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Regular version of the site
Of all publications in the section: 33
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Article
Novikov L., Voronina E., Chernik V. et al. Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques. 2016. Vol. 10. No. 4. P. 829-833.

The results of experimental investigation of the combined action of 500-keV protons and ~20-eV oxygen plasma on thin polyimide films are presented. The samples are irradiated with a proton fluence of 1014–1016 cm–2 and an oxygen plasma fluence of ~1020 cm–2. The transmission and Raman spectra of the films, which are measured at different stages of sample irradiation, are compared. Data on the mass loss of the samples as a result of surface erosion are presented.

Added: Oct 9, 2016
Article
Khasanshin R., Novikov L.S. Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques. 2014. Vol. 8. No. 4. P. 698-702.

The effect of 40-keV electron and proton radiation with a flux density of 5 × 10 cm−2 s−1 on the deposition of products of thermostimulated gas release from a polymer composite on a substrate made from protective K-208 glass used for the protection of spacecraft solar panels is experimentally investigated. Analysis of the obtained results shows that, unlike proton radiation, electron radiation results in an increase in the optical density of the glass and stimulates the deposition of gas-release products. It is established that the majority of effects generated as a result of exposure of the substrate to electron radiation are neutralized by protons upon combined irradiation with electrons and protons.

Added: Mar 2, 2015
Article
Bondarenko G., Gaidar A. I., Petrov V. S. et al. Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques. 2015. No. 9. P. 679-683.

USB15 boronmixed graphite samples subjected to bombardment with 90eV ions of an accelerated oxygen plasma flow are investigated via scanning electron microscopy, Xray microanalysis, Xray diffraction analysis, and mass spectrometry of the thermaldesorption kinetics and volatile compounds. It is revealed that the surface is enriched with oxygen and irradiation is not accompanied by structural changes. The material possesses an imperfect finegrained structure with a very low graphitization level. Thermaldes orption mass spectrometry indicates that spectral lines of boron oxide appear at temperatures of greater than 150°C and reach their maximum at 320–410°C. This corroborates the assumption that an inert boronoxide film is formed on a cold USB15 surface under the action of oxygen ions and evaporates with increasing temperature. The latter leads to a loss in the protective properties of the boron dopant.

Added: Sep 15, 2015
Article
Verbus V. A., Kozlov V. Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques. 2012. Vol. 6. No. 5. P. 726-729.

The effect of spherical quantum objects (scatterers) embedded into semiconductor barriers on the tunnel current flowing through them has been studied. For this purpose, the problem of the scattering of incident and reflected wave functions (damping if their energy is less than the barrier potential) of the electron by the stepwise spherically symmetric scattering potential has been solved.

Added: Feb 24, 2015
Article
Kolokoltsev V. N., Kulikauskas V. S., Bondarenko G.G. et al. Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques. 2017. Vol. 11. No. 1. P. 63-68.

C, Cu and W element profiles in films deposited using Plasma Focus facility (PF-4, FIAN) were studied by the method of Rutherford backscattering of 2 MeV He+ ions. The films were deposited on glass substrates in the Ar orifice gas. The element profiles were found to depend significantly on the particle kinetic energy. The penetration depth of particles with ~105 m/s speed was about 1.5 μm. The corresponding glass thickness element profiles were non-linear. For each element, there was the maximum layer depth under the glass surface. The formation of Cu, W and C layers under the glass surface and their overlapping was the feature of the films deposited using the PF-4 facility. Such an arrangement of layers told significantly this method of film deposition from the conventional methods used low deposition atom rates, as well the diffusion. Because of mentioned characteristics of deposition, the obtained films were dielectrics.

Added: Mar 6, 2017
Article
Novikov L., Voronina E., Chernik V. et al. Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques. 2016. Vol. 10. No. 3. P. 617-622.

We present the results of the simulation tests of samples of polymer nanocomposites based on carbon nanotubes for resistance to oxygen plasma in the Earth’s upper atmosphere. Data on the weight loss of the samples, the results of analysis of their surface structure after irradiation, and data on arrays of carbon nanotubes damaged under the effect of oxygen plasma are given. Possible mechanisms of destruction of the nanotubes are discussed.

