{'fraction_non_alphanumeric': 0.01224105461393597, 'fraction_numerical': 0.0160075329566855, 'mean_word_length': 4.84065934065934, '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}}
Measurement of the electric field strength generated in the experimental chamber by 10 TW femtosecond laser pulse interaction with a solid target

Results are reported on a direct measurement of the electric field of a strong electromagnetic pulse generated through laser interaction with a thick solid target inside an experimental chamber of a 10 TW femtosecond laser. Two Prodyn FD5C conductive D-dot probes were used to demonstrate that the signal-to-noise ratio in this arrangement is 10:1 and that probes are sensitive to the component of the electric field parallel to their axis. Maximum value of the electric field on the order of 18 kV/m was obtained for a 50 fs laser pulse with 270 mJ energy on target. To ascertain a correct estimate of the recorded electric fields a comparative study was performed in an anechoic chamber with two other D-dot probes, involving electromagnetic pulses emitted by a tube antenna and the high-power broadband electromagnetic pulse generator. Some frequency dependence in the FD5C equivalent area was found below 1 GHz.