Asymmetry of the Quadrupole Satellite Lines of ²³Na in NaNO₂

Abstract

The line shapes of the quadrupole-split lines of ²³Na in NaNO₂ have been measured at room temperature with the applied magnetic field along the a and c axes. Asymmetry of two observed satellite lines is compared with a calculation based on a two-spin Hamiltonian with the dipole coupling between adjacent ²³Na nuclei along the a direction. The result shows that the signs of components of the electric field gradient at the ²³Na site are positive for V_aa and V_cc, and negative for V_bb.