In situ High‐Field Dynamic Nuclear Polarization—Direct and Indirect Polarization of ¹³C nuclei

Abstract

In situ High-Field Dynamic Nuclear Polarization: Direct and indirect polarization of 13C nuclei by DNP is investigated (see graphic). The field-dependent enhancement profile for both processes are investigated and the bulk polarization build-up time constants τBC and τBH for direct and indirect 13C polarization are compared.