR VOLUMES
Shortly after their formation, transient free radicals trapped in micelles exhibit electron spin resonance (ESR) spectra with "antiphase" lineshapes, i.e. lines with their low-field halves in emission and high-field halves in absorption. It is demonstrated that this hitherto unexplained effect is co
Hore and McLauchlan that shortly after their formation geminate isopropylketyl radicals in isopropanol at law temperature ( ~200 K) exhibit ESR spectra with "antiphase" lineshape, i.e. lines with their low-field halves in emission and high-field halves in absorption. It is shown that a theory which
The ESR lineshape of spin-correlated radical pairs (RP) diffusing in a small volume is calculated within the sudden perturbation approach for space dimensionalities D = 1, 2, 3. It is shown that in 2D and 3D models the RP spin dynamics are described by a Bioch-type equation quite accurately. A simpl