Determination of the quadrupole coupling from featureless line shapes

✍ Scribed by M. A. Hepp; P. P. Man; A. Trokiner; J. Fraissard

• Publisher: John Wiley and Sons
• Year: 1994
• Tongue: English
• Weight: 532 KB
• Volume: 32
• Category: Article
• ISSN: 0749-1581
• DOI: 10.1002/mrc.1260320106

✦ Synopsis

Abstract

NMR nutation and quadrupole echo experiments were used to determine the quadrupole frequency (ω~Q~) of ^87^Rb (I = 3/2) in a single crystal of RbCaF~3~. Since RbCaF~3~ has a cubic unit cell above 195 K, there is no second‐order quadrupole shift and the spectrum is rather featureless. By fitting the response of ^87^Rb, as a function of pulse duration, to the predicted response we were able to determine that the average ω~Q~/2π = 4.5 kHz in this sample. Discrepancies in the agreement between the theory and the experiment for the echo response were attributed to differential relaxation of the central and satellite transitions.