We have developed a new method for thermal desorption spectroscopy using field electron emission microscopy. To investigate the validity of our method, we have performed hydrogen adsorption experiments on the well known W(100) and W(110) surfaces and also on W(310). The thermal desorption spectra of these systems show that this method permits the study of adsorption on various single crystal plans of a metal with one sample. This method also gives information about the dipole direction of the adsorbates directly from the thermal desorption spectrum without additional measurement of the work function change induced by adsorbates.
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© 1996 American Institute of Physics.
1996
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