Carr-Purcell-Meiboom-Gill pulse sequence quadrupolar Carr-Purcell-Meiboom-Gill pulse sequence QCPMG QCPMG pulse sequence CHMO:0000719 quadrupolar Carr-Purcell Meiboom-Gill pulse sequence quadrupolar Carr, Purcell,Meiboom, Gill pulse sequence QCPMG NMR QCPMG sequence A pulse sequence which is applied during nuclear magnetic resonance spectroscopy of quadrupolar nuclei, to measure spin–spin (T2) relaxation times. In the solid state, the sequence is used to achieve sensitivity enhancement for nuclei with low gyromagnetic ratios. For the pulse sequence see J. Phys. Chem. A, (1997), 101, pg 8597.