{'fraction_non_alphanumeric': 0.020080321285140562, 'fraction_numerical': 0.0, 'mean_word_length': 5.338983050847458, '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}}
Observations of prebreakdown and breakdown phenomena in liquid hydrocarbons II. Point-plane geometry

Prebreakdown and breakdown phenomena have been measured optically in n-hexane, cyclohexane, isooctane and toluene using a point-plane electrode geometry. The voltage and electrode spacing were adjusted so that breakdown occurred either on the initial high voltage pulse or, in the case of a cathode point, on the positive overshoot following the initial negative pulse. The field strength for breakdown after voltage reversal is about one-third the strength determined using sphere-sphere electrodes and a unipolar pulse. The use of highly purified liquids and the point-plane electrode geometry serves to separate this study from previous ones.