F.J. Himpsel, P. Heimann, et al.
Journal of Applied Physics
An ultrahigh vacuum photoelectron spectrometer capable of measuring electron energy distributions for solids and chemisorbed gases at photon energies of 16.8, 21.2, 26.9, and 40.8 eV is described. © 1971 The American Institute of Physics.
F.J. Himpsel, P. Heimann, et al.
Journal of Applied Physics
T.H. DiStefano, D.E. Eastman
Solid State Communications
F.J. Himpsel, D.E. Eastman, et al.
Physical Review Letters
J.F. van der Veen, F.J. Himpsel, et al.
Solid State Communications