{'fraction_non_alphanumeric': 0.025284450063211124, 'fraction_numerical': 0.029077117572692796, 'mean_word_length': 5.491803278688525, '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}}
Particulate radiations emitted during electron capture and isomeric transitions.

The author discusses the recent article by Rao, Govelitz, and Sastry which reveals similar radiotoxicities for the electron-capture radionuclide Tl-201 and the beta-emitting radionuclide Tl-204, in spite of the 6:1 ratio of absorbed dose from Tl-204 compared with Tl-201 as computed by conventional dosimetric methods. This observation implies that the radiobiological effectiveness is considerably greater for radiations from Tl-201 than for those from Tl-204. The radiations responsible for the local absorbed dose from Tl-201 are principally low-energy electrons resulting from nonradiative Auger and Coster-Kronig transitions. An explanation of these transitions in relatively nontechnical terms is given.