Raman spectrum of sodium iodide

Krishnan, R. S.; Krishnamurthy, N.

doi:10.1007/bf01375254

Cited by 13 publications

(4 citation statements)

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“…To avoid any alteration of the samples by the laser beam, spectra were acquired with a low power laser (~1 mW). Figure 3 clearly shows two main domains:Lattice modes “I-FN”: iodide compounds show the strongest vibrations in the frequency region 25–250 cm −1 22,23 , with the maxima peaking at ~56, 85 and 90 cm −1 , respectively for NaI, AgI (iodargyrite), and KI. The electronic shells of halogen ions and the lattice vibrations of halogen and first neighbours (FN) play an important role in the Raman scattering, as can be seen from the spectra of the three iodide crystalline compounds reported in Fig.…”

Section: Resultsmentioning

confidence: 99%

Iodine solubility and speciation in glasses

Cicconi

Pili

Grousset

et al. 2019

Sci Rep

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The study of iodine in glasses and melts is critical in many areas, from geosciences to materials science to waste management. Glasses in the ternary system Na 2 O-B 2 O 3 -SiO 2 were studied with the goal of identifying a glass matrix able to dissolve large quantities of this element, and to identify the main parameters affecting the solubility of iodine. Two sets of experiments were carried out: the first one with the aim of determining the solubility limit of iodine, and the second one to identify the structural variations occurring within the glass network upon iodine incorporation, and to identify the parameters influencing the most both iodine solubility and speciation. We demonstrated that there is a strong dependence of iodine incorporation on bulk chemistry and glass physical properties. A solubility limit of ~5 mol% I has been assessed for B 2 O 3 -rich glasses and of ~1 mol% for SiO 2 -rich ones, and this composition dependence has been explained by considering the fragility parameter of the glass network. Structural variations in the iodine local environment and in the glass network were characterized by Raman, X-ray Absorption Spectroscopy, and 11 B NMR. Spectroscopy data point out the coexistence of different I species within the glasses, with iodide being the predominant one, surrounded by Na + ions.

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Section: Resultsmentioning

confidence: 99%

Iodine solubility and speciation in glasses

Cicconi

Pili

Grousset

et al. 2019

Sci Rep

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“…Cohen-Solal, Leenhardt and Bassompierre, (70) in a purely theoretical paper, consider the effect of vibrational anharmonicity on the width of Raman and Brillouin bands in crystal spectra and conclude that the Brillouin bands should be Gaussian. Krishnan and Krishnamurthy have published a series of papers on alkali halide crystals (190,195,199) which are summarized (196) in terms of the lattice theories of Born (183) and used to characterize the alum structures. Kleinman (171) has discussed the theory of Raman scattering from F centers in alkali halide crystals.…”

Section: Sverdlov Andmentioning

confidence: 99%

Raman Spectrometry

Jones¹,

Jones²

1966

Anal. Chem.

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“…5. -Microphotometer record of the Raman spectrum of CsI. (R. S. Krishnan and N. Krishnamurthy [16]. )…”

Section: Second Order Raman Spectrum In Csbrmentioning

confidence: 99%

Selection rules for second order infrared and raman processes. I. Caesium chloride structure and interpretation of the second order Raman spectra of CsBr and Csi

et al. 1965

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Raman spectrum of sodium iodide

Abstract: l~aman spectrum of a single crystal of sodium iodide has been recorded for the first time using 2 2537 excitation. The general features of the spectrum are discussed in the light of the existing theories on the dynamics of the alkali halides.

Cited by 13 publications

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Iodine solubility and speciation in glasses

Iodine solubility and speciation in glasses

Raman Spectrometry

Selection rules for second order infrared and raman processes. I. Caesium chloride structure and interpretation of the second order Raman spectra of CsBr and Csi

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