Angle-resolved energy distributions for photoelectrons emitted from the Bi(
lll) single crystal face are presented at 16.85 eV photon energy. The varia
tion of peak-energy positions as a function of the electron emission angle
shows four main dispersing features located between the Fermi level and 5 e
V.The bulk electronic structure is found in qualitative agreement with the
pseudopotential calculation performed by Golin along the TMU and TQW symmet
ry lines of the Brillouin zone. The experimental features located at <(Gamm
a)over bar>; around 0.3 and 3 eV below the Fermi level are sampled in the t
wo-dimensional Brillouin zone along the <(Gamma)over bar>(M) over bar<(Gamm
a)over bar> and <(Gamma)over bar>(K) over bar (X) over bar symmetry directi
ons (dispersion about 1 eV) and are assigned to electronic surface states.