Accuracy of NQR Measurements

Before discussing NQR results, first we must realise that the experimental accuracy is very high. The transition frequencies may be determined to 5 kHz provided the line width is 5-15 kHz. In most NQR spectra the line width is below 15 kHz. The NQR frequencies range between a few kHz and 1000 MHz Below 1 MHz the experimental measurement of NQR frequencies by pure quadrupole resonance is not successful. Therefore the main frequency range in NQR spectroscopy is 1 MHz v 1000 MHz and the accuracy is 

for determination of r , the error is mostly below 2 %. A theoretical cal-qQ 

J=l(73Ge, 83Kr, 93Nb, n3In, llsIn,209Bi) 

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