nuclear magnetic resonance pulse sequence heteronuclear Hartmann Hahn pulse sequence HEHAHA HEHAHA sequence CHMO:0001863 2009-05-29T12:00:00Z heteronuclear Hartman-Hahn sequence https://orcid.org/0000-0001-5985-7429 An NMR pulse sequence used to transfer magnetisation between protons and covalently bound (spin active) heteronuclei via isotropic mixing of their magnetisation. Used to e.g. enhance the NMR signal of heteronuclei or to correlate chemical shifts of protons with heteronuclei. For the pulse sequence see J. Magn. Reson., (1991), 91, pg 444. HEHAHA pulse sequence heteronuclear Hartman-Hahn pulse sequence heteronuclear Hartmann Hahn