Laser-induced fluorescence excitation spectra due to the transition of NO in magnetic fields up to 10T

Takazawa, Ken

doi:10.1016/j.jms.2003.10.005

Cited by 4 publications

(1 citation statement)

References 20 publications

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“…Due to these reasons, the nitrogen monoxide molecule has been investigated intensively, both experimentally and theoretically, in the past years. [7][8][9][10][11][12][13][14] The spectra included bands in the radio wave, microwave, infrared, visible and UV regions. The wealth of information aids in giving a complete and detailed picture of the electronic structure of NO beyond its first ionization limit.…”

Section: Introductionmentioning

confidence: 99%

Factors affecting improvement of fluorescence intensity of quartet and doublet state of NO diatomic molecule excited by glow discharge*

Khalil¹,

Al-Tuwirqi²,

Gondal³

et al. 2018

Chinese Phys. B

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We report on the observation of new fluorescence emission spectral transitions obtained from NO diatomic molecule in the region from ultraviolet (UV) to near infrared (NIR) in a low power glow discharge system. This glow discharge electronic excitation populates different quartet and doublet states of NO in its proximity such as the A 2Σ (υ = 2), b 4Σ− (υ = 3), B 2Π (υ = 4), and X 2Π (υ = 33−32) states. Due to inter-system crossing, emission lines originating from these levels to lower lying states are recorded and spectral line assignments are performed. The observed systems include b 4Σ−−a 4Π, B 2Π−a 4Π, a 4Π−X 2Π, A 2Σ−X 2Π, X 2Π−X 2Π (33–15), X 2Π–X 2Π (33–17), X 2Π–X 2Π (33–20), and X 2Π–X 2Π (33–18). This new information will conduce to the better understanding of the interesting features of NO molecule. Such parameters that affect the recording of low density of NO molecules are also discussed In addition to the factors such as the time evolution, argon gas concentration relative to NO mixture, the percentage of NO molecular gas concentration, discharge electric current signals and discharge applied voltage are studied. Those factors would enhance the fluorescence signal intensity of NO molecules. The recent results might be significant as reference data for optimizing the glow discharge spectrometer and diagnostics of NO gas.

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