The metastable Be anion has been experimentally investigated using a crossed laser–negative-ion-beam apparatus. The Be(2 3 P ) electron affinity of 261±10 meV has been determined by photodetached-electron spectroscopy. It is also demonstrated that the Be(2 3 P ) excitation energy of 2.723±0.007 eV can be determined by means of a hybrid technique involving the use of both autodetached- and photodetached-electron spectroscopies.
關聯:
Physical Review A (Atomic, Molecular, and Optical Physics) 48(3), pp.1983-1986
