Abstract
Transitions between the J = 0 and J = 1 rotational levels of Na23F19 have been measured by the molecular beam electric resonance method in the three lowest vibrational states. The following rotational constants have been determined (all frequencies in Mc/sec): The Na quadrupole interaction constants in the J = 1 level are: The spin-rotation interaction constant for Na in the J = 1 level for ν = 0, 1, and 2 is The equilibrium internuclear distance computed directly from Be is The electric dipole moment is: