CO-Laser-Magnetic-Resonance facility for sensitive detection of radical trace gases (NOx, HO2?)

Two laser magnetic resonance patterns for 14NO2 and six patterns for 15NO2, observed using six CO laser transitions, have been analyzed to yield spin corrected zero-field vibration–rotation transition wave numbers and zero-field spin–rotation splittings. The 14NO2 results are in good agreement with results obtained from conventional infrared grating studies. The 15NO2 results allow new values of ν0 = 1582.107 ± 0.008, A′ − A″ = −0.2116 ± 0.0011, and DK′ − DK″ = −1.39 ± 0.20 × 10−4 cm−1 to be determined for the ν3 fundamental of that molecule (errors are 3 standard deviations). Two spectral figures and a list of assigned Zeeman lines are presented to permit using this stable molecule as an aid in adjusting newly constructed instruments. Closed form approximate intensity expressions are given for Zeeman transitions of the type observed in this work, i.e., for sharp partially spin forbidden Zeeman transitions in A type bands of near prolate asymmetric rotors.

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Mid-infrared laser magnetic resonance using the Faraday and Voigt effects for sensitive detection

Molecular Physics ◽

10.1080/00268978200100871 ◽

1982 ◽

Vol 45 (6) ◽

pp. 1131-1139 ◽

Cited By ~ 48

Author(s):

A. Hinz ◽

J. Pfeiffer ◽

W. Bohle ◽

W. Urban

Keyword(s):

Magnetic Resonance ◽

Infrared Laser ◽

Sensitive Detection ◽

Mid Infrared ◽

Laser Magnetic Resonance

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CO laser frequency stability determined by a laser magnetic resonance method

Chemical Physics Letters ◽

10.1016/0009-2614(96)00868-8 ◽

1996 ◽

Vol 260 (1-2) ◽

pp. 257-260 ◽

Cited By ~ 3

Author(s):

Kuang-lin He ◽

Feng-yan Li ◽

Jin-rui Li ◽

Yu-yan Liu ◽

Yang-qin Chen

Keyword(s):

Magnetic Resonance ◽

Resonance Method ◽

Laser Frequency ◽

Frequency Stability ◽

Co Laser ◽

Magnetic Resonance Method ◽

Laser Magnetic Resonance

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Laser magnetic resonance for the v = 1 ← 0 transition of NO () by CO laser

Journal of Molecular Spectroscopy ◽

10.1016/0022-2852(75)90117-4 ◽

1975 ◽

Vol 58 (2) ◽

pp. 316-322 ◽

Cited By ~ 21

Author(s):

Kohzo Hakuta ◽

Hiromichi Uehara

Keyword(s):

Magnetic Resonance ◽

Co Laser ◽

Laser Magnetic Resonance

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The laser magnetic resonance spectrum of the ν1 band of the CCN radical in its state

Canadian Journal of Physics ◽

10.1139/p94-131 ◽

1994 ◽

Vol 72 (11-12) ◽

pp. 1001-1006 ◽

Cited By ~ 11

Author(s):

David A. Gillett ◽

John M. Brown

Keyword(s):

Magnetic Resonance ◽

Diode Laser ◽

Resonance Spectrum ◽

Co Laser ◽

Laser Measurements ◽

Band Origin ◽

Vibronic Interactions ◽

Small Systematic Error ◽

Vibration Rotation ◽

Laser Magnetic Resonance

Vibration–rotation transitions in the ν1, band of the CCN free radical in the [Formula: see text] state have been observed by CO laser magnetic resonance (LMR) spectroscopy. The observations have been combined with existing diode laser data to determine the parameters of an N2 effective Hamiltonian modified to include the Renner–Teller effect in the [Formula: see text] state explicitly. The LMR observations are well modelled by estimated Zeeman parameters that take into account non-adiabatic vibronic interactions. The analysis suggests a small systematic error in the diode laser measurements and leads to a revision of the band origin, ν1, to 1923.252 92 (42) cm−1.

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