{'fraction_non_alphanumeric': 0.016129032258064516, 'fraction_numerical': 0.02620967741935484, 'mean_word_length': 5.2125, '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}}
Electron spectroscopy of single and double multiphoton ionization of barium by visible picosecond laser radiation

Barium atoms were singly and doubly ionized using intense picosecond laser pulses. The energy spectra and the angular distributions of the ejected electrons were observed as a function of the laser wavelength in the range 560-650 nm. Intensity dependence measurements of the electron energy spectra were also performed at selected wavelengths, at intensities up to 2.5*1012 W cm-2.