{'fraction_non_alphanumeric': 0.015424164524421594, 'fraction_numerical': 0.005141388174807198, 'mean_word_length': 5.232, '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}}
Experimental investigations of the hyperfine structure in neutral La: II. Even parity levels

This work contains the results of experimental investigations of the fine and the hyperfine structure for electronic levels belonging to even configurations in the lanthanum atom, performed with laser spectroscopy in a hollow cathode discharge with the detection by the laser-induced fluorescence (LIF) or optogalvanic method. The results of the measurements of the magnetic dipole interaction constants A for 98 levels are presented. The hyperfine structure of almost all of these levels has not been investigated before. Moreover, the values of energies, quantum numbers J as well as the hyperfine structure constants for 51 entirely new even parity levels in the La atom are given.