Thermally-Activated Clustering of Xe Atoms Increases 129Xe T1 in Solid-State DNP Mixtures

Keywords

abundance achievable achieve activated aluminum amplifier annealing appeared appears applications astronomy atom atoms band bath breaking broad broadening built chemical circles clinical cluster clustering clusters coil combination comment computed consistent constants contained cool cooled copper coupled dashed delay despite diameter diffusion directly dissolved double effective either electrons excited exponential extreme fits fitted forced formation frequency frozen glass ground hand hermetically holder home homogeneous hours human imperfectly individual inside instead integrals integrated irradiated lattice liquid long made magnet many matrix mechanical microwave microwaves minutes mixture molecules much multiplier narrow nearly nitrogen nuclear numerically optical oxford peak phys physics polarization preparation prepared pressure probe process prolongs pump pumping pure radical recent reduced represent retractable saddle sample samples several shapes significantly solid solubility source spectra spectrum spin spontaneous squares steel stirrer stirring storage store strongly superconducting system tail temperature thermal thermally towards transferred transportation tube ultimate unpaired variable vigorous volume waveguide width world xenon