Refractive Index at Low Temperature of Tetrachloromethane and Tetrafluoroethane Cryovacuum Condensates

Aldiyarov, A.; Sokolov, D.; Nurmukan, A.; Ramos, M. A.

doi:10.1021/acsomega.0c00969

Cited by 4 publications

(6 citation statements)

References 26 publications

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“…The doublestage cooling system cooled the substrate to 12 K. A resistor heater is connected to the end of the second stage. By the work of the refrigerator, the temperature can be varied in the range of 12−200 K. The temperature is monitored by a TS 670-1.4 silicon diode connected to a M335/20 temperature controller, which kept the temperature constant to within 0.5 K. 24 The Extorr XT100 vacuum chamber instrument is a quadrupole residual gas analyzer that uses precision mechanics and electronics to measure ion currents due to residual gas partial pressures in a vacuum chamber. The Pirani pressure sensor makes vacuum measurements based on the thermal conductivity of the gaseous medium.…”

Section: Methodsmentioning

confidence: 99%

“…Experimental setup for laser-beam patterning during cryovacuum condensation: (6) substrate, (12) photoelectric multiplier, (13) laser, (1) vacuum chamber, (14) metal cylinder, and (15) shield. Number labeling follows that of Figure …”

Section: Methodsmentioning

confidence: 99%

“…The double-stage cooling system cooled the substrate to 12 K. A resistor heater is connected to the end of the second stage. By the work of the refrigerator, the temperature can be varied in the range of 12–200 K. The temperature is monitored by a TS 670-1.4 silicon diode connected to a M335/20 temperature controller, which kept the temperature constant to within 0.5 K. 24 …”

Section: Methodsmentioning

confidence: 99%

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Infrared Analysis and Effect of Nitrogen and Nitrous Oxide on the Glass Transition of Methanol Cryofilms

et al. 2022

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Methanol plays an important role in studying the structure and dynamics of hydrogen bonds in alcohols and other physiologically important compounds in the condensed state. The physical vapor deposition method and two-beam interferometry make it possible to study the structure of polyatomic molecules, the nature and character of intermolecular interactions, and the internal structure of various compounds. Thus, it becomes possible to analyze changes in the internal structure of substances near the points of their phase transitions and glass transitions at ultralow temperatures. In this work, we have studied the effect of nitrogen and nitrous oxide on the dependence of refractive indices of methanol on temperature and on structural-phase transformations upon heating from 16 to 160 K.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Infrared Analysis and Effect of Nitrogen and Nitrous Oxide on the Glass Transition of Methanol Cryofilms

et al. 2022

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“…Reproduced with permission from A.U. Aldiyarov, Refractive Index at Low Temperature of 478 Tetrachloromethane and Tetrafluoroethane Cryovacuum Condensates; published by ACS Omega, 2020 [ 2 ].…”

Section: Figurementioning

confidence: 99%

“…The review of articles helps to understand the significance of the studied parameters (such as refractive index, density, and polarizability) of amorphous structures at low temperatures obtained in the experiment. At present, various methods have been described for studying the refractive index for a wide range of substances [ 1 ], at low temperatures, including for substances such as freon [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Optical Studies of Thin Films of Cryocondensed Mixtures of Water and Admixture of Nitrogen and Argon

et al. 2022

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The interaction of host molecules with water molecules is of primary importance in astrophysical and atmospheric studies. Water-binding interactions continue to attract a broad interest in various fields, especially those related to the formation of assembly structures. Using the physical vapor deposition (PVD) method and a two-beam interferometer with a wavelength of 406 nm, the refractive indices of thin films of a water and nitrogen (argon) mixture were calculated in the range from 15 to 35 K. The results of temperature transformations of the obtained films from a two-beam interferometer, and thermal desorption characteristics from the temperature of condensation to the temperature of evaporation of water (15–180 K), are presented. The relationship between the signal of the interferometer, the refractive index, and the film thickness during glass transition is demonstrated.

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IR Spectrometric Studies of CCL4 and Ar Gas Mixtures

Korshikov¹,

Sokolov²,

Potapchenko³

et al. 2023

J Low Temp Phys

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IR-spectrometric studies of cryo-deposition processes and properties of thin lms of cryo-vacuum condensates of a mixture of carbon tetrachloride and argon obtained by physical cryo-vacuum deposition at various concentrations have been carried out. The measurements were carried out in the temperature range 11 K − 100 K and the pressure of the gas phase 10 − 8 Torr − 10 − 4 Torr. The lm thickness in all experiments performed was d = 2 µm. The vibrational spectra of CCl4 in an argon matrix were measured in the frequency range 400-4200 cm − 1 at mixture concentrations (CCl 4 + Ar) as: (10%-90%; 5%-95%; 1%-99%) and after sublimation of the argon matrix. For the (CCl 4 + Ar) system, thermal adsorption curves for the yield of the matrix gas (Ar) were obtained in the temperature range of 40K and 90K. The existence of cryocapture of CCl 4 molecules of the substance of the Ar matrix was found. The results obtained suggest that, in low-temperature studies of self-organization processes in thin lms, carbon tetrachloride can be used as a matrix.

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Refractive Index at Low Temperature of Tetrachloromethane and Tetrafluoroethane Cryovacuum Condensates

Cited by 4 publications

References 26 publications

Infrared Analysis and Effect of Nitrogen and Nitrous Oxide on the Glass Transition of Methanol Cryofilms

Infrared Analysis and Effect of Nitrogen and Nitrous Oxide on the Glass Transition of Methanol Cryofilms

Optical Studies of Thin Films of Cryocondensed Mixtures of Water and Admixture of Nitrogen and Argon

IR Spectrometric Studies of CCL4 and Ar Gas Mixtures

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