phase cycle exorcycle EXORCYCLE A phase cycle technique used in FT NMR experiments whereby the sense of application (or phase) of the rf pulses is altered on repeating the experiment to eliminate spectral artefacts. Exorcycle takes its name from the fact that it is used to remove 'phantom' and 'ghost' peaks. For the technique see J. Magn. Reson., (1977), 27, pg 511. https://orcid.org/0000-0001-5985-7429 2009-05-29T12:00:00Z CHMO:0001881