{'fraction_non_alphanumeric': 0.0398406374501992, 'fraction_numerical': 0.02390438247011952, 'mean_word_length': 5.209876543209877, '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}}
Measurement of diffusion coefficients for ground-state and metastable copper atoms in rare gases

The diffusion coefficients for ground-state (2S12/) copper atoms in He, Ne and Ar and those for metastable (2D32/) copper atoms in Ne and Ar were determined experimentally. By producing copper vapour in a low-power hollow cathode discharge, measurements were performed near room temperature. The diffusion coefficients for Cu(2D32/) were approximately equal to the corresponding quantities for Cu(2S12/).