Terahertz spectroscopy of N 18 O and isotopic invariant fit of several nitric oxide isotopologs
作者： Holger S.P. Müller , Kaori Kobayashi , Kazumasa Takahashi , Kazuko Tomaru , Fusakazu Matsushima
DOI: 10.1016/J.JMS.2014.12.002
关键词: Infrared 、 Terahertz spectroscopy and technology 、 Rotational–vibrational spectroscopy 、 Rotational spectroscopy 、 Magnetic dipole 、 Electric dipole transition 、 Spectral line 、 Hyperfine structure 、 Materials science 、 Atomic physics
摘要: Abstract A tunable far-infrared laser sideband spectrometer was used to investigate a nitric oxide sample enriched in 18O between 0.99 and 4.75 THz. Regular, electric dipole transitions were recorded 2.52 THz, while magnetic the 2 Π 1 / 3 spin-ladders 3.71 These data combined with lower frequency of N 18 O (unlabeled atoms refer 14 16 O, respectively), rotational NO, 15 17 heterodyne infrared NO be subjected one isotopic invariant fit. Rotational, fine hyperfine structure parameters determined along vibrational, rotational, Born–Oppenheimer breakdown corrections. The resulting spectroscopic permit prediction spectra suitable for identification various isotopologs especially interstellar medium by means spectroscopy.
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