Added: Sep 17, 2016
Article
Бакланова К. Д., Долганов П. В., Долганов В. К. Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques. 2021. Vol. 15. No. 4. P. 829-832.

The transmission, reflection, and luminescence spectra of two types of samples of a cholesteric photonic crystal are measured: with the orientation of the n director specified by the surface of the optical cell, and when the n director is disoriented on the cell surface. In samples with surface orientation, a perfect helical structure is formed with characteristic features of the luminescence spectra in the photonic band gap due to the density of photonic states. The density of photonic states is restored. The lower threshold value of the surface-anchoring potential W is estimated when the director deviates from the orientation direction given by the surface. The transformation of the luminescence spectra and the temperature dependence of the position of the bands during the transition from surface-oriented structures to disordered ones are observed.

Added: Sep 1, 2021
Article
Andreev D. V., Bondarenko G., Stolyarov A. A. Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques. 2016. Vol. 10. No. 2. P. 450-454.
The change in the charge state of metal–insulator–semiconductor (MIS) structures with a twolayer silicon-dioxide–phosphosilicate-glass gate insulator upon their modification under electron irradiation and high-field electron injection is studied. A thin glass film is formed by doping a thermal SiO2 film formed on the surface of a silicon wafer with phosphorus. It is found that the negative charge accumulated in a thin film of phosphosilicate glass during high-field tunneling electron injection or electron irradiation can be used to adjust the threshold voltage and to increase the charge stability and the breakdown voltage of MIS devices. It is shown that MIS structures need to be annealed at a temperature of approximately 200°C to obtain high thermal-field stability after modification of their charge state by the electron injection or electron irradiation. It is found that the use of a two-layer silicon-dioxide–phosphosilicate-glass gate dielectric increases the average value of the charge injected into the insulator to breakdown and decreases the amount of defect structures.  
Added: May 28, 2016
Article
Petukhov V., Kulikauskas V., Novikov L. et al. Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques. 2014. Vol. 8. No. 3. P. 440-443.

Using methods of X-ray fluorescence analysis (XRFA), the Rutherford backscattering of ions (RBS) and spectral X-ray microanalysis (SXRM) in combination with scanning electron microscopy (SEM), we study the elemental composition and structure of contaminants on the surface of a metallic panel with samples of different materials exposed to outer space for 12 years. It turns out that the main elements of the contaminants are C, O, Si, S, Ca, Fe, and Zn. Since these elements are the constituents of materials located on the panel, they are present as a result of destruction of the materials under the action of outer-space factors. X-ray phase analysis (XRPA) of the contaminants shows that carbon is present in the form of an amorphous graphite phase with a small addition of crystalline graphite, while the other components are in an amorphous state. Crystalline silicium dioxide and other silicium compounds are not found.

Added: Mar 2, 2015
Article
Chernykh I., Mamichev D., Grishchenko Y. V. et al. Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques. 2011. Vol. 5. No. 5. P. 941-944.
Nanostructures consisting of metal nanogratings made of Au on quartz substrates are produced. The structural characteristics of samples are studied using atomic force and scanning electron microscopies (AFM and SEM). The optical properties of samples in the visible spectral region are also studied. The studies show that these nanostructures are characterized by a high degree of periodicity and the nanowire profile shape is close to the rectangular one. Effective excitation of surface plasmon–polariton waves is observed in nanogratings; in this case the effectiveness of their excitation depends considerably on the polarization of exciting radiation and on the grating filling factor. It is established that various types of plasmon–polariton waves (local or traveling waves) can be excited depending on the grating filling factor. Optical effects observed in the given structures can be used to produce high-speed sensor and optoelectronic elements based on them, such as highly sensitive new-generation biosensors, optical filters, polarizers, and modulators.
Added: Apr 12, 2012
Article
Novikov L., Mileev V., Voronina E. et al. Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques. 2009. Vol. 3. No. 2. P. 199-214.

