title: Earth field NMR with chemical shift spectral resolution: theory and proof of concept.
abstract: A new method for obtaining an NMR signal in the Earth's magnetic field (EF) is presented. The method makes use of a simple pulse sequence with only DC fields which is much less demanding than previous approaches in terms of the pulses' rise and fall times. Furthermore, it offers the possibility of obtaining NMR data with enough spectral resolution to allow retrieving high resolution molecular chemical shift (CS) information - a capability that was not considered possible in EF NMR until now. Details of the pulse sequence, the experimental system, and our specially tailored EF NMR probe are provided. The experimental results demonstrate the capability to differentiate between three types of samples made of common fluorine compounds, based on their CS data.
authors.affiliation: Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 32000, Israel.
authors.forename: Itai
authors.initials: I
authors.lastname: Katz
authors.forename: Lazar
authors.initials: L
authors.lastname: Shtirberg
authors.forename: Gubrail
authors.initials: G
authors.lastname: Shakour
authors.forename: Aharon
authors.initials: A
authors.lastname: Blank
mesh_terms: D003198:Computer Simulation; D018534:Earth, Planet; D060526:Magnetic Fields; D009682:Magnetic Resonance Spectroscopy / Q000295:instrumentation* / Q000379:methods*; D008956:Models, Chemical; D010865:Pilot Projects