{'fraction_non_alphanumeric': 0.059817030260380016, 'fraction_numerical': 0.08092892329345532, 'mean_word_length': 4.406844106463878, '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}}
High-Resolution Fourier Transform Emission Spectroscopy of the A6Σ+-X6Σ+ System of CrD

Abstract The CrD molecule has been investigated at high resolution in the 700nm-1 μm spectral region using a Fourier transform spectrometer. The CrD molecules were formed in a chromium hollow cathode lamp operated with neon gas and a trace of deuterium. Compared with the previous work on this molecule the present spectra provide greatly improved measurements of line positions and allow the analysis of several new bands. The rotational analysis of the 0-1, 0-0, 1-0, and 1-2 bands has been performed providing the following principal molecular constants for the ground X6Σ+ state: ωe = 1183.1958(21) cm−1, ωexe = 15.6006(9) cm−1, B e = 3.175443(21) cm −1 , and r e = 1.654730(5) A . The excited A6Σ+ state, with principal constants T00 = 11559.7206(6) cm−1, ΔG( 1 2 ) = 1066.4202(10) cm−1, Be = 2.762705(13) cm−1, and re = 1.774034(4) A, is involved in several perturbations. The observed perturbations in the ν = 0 and ν = 1 vibrational levels are similar to those observed previously in the ν = 0 vibrational level of the A6Σ+ state of CrH. these perturbations arise from interactions with a nearby a4Σ+ state with preliminary molecular constants: T00 = 11 176 cm−1, Be = 3.19 cm−1. This state located below the A6Σ+ state and is the lowest excited state of this molecule, supporting the conclusions of our previous work on CrH.