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Theoretical Treatment of Pulsed DNP Experiments : Effects of Spectral Exchange. / Nasibulov, Egor A.; Ivanov, Konstantin L.; Sagdeev, Renad Z.
в: Applied Magnetic Resonance, Том 50, № 10, 01.10.2019, стр. 1233-1240.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Theoretical Treatment of Pulsed DNP Experiments
T2 - Effects of Spectral Exchange
AU - Nasibulov, Egor A.
AU - Ivanov, Konstantin L.
AU - Sagdeev, Renad Z.
N1 - Publisher Copyright: © 2019, Springer-Verlag GmbH Austria, part of Springer Nature. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2019/10/1
Y1 - 2019/10/1
N2 - 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.
AB - 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.
KW - DYNAMIC NUCLEAR-POLARIZATION
UR - http://www.scopus.com/inward/record.url?scp=85069688631&partnerID=8YFLogxK
U2 - 10.1007/s00723-019-01144-6
DO - 10.1007/s00723-019-01144-6
M3 - Article
AN - SCOPUS:85069688631
VL - 50
SP - 1233
EP - 1240
JO - Applied Magnetic Resonance
JF - Applied Magnetic Resonance
SN - 0937-9347
IS - 10
ER -
ID: 21044972