Electron spin echo envelope modulation (ESEEM) is observed in a coal sample utilizing a two-pulse sequence originally proposed by Hartmann and Hahn to generate a 'spin-locked echo'. It is experimentally shown that this spin-locked ESEEM (SLESEEM) is similar to three-pulse ESEEM rather than conventio
A Novel 2D Spin-Locked Electron Spin-Echo-Envelope-Modulation (SESEEM) Spectroscopy
β Scribed by Y.C. Zhong; J.R. Pilbrow
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 186 KB
- Volume
- 110
- Category
- Article
- ISSN
- 1064-1858
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It is demonstrated that the spin-locked electron spin echo envelope modulation (ESEEM) experiment recently introduced by Zhong and Pilbrow [Chem. Phys. Letters 222 (1994) 5921 does not yield the same information as the conventional three-pulse ESEEM experiment because of the hyperfine decoupling inh
A pulsed EPR technique for generating electron-spin-echo-envelope modulations in paramagnetic systems that do not contain nonsecular hyperiine interactions is proposed. Strong continuous radio-frequency irradiation tuned to one of the unperturbed nuclear transition frequencies is shown to provide a