Multiplets at zero magnetic field: the geometry of zero-field NMR.

@article{Butler2013MultipletsAZ,
  title={Multiplets at zero magnetic field: the geometry of zero-field NMR.},
  author={M. Butler and Micah P. Ledbetter and Thomas Theis and John W. Blanchard and Dmitry Budker and Alexander Pines},
  journal={The Journal of chemical physics},
  year={2013},
  volume={138 18},
  pages={
          184202
        }
}
For liquid samples at Earth's field or below, nuclear-spin motion within scalar-coupled networks yields multiplets as a spectroscopic signature. In weak fields, the structure of the multiplets depends on the magnitude of the Zeeman interaction relative to the scalar couplings; in Earth's field, for example, heteronuclear couplings are truncated by fast precession at distinct Larmor frequencies. At zero field, weak scalar couplings are truncated by the relatively fast evolution associated with… Expand
Parahydrogen-induced polarization at zero magnetic field.
TLDR
The conversion of the singlet state of parahydrogen into an oscillating sample magnetization at zero magnetic field is described and the vector order present at the end of the pulse evolves into detectable magnetization. Expand
Scalar relaxation of NMR transitions at ultralow magnetic field.
TLDR
The experimental data show that couplings to nuclei with small, nonzero quadrupole moments (2H) give rise to higher transverse relaxation rates at ultralow field than rapidly relaxing quadrupolar nuclei (Cl and Br), and demonstrates that certain nuclei in the spin system may be "weakly coupled" or even decoupled when the applied magnetic field is zero. Expand
Zero-Field J-spectroscopy of Quadrupolar Nuclei
Zero- to ultralow-field (ZULF) nuclear magnetic resonance (NMR) is a version of NMR that allows studying molecules and their transformations in the regime dominated by intrinsic spin-spinExpand
Zero- to Ultralow-Field NMR
This article presents the basic principles and methodology used in modern implementations of zero- to ultralow-field NMR (ZULF NMR), with emphasis on the case where spin evolution is detectedExpand
A method for measurement of spin-spin couplings with sub-mHz precision using zero- to ultralow-field nuclear magnetic resonance.
TLDR
The availability of fast, flexible fitting method for ZULF NMR enables a new generation of precision-measurement experiments for spin-dependent interactions and physics beyond the Standard Model. Expand
Robust transformation of singlet order into heteronuclear magnetisation over an extended coupling range.
TLDR
A new radio-frequency scheme for the transformation of the singlet order of a chemically-equivalent homonuclear spin pair into the magnetisation of a heteronuclear coupling partner is presented, which is a substantial improvement to the validity range of existing sequences. Expand
Nuclear Magnetic Resonance with Spin Singlet States and Nitrogen Vacancy Centers in Diamond
Nuclear magnetic resonance (NMR) spectroscopy and magnetic resonance imaging (MRI) are techniques widely utilized by many scientific fields, but their applications are often limited by short spinExpand
The role of level anti-crossings in nuclear spin hyperpolarization.
TLDR
Here, an analysis of polarization transfer in terms of LACs in the rotating frame is very useful to predict which spin orders are transferred depending on the strength and frequency of the B1 field. Expand
Chemical analysis using J-coupling multiplets in zero-field NMR
Abstract Zero-field nuclear magnetic resonance (NMR) spectroscopy is emerging as a new, potentially portable, and cost-effective NMR modality with the ability to provide information-rich,Expand
Zero- to ultralow-field nuclear magnetic resonance J-spectroscopy with commercial atomic magnetometers.
TLDR
A simple ZULF NMR configuration employing commercial magnetometers is described, and sufficient functionality to measure samples with nuclear spins prepolarized in a permanent magnet or initialized using parahydrogen is demonstrated. Expand
...
1
2
...

References

SHOWING 1-10 OF 92 REFERENCES
Parahydrogen-induced polarization at zero magnetic field.
TLDR
The conversion of the singlet state of parahydrogen into an oscillating sample magnetization at zero magnetic field is described and the vector order present at the end of the pulse evolves into detectable magnetization. Expand
Near-zero-field nuclear magnetic resonance.
TLDR
It is shown that the presence of very small magnetic fields results in splitting of the zero-field NMR lines, imparting considerable additional information to the pure zero- field spectra. Expand
Zero field NMR and NQR
Methods are described and demonstrated for detecting the coherent evolution of nuclear spin observables in zero magnetic field with the full sensitivity of high field NMR. The principle motivation isExpand
J-coupling nuclear magnetic resonance spectroscopy of liquids in nT fields.
TLDR
Low-field NMR may open new applications, such as monitoring heteronuclear reactions, low-field imaging, simultaneous NMR/magnetoencephalography measurements, or quantum computing. Expand
Quantitative analysis of Earth's field NMR spectra of strongly-coupled heteronuclear systems.
TLDR
In the Earth's magnetic field, it is possible to observe spin systems consisting of unlike spins that exhibit strongly coupled second-order NMR spectra that are independent of the sign of (1)J((14)N,(1)H). Expand
Liquid-State NMR and Scalar Couplings in Microtesla Magnetic Fields
TLDR
In the absence of chemical shifts, proton-phosphorous scalar (J) couplings have been detected, indicating the presence of specific covalent bonds, opening the possibility for “pure J spectroscopy” as a diagnostic tool for the detection of molecules in low magnetic fields. Expand
Paths from weak to strong coupling in NMR
J-coupled nuclear magnetic resonance (NMR) spectroscopy in the strong coupling regime at low magnetic field (10{sup -7} T 10{sup -3} T) and at ultralow field (B<10{sup -7} T). We show that severalExpand
Chemical analysis by ultrahigh-resolution nuclear magnetic resonance in the Earth’s magnetic field
High-resolution NMR spectroscopy is a powerful tool for non-destructive structural investigations of matter1. Typically, expensive and immobile superconducting magnets are required for chemicalExpand
Optical detection of NMR J-spectra at zero magnetic field.
TLDR
The technique described here will provide a new modality for high-precision "J spectroscopy" using small samples on microchip devices for multiplexed screening, assaying, and sample identification in chemistry and biomedicine. Expand
Chemical analysis using J-coupling multiplets in zero-field NMR
Abstract Zero-field nuclear magnetic resonance (NMR) spectroscopy is emerging as a new, potentially portable, and cost-effective NMR modality with the ability to provide information-rich,Expand
...
1
2
3
4
5
...