Download - NQR disadvantages - Department of Physicsmajewski/excerpt.pdf · NQR disadvantages • Only works for quadrupolar nuclei (spin ≥ 1) • SNR usually not as high as NMR • No ability

Transcript

NQRdisadvantages

•  Onlyworksforquadrupolarnuclei(spin≥1)•  SNRusuallynotashighasNMR•  NoabilitytocontroloperaRngfrequency–  NMR:frequencydeterminedbyB0andγ–  NQR:frequencydeterminedbynaturalcrystalelectricfieldgradientonly•  Ifyoudon’talreadyknowtheNQRfrequency,goodluckfindingit•  ThereisnoNQRoraverylowfrequencyifthereishighcrystalsymmetry

•  Frequencymightbesolow,you’llneverdetectitevenifyoutried

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