Nuclear magnetic resonance gyromagnetic ratio

For chemically interesting nuclei, Table 11.10 lists values of the nuclear spin quantum number I, the nuclear gyromagnetic ratio gN/ the nuclear electric quadrupole moment Q, and the nuclear magnetic resonance frequency v (Hz, for H0 = 1 tesla). 

RF Pulse Pulse of radio-frequency (RF) energy transmitted by an RF coil in nuclear magnetic resonance computerized tomography. Its frequency coq is represented as 0)0 = y Ho, where y is the gyromagnetic ratio and Ho is the main magnetic field strength. Its shape and amplitude determine the selectivity in the frequency band and the amount of spin rotation. 

This equation describes the resonance condition for the NMR experiment and shows that the resonant radiofrequency must correspond to the Larmor frequency for the applied magnetic field. Because the gyromagnetic ratio is different for each nuclear isotope, different nuclei resonate at widely different frequencies in a given applied magnetic field. In a magnetic field of 1 T, H has a frequency of 42.5759 MHz, and a frequency of 10.705 MHz. 

---