{'fraction_non_alphanumeric': 0.019704433497536946, 'fraction_numerical': 0.03940886699507389, 'mean_word_length': 5.253846153846154, '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}}
Fission-neutron and fragment angular distributions from threshold photofission of 232Th and 238U

The fission-neutron angular distributions have been measured relative to the incident beam in the photofission of 232Th and 238U near the fission threshold. The Harwell 45 MeV electron linac was used to provide bremsstrahlung with end-point energies of 6.35 and 7.10 MeV for the 232Th measurements and 5.75 and 6.15 MeV for the 238U measurements. The corresponding fission-fragment angular distributions were also obtained. The experimental technique utilized the solid-state track detector Makrofol which exhibits damage tracks under fission-fragment irradiation. The fission neutrons were detected by backing the Makrofol with a foil of depleted uranium metal, while the fission fragments were detected directly.