{'fraction_non_alphanumeric': 0.021454112038140644, 'fraction_numerical': 0.014302741358760428, 'mean_word_length': 5.222222222222222, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Photoemission from Ordered Physisorbed Molecular Phases N2/Graphite, N2 and CO/Ag(111)

Using angle resolved ultraviolet photoelectron spectroscopy (ARUPS) the two dimensional energy dispersions of ordered physisorbed monolayers of N2 and CO/Ag(111) has been measured. For N2/graphite the ordered herringbone structure can be identified by correlating the ARUPS data to recent LEED studies. For all systems investigated we observe a k dependent splitting of the 5 σ (3 σg) level which is a consequence of the intermolecular interaction of two molecules in the unit cell. The splitting is largest in the center of the Brillouin zone of the overlayer and disappears towards its zone boundary. The observed dispersion can be understood by a simple tightbinding calculation and is in good agreement with an ab initio bandstructure calculation.