C. Desfrancois et al., FROM 1 R TO 1/R(2) POTENTIALS - ELECTRON-EXCHANGE BETWEEN RYDBERG ATOMS AND POLAR-MOLECULES/, Physical review letters, 73(18), 1994, pp. 2436-2439
Several new molecular anions, in their dipole-bound ground states, hav
e been created by charge exchange between polar molecules and laser-ex
cited Rydberg atoms. Measurement of electron-binding energies, by mean
s of electric field detachment, as function of known molecular dipole
moments gives the first experimental estimation of the minimum molecul
ar dipole required to bind an electron.