  Angle resolved photoemission spectroscopy (ARPES) has been performed on
quasi-one dimensional Li0.9Mo6O17 using photon energy 500 eV. Measured band
dispersions are in agreement with those from both low photon energy
measurements and band structure calculations. The momentum integrated ARPES
spectrum is well fit by the finite temperature Luttinger liquid (LL)spectral
function, with an anomalous exponent 0.6 that is the same within experimental
uncertainty as the value found with photon energy 30 eV. These identical
findings at both low and high photon energies are entirely consistent with
reasoning based on the crystal structure, that the quasi-one dimensional chains
lie two layers below the cleavage plane so that the observed spectroscopic LL
behavior of Li0.9Mo6O17 is a bulk property.
