NQR disadvantages - Department of Physicsmajewski/excerpt.pdf · NQR disadvantages • Only works...
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NQR disadvantages • Only works for quadrupolar nuclei (spin ≥ 1) • SNR usually not as high as NMR • No ability to control operaRng frequency – NMR: frequency determined by B 0 and γ – NQR: frequency determined by natural crystal electric field gradient only • If you don’t already know the NQR frequency, good luck finding it • There is no NQR or a very low frequency if there is high crystal symmetry • Frequency might be so low, you’ll never detect it even if you tried
Transcript of NQR disadvantages - Department of Physicsmajewski/excerpt.pdf · NQR disadvantages • Only works...
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NQRdisadvantages
• Onlyworksforquadrupolarnuclei(spin≥1)• SNRusuallynotashighasNMR• NoabilitytocontroloperaRngfrequency– NMR:frequencydeterminedbyB0andγ– NQR:frequencydeterminedbynaturalcrystalelectricfieldgradientonly• Ifyoudon’talreadyknowtheNQRfrequency,goodluckfindingit• ThereisnoNQRoraverylowfrequencyifthereishighcrystalsymmetry
• Frequencymightbesolow,you’llneverdetectitevenifyoutried
