6533b870fe1ef96bd12cfdec

RESEARCH PRODUCT

A method for measurement of spin-spin couplings with sub-mHz precision using zero- to ultralow-field nuclear magnetic resonance.

Dmitry BudkerAlexander WilzewskiJohn W. BlanchardS. Afach

subject

Chemical Physics (physics.chem-ph)Nuclear and High Energy PhysicsZero field NMRField (physics)ChemistryBiophysicsFOS: Physical sciences010402 general chemistryCondensed Matter Physics01 natural sciences7. Clean energyBiochemistrySpectral line0104 chemical sciences3. Good healthNMR spectra databaseMatrix (mathematics)Nuclear magnetic resonancePhysics - Chemical Physics0103 physical sciencesTransverse relaxation-optimized spectroscopy010306 general physicsSpin (physics)Two-dimensional nuclear magnetic resonance spectroscopy

description

We present a method which allows for the extraction of physical quantities directly from zero- to ultralow-field nuclear magnetic resonance (ZULF NMR) data. A numerical density matrix evolution is used to simulate ZULF NMR spectra of several molecules in order to fit experimental data. The method is utilized to determine the indirect spin-spin couplings ($J$-couplings) in these, which is achieved with precision of $10^{-2}$--$10^{-4}$ Hz. The simulated and measured spectra are compared to earlier research. Agreement and precision improvement for most of the $J$-coupling estimates are achieved. The availability of an efficient, flexible fitting method for ZULF NMR enables a new generation of precision-measurement experiments for spin-dependent interactions and physics beyond the Standard Model.

yearjournalcountryeditionlanguage
2017-04-11Journal of magnetic resonance (San Diego, Calif. : 1997)
10.1016/j.jmr.2017.08.016https://pubmed.ncbi.nlm.nih.gov/28961479