{'fraction_non_alphanumeric': 0.010507880910683012, 'fraction_numerical': 0.0, 'mean_word_length': 5.426966292134831, '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}}
Analytical approximations to the rate coefficients for charge exchange and ionization of neutral beams

Analytic expressions are used to approximate the cross-section data for charge exchange between hydrogen isotopes and between a neutral hydrogen isotope and a helium isotope ion, and for ionization of hydrogen isotope neutrals by positive ions and by electrons. These expressions are then integrated over a Maxwellian distribution to obtain analytic formulas for the ⟨σv⟩ average as a function of the plasma temperature and the initial energy of the injected neutral.