Location of β-emitting12N in V crystal following recoil implantation

Nuclear dipolar broadening in the NMR spectra of β-emitting12N implanted in single crystal V was studied as a function of external magnetic field, orientation of the crystal axes relative to the field, and temperature of the sample. The implanted12N was located in an interstitial tetrahedral site. The surrounding V atoms nearest to the12N were displaced from the regular lattice position; the lattice expansion of large size Δa/a=0.5 was determined.