The molecular Zeeman and hyperfine spectra of LiH and LiD by molecular beam high resolution electric resonance

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Abstract
The molecular Zeeman spectra of LiH and LiD in the 1Σ ground electronic state have been measured in the first rotational state (J=1) and zeroth vibrational state (v=0) by molecular beam electronic resonance. By fitting the observed resonance lines of several different magnetic fields to an appropriate Hamiltonian, values for the rotational g factor (gJ), the anisotropies of the nuclear shieldings (σTH,σTLi), and the anisotropy of the molecular magnetic susceptibility (ξT) were measured. The results are In order to fit the observed magnetic field spectra, accurate values of the hyperfine constants were required. The hyperfine spectra of several (J, v) states of LiH and LiD were measured. The results are Numbers in parentheses are the uncertainties in the final figures.