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Self-broadening coefficients of transitions belonging to the ν 5 band of methyl chloride have been calculated using a semi-classical model based on the Anderson–Tsao–Curnutte (ATC) theory, including some improvements proposed by Robert and Bonamy. The calculations show the predominance of the dipole–dipole interaction. To better match the experimental measurements performed at room temperature...
We design a fully stable numerical solution of the Maxwell's equations with the transfer matrix method (TMM) to understand the interaction between an electromagnetic field and a finite, one-dimensional, non-periodic structure. Such an exact solution can be tailored from a conventional solution by choosing an adequate transformation between its reference systems, which induces a mapping between its...
The conventional Lorenz–Mie theory is generalized for a case when the light source is partially spatially coherent. The influence of the degree of coherence of the incident field on the generalized Mueller matrix and the spectral degree of coherence of the scattered light is analytically studied by using the vector field instead of the scalar field to extend previous results on the angular intensity...
Soda-lime glasses doped with Eu 3+ were synthesized using a variety of compositions, namely changing the fraction of CaO or Eu 2 O 3 . Those glasses were characterized with several techniques, including ellipsometry, UV–vis–NIR absorption spectroscopy, steady-state photoluminescence spectroscopy and time-resolved luminescence. The compositions' effects on optical properties...
This paper reports on the spectral results of Dy 3+ (1.0mol%) ions-doped TeO 2 –ZnO–PbO–PbF 2 –Na 2 O (TZPPN) glass. Raman spectrum measurements, differential thermal analysis (DTA) profiles of this rare-earth ion-doped glass were carried out. From the DTA thermogram, glass transition (T g ), crystallization (T c ) and melting (T m ) temperatures...
We study spectra of a plasma created by the laser ablation of ZnS targets in a vacuum and report 47 (not observed previously) Zn I lines in the range of 1300–6400cm −1 . From the recorded spectra we determine energies of 5g, 6g, 7f, 6h, 7h and 8h Zn I levels. We also calculate a large list of transition probabilities and oscillator strengths for Zn I in the observed spectral range.
Based on the Rayleigh hypothesis and the Floquet's theorem, we propose a vector method for the problem of TE electromagnetic wave scattering by one-dimensional periodic conducting surface. The numerical results are consistent with the integral method and the T-matrix method in the particular case where the incidence plane is perpendicular to the row direction of the periodic surface. For the general...
Short-wave infrared (SWIR) band in wavelength near 1.6μm is one of the key bands used for satellite observation of Carbon Dioxide (CO 2 ). However, one major uncertainty to use this band for the CO 2 retrieval is the scattering by cloud and aerosol particles. To better understand the scattering properties of soot-containing particles in this band, this paper studied the scattering...
The Stark widths of 36 Fe II and 27 Ni II spectral lines are measured by laser induced breakdown spectroscopy (LIBS). The use of fused glass samples prepared by borate fusion is evaluated for Stark broadening measurements in LIBS experiments. The spectra of laser-induced plasmas generated from fused glass samples containing oxides show improved line-to-background ratios compared to those measured...
Hyperfine structure analyses have been performed in the high-resolution spectrum of the neutral copper atom covering the wavelength region of 353–809nm using Fourier transform spectroscopy. A DC discharge of natural copper produced in a liquid nitrogen cooled hollow cathode lamp used as a light source and a photomultiplier tube as well as Si photodiodes were employed as the light detectors. The hfs...
In the recent beam-foil experiment, resonances have been observed in decay of the beam-foil excited 2p and 2s states of H-like Fe ions at very large times. Qualitatively, the resonances were explained as a consequence of cascading down from the Rydberg states (n⪢1,l=n−1) to 2p state. Full explanation requires the theoretical values of the population probabilities Pn,l of the large-l Rydberg states...
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