Conveners
X-ray structural analysis: Combustion and detonation
- Nikolay Lyakhov (Institute of Solid State Chemistry and Mechanochemistry SB RAS)
X-ray structural analysis: Small angle scattering
- Alexander Shmakov (Boreskov Institute of Catalysis SD RAS)
X-ray structural analysis: Diffraction experiments
- Boris Tolochko (Institute of solid state chemistry and mechanochemistry)
Dr
Ewgeny Smirnov
(РRFNC-FNIITF, Snezhinsk, Russia)
06/07/2016, 10:20
X-ray structural analysis
Oral
The report presents analysis of experimental data on hydrostatic and shock-wave compression of energy-saturated material. The semi-empirical Mie-Gruneisen equation of state was used to describe thermodynamic properties of metastable molecular crystals without considering phase transitions. The equation of state describes experimental data on isothermal compression of a molecular crystal, and...
Mr
Lev Shekhtman
(Budker Institute of Nuclear Physics)
06/07/2016, 11:00
X-ray structural analysis
Oral
Methods of dynamic imaging of explosions at a synchrotron radiation (SR) beam and small-angle X-ray scattering experiments with exploding samples are being developed in the Siberian Synchrotron Radiation Center (SSRC) at the Budker Institute of Nuclear Physics for more than fifteen years. The detector for imaging of explosions (DIMEX) was developed for these purposes and successfully...
Dr
Konstantin Ten
(LIH SB RAS)
06/07/2016, 11:20
X-ray structural analysis
Oral
When a strong shock wave leaves a metal, flows of particles of different sizes are ejected from the wave’s free surface (shock-wave "dusting", ejecta) [1,2]. Unlike a cumulative jet, such a flow consists of separate particles having a size of a few microns to hundreds of microns. It was assumed that there are also finer particles in such a flow, but the existing techniques are not able to...
Dr
Igor Dolbnya
(Diamond Light Source)
06/07/2016, 11:40
X-ray structural analysis
Oral
Birefringence has been observed in anisotropic materials transmitting linearly polarized X-ray beams tuned close to an absorption edge of a specific element in the material. Synchrotron bending magnets provide X-ray beams of sufficiently high brightness and cross section for spatially resolved measurements of birefringence. The recently developed X-ray Birefringence Imaging technique has been...
Dr
Aleksey Arakcheev
(Budker INP)
06/07/2016, 13:00
X-ray structural analysis
Invited Oral
The residual mechanical deformation and stress were measured in the preliminary experiments carried out at synchrotron radiation (SR) scattering stations at VEPP-3 in the Siberian Center of Synchrotron and Terahertz Radiation (“Precision diffractometry and anomalous scattering”, “Diffractometry in hard X-rays”). The deformation and stress were calculated on the basis of the dependence of the...
Dr
Vitaliy Pilyugin
(M.N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences (IMP UB RAS))
06/07/2016, 13:40
X-ray structural analysis
Oral
After severe plastic deformation under the high pressure torsion technique a number of brittle refractory metals such as Mo, W, Re and Ni3Ge intermetallic compound with L12
structure have been investigated. These studies are of great interest, since the effects of shear deformation under high pressure have not been previously studied on these materials. In all cases the grain refinement...
Dr
Evgeniy Chesnokov
(Istitute of Chemical Kinetics)
06/07/2016, 14:00
X-ray structural analysis
Oral
Transformation of the short optical pulses in a medium with a high optical density is described. In such conditions an intense free-induction signal it formed, which has a specific type of the oscillations. These oscillations were observed experimentally in rotation spectra of HCN and HBr molecules using a terahertz free electron laser as a source of optical pulses and ultra-fast Schottky...
Mr
Danil Eselevich
(ISSC UB RAS)
06/07/2016, 14:20
X-ray structural analysis
Oral
To improve the characteristics of rocket propellants, high-energy metal powders are used. Aluminum powders are most widely employed metallic combustibles. However, the presence of an oxide film on the surface of particles is a grave disadvantage, which does not allow using their energy potential in full.
This work presents results of a study of the oxidation process of Al powder modified...
Dr
Alexander Shmakov
(Boreskov Institute of Catalysis SD RAS)
06/07/2016, 15:00
X-ray structural analysis
Oral
In situ diffraction experiments at VEPP-3 beamlines #2 and #6.
Dr
Uliana Ancharova
(ISSCM SB RAS)
06/07/2016, 15:20
X-ray structural analysis
Oral
Depending on substitution degree and external conditions strongly-nonstoichiometric strontium ferrites have certain features of the local structure [1-3]. It is related to extremely high amount of oxygen vacancies, laying beyond the homogeneity region of perovskite or any of vacancy-ordered phases. That vacancy concentration tend to be adopted by the structure through formation of local...
Dr
Sergey Rashchenko
(Institute of geology and mineralogy SD RAS)
06/07/2016, 15:40
X-ray structural analysis
Oral
The interest to carbonates is determined by their obvious practical importance, as well as their abundance in the Earth’s interior and a key role in magma generation, plume upwelling and diamond growth [1]. Despite the structural trend of the high-temperature phases of all alkaline carbonates is well understood [2], almost nothing is known about high-pressure behavior of these compounds. In...
Dr
Konstantin Podurets
(NRC "Kurchatov Institute")
06/07/2016, 16:00
X-ray structural analysis
Oral
In an imaging experiment using the topography or phase contrast techniques, generally, the result is a single image, which represents the internal structure of the object. However, identification of the features of the observed structure is a challenge. In these methods, an important parameter is the scattering angle, and methods of using its variation are being actively developed [1,2],...
Dr
Victoria Kurbatkiina
(National University of Science and Technology "MISiS)
06/07/2016, 16:20
X-ray structural analysis
Oral
In this work, ceramic materials based on borides of transition metals were prepared by SHS compaction from the pre-mechanically activated (MA) of the powder mixtures. The use of МА enables SHS process in the low exothermic systems. The role of MA appeared in a simultaneous increase in heat evolution and heat evolution rate of the combustion reaction, a positive influence on the thermodynamics...
