AI Article Synopsis
- High resolution NMR spectroscopy was utilized to accurately measure the nuclear magnetic dipole moment of (83)Kr, using new data on nuclear magnetic shielding in krypton and helium-3.
- Small amounts of (3)He were mixed with (83)Kr as a buffer gas, and NMR spectra showed that resonance frequencies of both gases depended linearly on the density of the helium solvent.
- By analyzing data from zero density of krypton and using the updated chemical shielding value, researchers achieved a highly precise determination of (83)Kr's nuclear magnetic moment, μ((83)Kr) = -0.9707297(32)μN.
Article Abstract
High resolution NMR spectroscopy was applied to precisely determine the (83)Kr nuclear magnetic dipole moment on the basis of new results available for nuclear magnetic shielding in krypton and helium-3 atoms. Small amounts of (3)He as the solutes and (83)Kr as the buffer gas were observed in (3)He and (83)Kr NMR spectra at the constant external field, B0 = 11.7578 T. In each case, the resonance frequencies (ν(He) and ν(Kr)) were linearly dependent on the density of gaseous solvent. The extrapolation of experimental points to the zero density of gaseous krypton allowed for the evaluation of both resonance frequencies free from intermolecular interactions. By combining these measurements with the recommended (83)Kr chemical shielding value, the nuclear magnetic moment could be determined with much better precision than ever before, μ((83)Kr) = -0.9707297(32)μN, with the improvement due to the greater accuracy of the spectral data.
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| http://dx.doi.org/10.1002/mrc.4083 | DOI Listing |
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