title: Double resonance probes for close frequencies.
abstract: A new double resonance probe design for NMR experiments for systems with close resonance frequencies is introduced. The design is based on two coupled resonators and was extensively tested on magnetically aligned powders of several high temperature superconductors by performing double resonance experiments between the 65Cu and 63Cu isotopes as well as between transitions of different magnetic quantum number of the same spin. The probe's performance approaches that of a single resonance circuit and it has only 4 variable tuning/matching elements.
authors.affiliation: Department of Physics and Materials Research Laboratory, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois, 61801-3080, USA.
authors.forename: J
authors.initials: J
authors.lastname: Haase
authors.forename: N J
authors.initials: NJ
authors.lastname: Curro
authors.forename: C P
authors.initials: CP
authors.lastname: Slichter
mesh_terms: D009682:Magnetic Resonance Spectroscopy