Upload
others
View
13
Download
0
Embed Size (px)
Citation preview
NQRdisadvantages
• Onlyworksforquadrupolarnuclei(spin≥1)• SNRusuallynotashighasNMR• NoabilitytocontroloperaRngfrequency– NMR:frequencydeterminedbyB0andγ– NQR:frequencydeterminedbynaturalcrystalelectricfieldgradientonly• Ifyoudon’talreadyknowtheNQRfrequency,goodluckfindingit• ThereisnoNQRoraverylowfrequencyifthereishighcrystalsymmetry
• Frequencymightbesolow,you’llneverdetectitevenifyoutried