Longitudinal nuclear spin relaxation of ortho- and para-hydrogen dissolved in organic solvents.

@article{Aroulanda2007LongitudinalNS,
  title={Longitudinal nuclear spin relaxation of ortho- and para-hydrogen dissolved in organic solvents.},
  author={Christie Aroulanda and Larisa Starovoytov{\'a} and Daniel Canet},
  journal={The journal of physical chemistry. A},
  year={2007},
  volume={111 42},
  pages={10615-24}
}
The longitudinal relaxation time of ortho-hydrogen (the spin isomer directly observable by NMR) has been measured in various organic solvents as a function of temperature. Experimental data are perfectly interpreted by postulating two mechanisms, namely intramolecular dipolar interaction and spin-rotation, with activation energies specific to these two mechanisms and to the solvent in which hydrogen is dissolved. This permits a clear separation of the two contributions at any temperature… CONTINUE READING