37 a hydrogen beam is prepared in the state wf.t)-3 esp ) 2 where ei and ez are the energies of the ground state and the first excited state of the hydrogen ato

37 A hydrogen beam is prepared in the state wF.t)-3 esp ) 2 where Ei and Ez are the energies of the ground state and the first excited state of the hydrogen atom and w,F) and v,(F) are their wave functions respectively. The beam is incident on a detector which measures their energy. Let Eo be the ionization energy of the hydrogen atom. The average energy measured by the detector is given by