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Solid effect DNP polarization dynamics in a system of many spins

Wiśniewski, Daniel; Karabanov, Alexander; Lesanovsky, Igor; Köckenberger, Walter

Authors

Daniel Wiśniewski

Alexander Karabanov



Abstract

We discuss the polarization dynamics during solid effect dynamic nuclear polarization (DNP) in a central spin model that consists of an electron surrounded by many nuclei. To this end we use a recently developed formalism and validate first its performance by comparing its predictions to results obtained by solving the Liouville von Neumann master equation. The use of a Monte Carlo method in our formalism makes it possible to significantly increase the number of spins considered in the model system. We then analyse the dependence of the nuclear bulk polarization on the presence of nuclei in the vicinity of the electron and demonstrate that increasing the minimal distance between nuclei and electrons leads to a rise of the nuclear bulk polarization. These observations have implications for the design of radicals that can lead to improved values of nuclear spin polarization. Furthermore, we discuss the potential to extend our formalism to more complex spin systems such as cross effect DNP.

Citation

Wiśniewski, D., Karabanov, A., Lesanovsky, I., & Köckenberger, W. (2016). Solid effect DNP polarization dynamics in a system of many spins. Journal of Magnetic Resonance, 264, 30-38. https://doi.org/10.1016/j.jmr.2016.01.016

Journal Article Type Article
Acceptance Date Jan 10, 2016
Online Publication Date Feb 23, 2016
Publication Date 2016-03
Deposit Date Jul 15, 2016
Publicly Available Date Jul 15, 2016
Journal Journal of Magnetic Resonance
Print ISSN 1090-7807
Electronic ISSN 1090-7807
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 264
Pages 30-38
DOI https://doi.org/10.1016/j.jmr.2016.01.016
Keywords Dynamic nuclear polarization; Solid effect DNP; Many spins simulation; Lindblad formalism
Public URL http://eprints.nottingham.ac.uk/id/eprint/35058
Publisher URL http://www.sciencedirect.com/science/article/pii/S1090780716000574
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0





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