{'fraction_non_alphanumeric': 0.03296703296703297, 'fraction_numerical': 0.006279434850863423, 'mean_word_length': 4.962616822429907, '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}}
Symmetric charge exchange for intermediate velocity noble gas projectiles

Experimental measurements of the total charge exchange cross section for 0.2–5.0 keV noble gas ions (He+, Ne+, Ar+, Kr+) with neutral atomic targets of the same species have been performed. The results are compared to theoretical predictions across this energy range as well as to prior data where available. Including these new results into the fitting parameters of state-of-the-art models brings prior measurements at higher energies into agreement. Merits of the two competing theories are discussed in the context of the four noble gas ions He+ through Kr+.