Results 1 to 10 of about 57,735 (231)

Preparing Nuclear Spin Singlet State in a Three-spin System and Its Application in 2D Spectrum

open access: closedChinese Journal of Magnetic Resonance, 2022
Nuclear spin singlet state is a special spin state, whose main characteristic is that its lift-time can be much longer than the corresponding longitudinal/transverse relaxation time.
Kai-rui HU   +5 more
doaj   +3 more sources

Preparation Efficiency of Nuclear Spin Singlet State: A Comparison Among Three Pulse Sequences

open access: closedChinese Journal of Magnetic Resonance, 2021
The preparation and detection of the nuclear singlet state are valuable and prospective for many applications related with compound molecular analysis.
Yi LI   +4 more
doaj   +3 more sources

Cu nuclear spin-spin coupling in the dimer singlet state in SrCu2(BO3)2 [PDF]

open access: greenJournal of Physics: Condensed Matter, 2002
We report results of nuclear magnetic resonance (NMR) experiments in SrCu2(BO3)2, a quasi two-dimensional spin system with a singlet ground state. When magnetic field is applied along the c-axis, each of the quadrupole split Cu resonance lines splits further into four lines.
Koichi Kodama   +5 more
openalex   +4 more sources

SINGLET-GROUND-STATE MAGNETS COUPLED WITH NUCLEAR SPINS. SYSTEMS WITH SINGLET-DOUBLET AND SINGLET-TRIPLET IONS [PDF]

open access: greenLe Journal de Physique Colloques, 1988
Magnetic properties are studied of a system having two types of electronic singlet-ground-state ions, d-ion (singlet-doublet) and t-ion (singlet-triplet), by taking account of the hyperfine coupling. It is shown that the exchange interaction between the d-ion and the t-ion electronic spins affects crucially the magnetic properties.
N. Suzuki, Yoshimitsu Fukuyama
openalex   +3 more sources

Steady-state preparation of long-lived nuclear spin singlet pairs at room temperature [PDF]

open access: greenPhysical Review B, 2017
The coherent high-fidelity generation of nuclear spins in long-lived singlet states which may find application as quantum memory or sensor represents a considerable experimental challenge. Here we propose a dissipative scheme that achieves the preparation of pairs of nuclear spins in long-lived singlet states by a protocol that combines the interaction
Q. Chen, Ilai Schwarz, Martin B. Plenio
openalex   +7 more sources

Preparation and Lifetime Studies of the Singlet State of Five Spins in Hexene Molecules Used to Guide the Preservation of the Parahydrogen-induced Nuclear Polarization State

open access: yesChinese Journal of Magnetic Resonance, 2023
Parahydrogen-induced polarization (PHIP) technique can greatly enhance the sensitivity of nuclear magnetic resonance (NMR) signals, and has been applied in the fields of magnetic resonance imaging, in situ chemical reaction monitoring, etc.
CI Jie   +4 more
doaj   +2 more sources

Preparation of Nuclear Spin Singlet States and Analysis of Influencing Factors on Their Conversion Efficiency and Lifetime

open access: yesChinese Journal of Magnetic Resonance, 2020
The long-life nuclear spin singlet states (LLSs) have broad application prospects due to the unique nature of their long lifetime. Herein, in a solution of alanylglycylgcine (AGG), the nuclear spin singlet state of a two-spin system far from the chiral ...
LIU Hui-xia   +3 more
doaj   +2 more sources

Preparation of Long-Lived Nuclear Singlet States in Three-Spin Systems

open access: yesChinese Journal of Magnetic Resonance, 2018
Long-lived nuclear singlet states are widely used in NMR because they have longer lifetime (TS) than conventional longitudinal relaxation time (T1).
GUO Hai-qing   +4 more
doaj   +2 more sources

NMR of 31P nuclear spin singlet states in organic diphosphates [PDF]

open access: yesJournal of Magnetic Resonance, 2021
$^{31}$P NMR and MRI are commonly used to study organophosphates that are central to cellular energy metabolism. In some molecules of interest, such as adenosine diphosphate (ADP) and nicotinamide adenine dinucleotide (NAD), pairs of coupled $^{31}$P nuclei in the diphosphate moiety should enable the creation of nuclear spin singlet states, which may ...
Stephen J. DeVience   +2 more
openaire   +4 more sources

Visualization of dynamics in coupled multi-spin systems [PDF]

open access: yesMagnetic Resonance, 2022
Since the dawn of quantum mechanics, ways to visualize spins and their interactions have attracted the attention of researchers and philosophers of science.
J. Xu   +9 more
doaj   +1 more source

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