title: Spin evolution in a radio frequency field studied through muon spin resonance.
abstract: The application of composite inversion pulses to a novel area of magnetic resonance, namely muon spin resonance, is demonstrated. Results confirm that efficient spin inversion can readily be achieved using this technique, despite the challenging experimental setup required for beamline measurements and the short lifetime (≈2.2μs) associated with the positive muon probe. Intriguingly, because the muon spin polarisation is detected by positron emission, the muon magnetisation can be monitored during the radio-frequency (RF) pulse to provide a unique insight into the effect of the RF field on the spin polarisation. This technique is used to explore the application of RF inversion sequences under the non-ideal conditions typically encountered when setting up pulsed muon resonance experiments.
authors.affiliation: School of Chemistry, University of East Anglia, Norwich NR4 7JT, United Kingdom. n.clayden@uea.ac.uk
authors.forename: Nigel J
authors.initials: NJ
authors.lastname: Clayden
authors.forename: Stephen P
authors.initials: SP
authors.lastname: Cottrell
authors.forename: Iain
authors.initials: I
authors.lastname: McKenzie
mesh_terms: D003198:Computer Simulation; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D008651:Mesons; D008956:Models, Chemical; D008958:Models, Molecular; D011846:Radio Waves; D013113:Spin Labels
chemical_list: D013113:Spin Labels