Analysis and reduction of thermal magnetic noise in liquid-He dewar for sensitive low-field nuclear magnetic resonance measurements
نویسندگان
چکیده
منابع مشابه
The Conformations of 1-Thiacyclooctan-3-One Dynamic Nuclear Magnetic Resonance and Force-Field Calculation
The 1H and natural-abundance 13C-NMR spectra of 1-thiacyclooctan-3-one (1) have been measured from 25 to -100°C. Coalescence is observed in the 1H-NMR spectra of (1) at about -80°C, and attributed to ring inversion in a boat-chair conformation, which is the predominant conformation of (1). The free energy of activation (DG¹</s...
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In current magnetic resonance imaging (“MRI”) systems, low-field MRI has the advantage of low cost and open. The signal-to-noise ratio (“SNR”) obtained, however, is relatively low. This study thus aims at developing a Bayesian multi-stage hierarchical model with an outlier-detection ability, through the use of a heavy-tailed prior that can be used to reduce the effects of noise introduced. Sinc...
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Techniques for studying molecular structure, such as x-ray diffraction and nuclear magnetic resonance (NMR), often require the use of single crystals' or oriented samples. ' NMR, for example, is sensitive to interatomic distances and angles through spectral splittings caused by internucl. ear dipol. e-dipole couplings in high magnetic field. Where only polycrystalline powders or amorphous mater...
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ژورنال
عنوان ژورنال: Progress in Superconductivity and Cryogenics
سال: 2013
ISSN: 1229-3008
DOI: 10.9714/psac.2013.15.2.020