{'fraction_non_alphanumeric': 0.04409171075837742, 'fraction_numerical': 0.015873015873015872, 'mean_word_length': 4.0265486725663715, '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}}
Desorption of cluster ions from solid Ne by low-energy ion impact

We investigated Ne + ions and Nen + (n = 2–20) cluster ions desorbed from the surface of solid Ne by 1.0 keV Ar + ion impact. Kinetic energy analysis shows a considerably narrower energy distribution for Nen + (n ≥ 3) ions than for Nen + (n = 1, 2) ions. The dependence of ion yields on Ne film thickness indicates that cluster ions (n ≥ 3) are desorbed only from relatively thick films. We conclude that desorbed ions grow into large cluster ions during the outflow of deep bulk atoms to the vacuum.