Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Brillouin Spectra of Ethyl Ether and Carbon Disulfide
View through CrossRef
Brillouin spectra of ethyl ether and carbon disulfide (at 20.0°C) were investigated for scattering angles of 20°–145°. A single-mode laser was used for excitation; scattered light was collected in a solid angle of 1.5×10−4 sr; and the total instrumental width was ∼100 Mc/sec. Linewidths of 10±5 to 215±10 Mc/sec were measured and velocities determined to an accuracy of ±0.5%. In ethyl ether the phonon velocity and attenuation were constant in the frequency range 0.8–4.1 Gc/sec, and the values agreed with acoustic measurements at 100 Mc/sec. In CS2 a considerable decrease in attenuation was observed in the range 1.7–6.1 Gc/sec, with the value at high frequency approaching the classical attenuation attributed to shear viscosity. This variation in attenuation is in good agreement with the theory of a single relaxation time for the total vibrational specific heat, as established by acoustic measurements in the frequency range 2–200 Mc/sec.
Acoustical Society of America (ASA)
Title: Brillouin Spectra of Ethyl Ether and Carbon Disulfide
Description:
Brillouin spectra of ethyl ether and carbon disulfide (at 20.
0°C) were investigated for scattering angles of 20°–145°.
A single-mode laser was used for excitation; scattered light was collected in a solid angle of 1.
5×10−4 sr; and the total instrumental width was ∼100 Mc/sec.
Linewidths of 10±5 to 215±10 Mc/sec were measured and velocities determined to an accuracy of ±0.
5%.
In ethyl ether the phonon velocity and attenuation were constant in the frequency range 0.
8–4.
1 Gc/sec, and the values agreed with acoustic measurements at 100 Mc/sec.
In CS2 a considerable decrease in attenuation was observed in the range 1.
7–6.
1 Gc/sec, with the value at high frequency approaching the classical attenuation attributed to shear viscosity.
This variation in attenuation is in good agreement with the theory of a single relaxation time for the total vibrational specific heat, as established by acoustic measurements in the frequency range 2–200 Mc/sec.
Related Results
Neural network-based classification of X-ray fluorescence spectra of artists’ pigments: an approach leveraging a synthetic dataset created using the fundamental parameters method
Neural network-based classification of X-ray fluorescence spectra of artists’ pigments: an approach leveraging a synthetic dataset created using the fundamental parameters method
AbstractX-ray fluorescence (XRF) spectroscopy is an analytical technique used to identify chemical elements that has found widespread use in the cultural heritage sector to charact...
Observation of induced shear acoustic phonons by Brillouin scattering
Observation of induced shear acoustic phonons by Brillouin scattering
The Brillouin scattering measurement is an efficient nondestructive and noncontact method which enables the simultaneous measurement of longitudinal and shear wave velocities at hy...
Nordic Seas total dissolved inorganic carbon data in CARINA
Nordic Seas total dissolved inorganic carbon data in CARINA
Abstract. Water column data of carbon and carbon relevant hydrographic and hydrochemical parameters from 188 previously non-publicly available cruises in the Arctic, Atlantic, and ...
The practice of writing inside an Egyptian monastic settlement: preliminary material characterisation of the inks used on Coptic manuscripts from the Monastery of Apa Apollo at Bawit
The practice of writing inside an Egyptian monastic settlement: preliminary material characterisation of the inks used on Coptic manuscripts from the Monastery of Apa Apollo at Bawit
AbstractOver the last few years, the Federal Institute for material research (BAM, Berlin) together with the Centre for the Study of Manuscript Cultures (CSMC, University of Hambur...
Scientific Realism and the Divide et Impera Strategy: The Ether Saga Revisited
Scientific Realism and the Divide et Impera Strategy: The Ether Saga Revisited
Using the optical ether as a case study, this article advances four lines of consideration to show why synchronic versions of the divide et impera strategy of scientific realism ar...
The transition within the transition: the Übergang from the Selbstsetzungslehre to the ether proofs in Kant’s Opus postumum
The transition within the transition: the Übergang from the Selbstsetzungslehre to the ether proofs in Kant’s Opus postumum
Abstract
Recent literature on Kant’s Opus postumum has typically focused on two parts of the drafts: the ether proofs and the Selbstsetzungslehre. Eckart Förster’s interpretation i...
Consolidation tests in archaeological wall painting: comparing treatments depending on the painting technique
Consolidation tests in archaeological wall painting: comparing treatments depending on the painting technique
Consolidation is a treatment of great importance for archaeological wall paintings due to their state of preservation, in which the lack of cohesion of the mortar and the pulverule...
Nordic Seas dissolved oxygen data in CARINA
Nordic Seas dissolved oxygen data in CARINA
Abstract. Water column data of carbon and carbon relevant hydrographic and hydrochemical parameters from 188 previously non-publicly available cruises in the Arctic, Atlantic, and ...