A spectral model of the FeO orange bands with a comparison between a laboratory spectrum and a night airglow spectrum observed by OSIRIS on Odin

作者：Gattinger R L^*; Evans W F J; Degenstein D A; Llewellyn E J

来源：Canadian Journal of Physics, 2011, 89(2): 239-248.

DOI：10.1139/P11-003

Emissions from the FeO orange bands have been observed in the laboratory for many decades. The transition has been identified as D((5)Delta(i))-X((5)Delta(i)) where the subscript identifies the five Omega spin components. While the ground-state molecular constants are well-known, information on the upper state is less precise, and this is primarily due to significant energy level perturbations. Using the available constants, a preliminary spectral simulation model of the orange bands has been developed with a wavelength accuracy of approximately 1/3 nm. Using data from the OSIRIS spectrograph on board the Odin spacecraft, these FeO orange bands have been identified as a component of the night airglow spectrum emanating from the upper mesosphere. The spectral simulation model is combined with the OSIRIS observations to determine the vibrational development of the FeO emissions in the airglow. The model is also applied to published laboratory observations of the orange bands, conducted at much higher pressure than for the airglow, to test for different vibrational development.

• 出版日期2011-2