TY - JOUR
T1 - Fourier transform microwave spectroscopy of the SiCl+ ion
AU - Tanaka, Keiichi
AU - Harada, Kensuke
AU - Cabezas, Carlos
AU - Endo, Yasuki
N1 - Funding Information:
The authors (K.T. and K.H) thank for the financial support by International Center of Space Weather Science and Education of Kyushu University . This research was also supported by the Ministry of Science and Technology of Taiwan under Grant Nos. MOST 104-2113-M-009-020 (Y.E. and K.T.) and MOST 105-2811-M-009-026 (C.C.).
Publisher Copyright:
© 2017 Elsevier Inc.
PY - 2018/3
Y1 - 2018/3
N2 - Fourier transform microwave spectra for the J = 1 ← 0 and 2 ← 1 rotational transitions of the SiCl+ ion were observed for two isotopologues (35Cl and 37Cl) in the ground and the first excited vibrational states of the ground 1Σ+ electronic state. Thanks to the high resolution of the FTMW spectrometer, hyperfine structures due to the quadrupole moment of the chlorine nucleus and the nuclear spin-rotation interaction were fully resolved. The observed FTMW spectra were combined with previously reported MMW and diode laser spectra in an analysis to determine the mass-independent Dunham coefficients Uk,l as well as a mass scaling parameter Δ01Cl=-0.856(30). The equilibrium bond length of SiCl+ determined is re=1.9439729(10) Å and the nuclear quadrupole coupling constant of Si35Cl+ is eQqe=-11.8788(23) MHz.
AB - Fourier transform microwave spectra for the J = 1 ← 0 and 2 ← 1 rotational transitions of the SiCl+ ion were observed for two isotopologues (35Cl and 37Cl) in the ground and the first excited vibrational states of the ground 1Σ+ electronic state. Thanks to the high resolution of the FTMW spectrometer, hyperfine structures due to the quadrupole moment of the chlorine nucleus and the nuclear spin-rotation interaction were fully resolved. The observed FTMW spectra were combined with previously reported MMW and diode laser spectra in an analysis to determine the mass-independent Dunham coefficients Uk,l as well as a mass scaling parameter Δ01Cl=-0.856(30). The equilibrium bond length of SiCl+ determined is re=1.9439729(10) Å and the nuclear quadrupole coupling constant of Si35Cl+ is eQqe=-11.8788(23) MHz.
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U2 - 10.1016/j.jms.2017.12.001
DO - 10.1016/j.jms.2017.12.001
M3 - Article
AN - SCOPUS:85039149820
SN - 0022-2852
VL - 345
SP - 39
EP - 45
JO - Journal of Molecular Spectroscopy
JF - Journal of Molecular Spectroscopy
ER -