Dynamic nuclear polarisation by thermal mixing: quantum theory and macroscopic simulations. Issue 43 (24th October 2016)

• Record Type: Journal Article
• Authors: Karabanov, Alexander; Kwiatkowski, Grzegorz; Perotto, Carlo U.; Wiśniewski, Daniel; McMaster, Jonathan; Lesanovsky, Igor; Köckenberger, Walter
• Is Part Of: Physical chemistry chemical physics. Volume 18:Issue 43(2016)
• Page Start: 30093
• Page End: 30104
• Publication Date: 2016-10-24
• Subjects: Chemistry, Physical and theoretical -- Periodicals; 541.3
• DOI: 10.1039/c6cp04345c
• Languages: English
• ISSNs: 1463-9076

Abstract

Abstract : A quantum theory of thermal mixing dynamic nuclear polarisation in solids is developed displaying a good agreement with experiments. Abstract : A theory of dynamic nuclear polarisation (DNP) by thermal mixing is suggested based on purely quantum considerations. A minimal 6-level microscopic model is developed to test the theory and link it to the well-known thermodynamic model. Optimal conditions for the nuclear polarization enhancement and effects of inhomogeneous broadening of the electron resonance are discussed. Macroscopic simulations of nuclear polarization spectra displaying good agreement with experiments, involving BDPA and trityl free radicals, are presented.