Отправить статью по E-mail Theoretical Treatment of Pulsed DNP Experiments: Effects of Spectral Exchange
- Авторы: Nasibulov E.1,2,3, Ivanov K.1,2, Sagdeev R.1,2,4
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Учреждения:
- International Tomography Center, Siberian Branch of the Russian Academy of Science
- Novosibirsk State University
- A.P. Ershov Institute of Informatics Systems, Siberian Branch of the Russian Academy of Science
- Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Science
- Выпуск: Том 50, № 10 (2019)
- Страницы: 1233-1240
- Раздел: Original Paper
- URL: https://journals.rcsi.science/0937-9347/article/view/248672
- DOI: https://doi.org/10.1007/s00723-019-01144-6
- ID: 248672
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Аннотация
In the present work, we provide a theoretical treatment of pulsed Overhauser-type dynamic nuclear polarization (DNP) in the presence of spectral exchange, namely, Heisenberg exchange. The expression for the DNP enhancement of a nuclear magnetic resonance (NMR) signal is generalized by redefining the “deviation factor”, expressing the deviation of the electron spin polarization from its equilibrium value, averaged over the period of the pulse sequence. We can demonstrate that spectral exchange significantly increases the deviation factor and, thus, the NMR enhancement. The present treatment allows one to determine the optimal pumping frequency at different exchange rates.
Об авторах
Egor Nasibulov
International Tomography Center, Siberian Branch of the Russian Academy of Science; Novosibirsk State University; A.P. Ershov Institute of Informatics Systems, Siberian Branch of the Russian Academy of Science
Автор, ответственный за переписку.
Email: nasibulov@tomo.nsc.ru
ORCID iD: 0000-0001-6895-7915
Россия, Novosibirsk, 630090; Novosibirsk, 630090; Novosibirsk, 630090
Konstantin Ivanov
International Tomography Center, Siberian Branch of the Russian Academy of Science; Novosibirsk State University
Email: nasibulov@tomo.nsc.ru
Россия, Novosibirsk, 630090; Novosibirsk, 630090
Renad Sagdeev
International Tomography Center, Siberian Branch of the Russian Academy of Science; Novosibirsk State University; Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Science
Email: nasibulov@tomo.nsc.ru
Россия, Novosibirsk, 630090; Novosibirsk, 630090; Moscow, 119991
