Abstract
Effects observed when nonthermal spin polarization is formed at a magnetic field that differs from the field of nuclear magnetic resonance detection are analyzed in detail. Particular attention is paid to the case of field variation faster than relaxation. At sufficiently low field when the scalar interaction among spins fulfills the condition of strong coupling, relaxation and polarization become collective properties of spin groups. As a result, the magnetic relaxation dispersion exhibits characteristic features and the polarization is transferred among spins. In regions of level-crossings these effects become particularly strong. The manipulation and possible utilization of such a polarization transfer in field-cycling experiments are discussed. The effects as demonstrated here by the example of hyperpolarized tryptophan are of a general nature and, therefore, not limited to special methods of dynamic polarization but are typical for field-cycling experiments.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
