Experimental and theoretical study of the angular resolved secondary electron spectroscopy (ARSES) for W(100) in the energy range 0 ⩽ E ⩽ 20 eV

The angular resolved energy distribution of true secondary electrons emitted normal to a clean W(100) surface has been measured with a 180° Spherical Deflector Analyzer. While significant discrepancies are found with earlier secondary emission data, good agreement exists with angular resolved photoemission spectra. Comparison to recent band structure calculations (density of states effects) is made. The fine structure of the secondary emission spectrum is fully explained by numerical results obtained by means of a quantitative theory of angular resolved secondary emission. Further, the fine structure corresponds closely to reflection coefficient data.