We present experimental results for the alignment of N2O+(A (2) Sigma(+)) photoions over an extended energy range (16.4 less than or equal to h nu(exc)less than or equal to 240 eV). The polarization of the N2O+(A (2) Sigma(+)-->X (2) Pi) fluorescence is used to interpret the oscillator strength distributions for normally unresolved degenerate ionization channels. The results clearly show the influence of a near-threshold 7 sigma-->k sigma shape resonance, and help to clarify the results of previous fluorescence and photoelectron studies. At high photon energies, the photoelectrons are not favored to exit via a particular channel, in contrast to recent results on N-2 and CO, where photoelectrons are ejected preferentially via the k sigma channel and the photoions retain significant alignment even at the highest measurable energies. These results demonstrate that even well above threshold the spectral dependence of the alignment (i.e., polarization) is very sensitive to the molecular environment for photoejection. (C) 1997 American Institute of Physics.