Radiation conditions are described for various space regions, radiation-induced effects in spacecraft materials and equipment components are considered and information on theoretical, computational, and experimental methods for studying radiation effects are presented. The peculiarities of radiation effects on nanostructures and some problems related to modeling and radiation testing of such structures are considered.

Added: Mar 2, 2015
Article
Bondarenko G., Didyk A. Y., Borovitskaya I. V. et al. Journal of Surface Investigation: X-Ray, Synchrotron and Neutron Techniques. 2017. Vol. 11. No. 3. P. 557-561.

Assemblies made of Ta|CD2|Ta, Ta|Ta|CD2|Ta|Ta and Nb|CD2|Nb foils are irradiated with pulses of high-temperature argon plasma created by means of a “Plasma Focus” setup. The irradiated foil samples are investigated by recording the recoil nuclei of hydrogen and deuterium. It is found that hydrogen and deuterium are redistributed in foil stacks. The ultradeep penetration of light gas impurities (hydrogen and deuterium) can be explained by the influence of shock waves on the foils and accelerated diffusion under an external force.

Added: Jun 8, 2017
Article
Сказочкин А. В., Крутоголов Ю. К., Кунакин Ю. И. и др. Поверхность. Рентгеновские, синхротронные и нейтронные исследования. 1996. № 5. С. 75-82.
Added: Dec 9, 2013
Article
Андреев Д. В., Бондаренко Г. Г., Андреев В. В. и др. Поверхность. Рентгеновские, синхротронные и нейтронные исследования. 2020. № 3. С. 53-57.
Added: Feb 17, 2020
Article
Колокольцев В. Н., Куликаускас В. Н., Бондаренко Г. Г. и др. Поверхность. Рентгеновские, синхротронные и нейтронные исследования. 2017. № 1. С. 41-46.
Added: Jan 17, 2017
Article
Бондаренко Г. Г., Дидык А. Ю., Боровицкая И. В. и др. Поверхность. Рентгеновские, синхротронные и нейтронные исследования. 2017. № 5. С. 86-90.
Added: May 7, 2017
Article
Бондаренко Г.Г., Бонк О. Г., Кристя В. И. Поверхность. Рентгеновские, синхротронные и нейтронные исследования. 2003. № 4. С. 70-73.
Added: Nov 25, 2013
Article
Андреев Д. В., Бондаренко Г. Г., Столяров А. А. Поверхность. Рентгеновские, синхротронные и нейтронные исследования. 2016. № 4. С. 94-99.
Added: Aug 1, 2016
Article
Бондаренко Г.Г., Удрис Я. Я. Поверхность. Рентгеновские, синхротронные и нейтронные исследования. 1999. № 4. С. 70-77.
Added: Dec 4, 2013
Article
Колокольцев В. Н., Куликаускас В. С., Бондаренко Г. Г. и др. Поверхность. Рентгеновские, синхротронные и нейтронные исследования. 2016.

The method of Rutherford back scattering of He + ions with 2 MeV studied the distribution profiles of the elements C, Cu and W in the films deposited on the discharge installation type "plasma focus". The films are deposited on glass substrates in Ar plasma-forming gas. It is found that the element distribution profiles vary significantly from the kinetic energy of the particles. Particles having a velocity about 105 m / s, penetrates to a depth of about 1.5 microns. Appropriate distribution profiles elements for glass thickness are nonlinear. For each element, there is a maximum depth of the layer under the surface of the glass. A feature of the films obtained on the setting of "plasma-focus" is the formation of layers of the elements Cu, W and C at the glass surface and their mutual overlap. This arrangement of layers distinguishes described film deposition method of the commonly used methods of application at low speeds the deposition of atoms, as well as by diffusion. It is found that the obtained film are insulators.

Added: May 18, 2016
Article
Новоселова Е. Г., Смирнов И. С., Черных И. Поверхность. Рентгеновские, синхротронные и нейтронные исследования. 2011. № 10. С. 1-4.
Added: Mar 6, 2012
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