Brillouin spectra and structural relaxation in ZnCl2–KCl binary melts

Hongmin Zhu; Katsuyuki Iwabuchi; Yuzuru Sato; Tsutomu Yamamura

doi:10.1143/JJAP.33.3220

Brillouin spectra and structural relaxation in ZnCl₂–KCl binary melts

Hongmin Zhu, Katsuyuki Iwabuchi, Yuzuru Sato, Tsutomu Yamamura

ENG - Metallurgy

Research output: Contribution to journal › Article › peer-review

Abstract

The Brillouin scattering experiment has been carried out for molten ZnCl₂-KCl binary melts over the composition range 0–45 mol% KCl. The complete profiles of Rayleigh-Brillouin spectra were obtained at scattering angle of 90°, and at temperatures ranging from 550 to 1000 K by the use of carefully purified samples. Marked change in the shape of the spectrum with variations in temperature and composition has been observed and has been concluded to be due to structural relaxation in the melts. A dispersion of sound wave propagation was observed in the melts in the hypersonic region. The spectra have been analyzed based on the viscoelastic theory on the assumption of single relaxation. The sound velocities at the limiting low and high frequencies and the relaxation time have been determined.

Original language	English
Pages (from-to)	3220-3225
Number of pages	6
Journal	Japanese journal of applied physics
Volume	33
Issue number	5S
DOIs	https://doi.org/10.1143/JJAP.33.3220
Publication status	Published - 1994 May

Keywords

Brillouin scattering
Brillouin spectrum
Chloride
Light scattering
Molten salt
Potassium
Relaxation
Zinc chloride

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.33.3220

Cite this

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title = "Brillouin spectra and structural relaxation in ZnCl2–KCl binary melts",

abstract = "The Brillouin scattering experiment has been carried out for molten ZnCl2-KCl binary melts over the composition range 0–45 mol% KCl. The complete profiles of Rayleigh-Brillouin spectra were obtained at scattering angle of 90°, and at temperatures ranging from 550 to 1000 K by the use of carefully purified samples. Marked change in the shape of the spectrum with variations in temperature and composition has been observed and has been concluded to be due to structural relaxation in the melts. A dispersion of sound wave propagation was observed in the melts in the hypersonic region. The spectra have been analyzed based on the viscoelastic theory on the assumption of single relaxation. The sound velocities at the limiting low and high frequencies and the relaxation time have been determined.",

keywords = "Brillouin scattering, Brillouin spectrum, Chloride, Light scattering, Molten salt, Potassium, Relaxation, Zinc chloride",

author = "Hongmin Zhu and Katsuyuki Iwabuchi and Yuzuru Sato and Tsutomu Yamamura",

year = "1994",

month = may,

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language = "English",

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journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

issn = "0021-4922",

publisher = "Japan Society of Applied Physics",

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TY - JOUR

T1 - Brillouin spectra and structural relaxation in ZnCl2–KCl binary melts

AU - Zhu, Hongmin

AU - Iwabuchi, Katsuyuki

AU - Sato, Yuzuru

AU - Yamamura, Tsutomu

PY - 1994/5

Y1 - 1994/5

N2 - The Brillouin scattering experiment has been carried out for molten ZnCl2-KCl binary melts over the composition range 0–45 mol% KCl. The complete profiles of Rayleigh-Brillouin spectra were obtained at scattering angle of 90°, and at temperatures ranging from 550 to 1000 K by the use of carefully purified samples. Marked change in the shape of the spectrum with variations in temperature and composition has been observed and has been concluded to be due to structural relaxation in the melts. A dispersion of sound wave propagation was observed in the melts in the hypersonic region. The spectra have been analyzed based on the viscoelastic theory on the assumption of single relaxation. The sound velocities at the limiting low and high frequencies and the relaxation time have been determined.

AB - The Brillouin scattering experiment has been carried out for molten ZnCl2-KCl binary melts over the composition range 0–45 mol% KCl. The complete profiles of Rayleigh-Brillouin spectra were obtained at scattering angle of 90°, and at temperatures ranging from 550 to 1000 K by the use of carefully purified samples. Marked change in the shape of the spectrum with variations in temperature and composition has been observed and has been concluded to be due to structural relaxation in the melts. A dispersion of sound wave propagation was observed in the melts in the hypersonic region. The spectra have been analyzed based on the viscoelastic theory on the assumption of single relaxation. The sound velocities at the limiting low and high frequencies and the relaxation time have been determined.

KW - Brillouin scattering

KW - Brillouin spectrum

KW - Chloride

KW - Light scattering

KW - Molten salt

KW - Potassium

KW - Relaxation

KW - Zinc chloride

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