Based on the formalism developed previously [Phys. Rev. B 48, 9126 (19
93)], magnetophonon resonances and electrophonon resonances in quantum
wires are investigated for various confinement potentials. The occupa
tion of several electric subbands due to these confinement potentials
leads to electrophonon resonances and a splitting and shift of magneto
phonon resonance peak positions. The dependence of both resonance peak
positions on the magnetic field, the thickness of the well, the confi
nement frequency, and the bias field is shown explicitly.