BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Synchrotron radiation methods for registration of the ejection of particles from the free surface of shock-loaded metals DTSTART;VALUE=DATE-TIME:20160706T052000Z DTEND;VALUE=DATE-TIME:20160706T054000Z DTSTAMP;VALUE=DATE-TIME:20260419T054227Z UID:indico-contribution-134-1168@indico.inp.nsk.su DESCRIPTION:Speakers: Konstantin Ten (LIH SB RAS)\nWhen a strong shock wav e 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 al so finer particles in such a flow\, but the existing techniques are not ab le to resolve them.\n\nThis report presents the results of experiments usi ng SR from the colliders VEPP-3 and VEPP-4 at BINP. Precision measurement of transmitted SR (of an energy of 2 GeV on VEPP-3) was applied to explora tion of microparticle flows from a free surface of various materials (copp er\, tin\, and tantalum). Mass distributions along microjets originating f rom micron-sized slits were obtained. Dynamic detection of small-angle X-r ay scattering (SAXS) of synchrotron radiation (SR) from the collider VEPP- 4M (energy of 4 GeV) was implemented on the facility SYRAFEEMA (Synchrotro n Radiation Facility for Exploring Energetic Materials). A technique of SA XS measurement on this facility enables detection of nanoparticles ranging in size from 4 to 200 nm. Flows of nanoparticles of about 100 nm in size from a surface of smooth foil (tin and tantalum) affected by compressed HM X were detected for the first time.\n\n**1**. V. A. Ogorodnikov\, A. G. Iv anov\, A. L. Mikhailov\,\, N.I. Kryukov\, A.P. Tolochko\, V.A. Golubev. P article ejection from the shocked free surface of metals and diagnostic me thods for these particles // Combustion\, Explosion and Shock Waves\, 1998 \, v.34\, No 6\, pages 696-700. \n\n**2**. Thibaut De Resseguier\, Didier Loison\, Emilien Lescoute\, Loic Signor\, Andre Dragon. Dynamic Fragmentat ion of Laser Shock-melted metals: Some Experimental Advances. Journal of t he Theoretical and Applied Mechanics\, 2010\, 48\, 4\, pp. 957-972\, Warsa w.\n\nhttps://indico.inp.nsk.su/event/3/contributions/1168/ LOCATION:Budker INP Conference Hall URL:https://indico.inp.nsk.su/event/3/contributions/1168/ END:VEVENT BEGIN:VEVENT SUMMARY:Nanodomain states of strontium ferrites and their structural trans formations DTSTART;VALUE=DATE-TIME:20160706T092000Z DTEND;VALUE=DATE-TIME:20160706T094000Z DTSTAMP;VALUE=DATE-TIME:20260419T054227Z UID:indico-contribution-134-1170@indico.inp.nsk.su DESCRIPTION:Speakers: Uliana Ancharova (ISSCM SB RAS)\nDepending on substi tution degree and external conditions strongly-nonstoichiometric strontium ferrites have certain features of the local structure [1-3]. It is relate d to extremely high amount of oxygen vacancies\, laying beyond the homogen eity region of perovskite or any of vacancy-ordered phases. That vacancy c oncentration tend to be adopted by the structure through formation of loca l ordering of the vacancies and phase separation with forming nano-heterog eneous structures inside the perovskite matrix. Ion-transport functional p roperties of nano-heterogeneous materials are primarily related to their l ocal structure\, which differ from the structure averaged over the entire crystal.\n\n*In situ* XRD experiments show the transformation of the struc ture under low oxygen partial pressure at different temperatures (up to 90 0ºC). Phase composition and structure parameters are in strong correlatio n to equilibrium oxygen content at different environment conditions.\n\nX- ray diffraction experiments were carried out with involvement of equipment belonging to the shared research center SSTRC\, BINP SB RAS.\n\n[1] U.V. Ancharova\, Domain structure investigation of strontium ferrites/cobaltite s // Powder Diffraction Journal - 2013. - 28. - S2. - P.S51-S64.\n\n[2] U. V. Ancharova\, S.V. Cherepanova\, Nano-domain states of strontium ferrites SrFe1−yMyO2.5+x (M=V\, Mo\; y≤0.1\; x≤0.2) // Journal of Solid Stat e Chemistry\, - 2015. - V.225. - P.410-416.\n\n[3] У.В. Анчарова \, С.В. Черепанова\, С.А. Петров\, Способы ад аптации высокой концентрации кислородн ых вакансий в нестехиометрических ферри тах стронция // Журнал Структурной Химии\ , - 2016. - in press.\n\nhttps://indico.inp.nsk.su/event/3/contributions/1 170/ LOCATION:Budker INP Conference Hall URL:https://indico.inp.nsk.su/event/3/contributions/1170/ END:VEVENT BEGIN:VEVENT SUMMARY:The high-pressure diffraction studies of potassium and complex car bonates: structural trends and stability DTSTART;VALUE=DATE-TIME:20160706T094000Z DTEND;VALUE=DATE-TIME:20160706T100000Z DTSTAMP;VALUE=DATE-TIME:20260419T054227Z UID:indico-contribution-134-1189@indico.inp.nsk.su DESCRIPTION:Speakers: Sergey Rashchenko (Institute of geology and mineralo gy SD RAS)\nThe interest to carbonates is determined by their obvious prac tical importance\, as well as their abundance in the Earth’s interior an d a key role in magma generation\, plume upwelling and diamond growth [1]. Despite the structural trend of the high-temperature phases of all alkali ne carbonates is well understood [2]\, almost nothing is known about high- pressure behavior of these compounds. In this work we use a combination of the high-pressure diffraction experiments in diamond anvil cell (4th beam line of the VEPP-3 storage ring of the SSTRC\, Novosibirsk) and ab-initio calculations to determine the crystal structure of the high-pressure phase of K2CO3 at 3.1 GPa. \nAmong the structures founded in our calculations\, the Р21/с-structure shows relevant matching with the experimental patte rn (Fig. 1). The comparison with the experimental data on Li2CO3 allows to reconstruct the common structural trend\, which is consistent with the si mple rule that the structure of the high-pressure polymorph is the same as the ambient structure of a heavier element compound from the same group o f the periodic table.\nWe also report on the compressibility and structure behaviour of thaumasite Ca3Si(OH)6(CO3)(SO4)•12Н2О\, a unique known m ineral that possesses Si coordinated by six hydroxyl groups and stable at ambient P/Tconditions [3]. Our data show a strong dependence of its high-p ressure stability limit on the nature of compressing medium.\nThis work is supported by the Russian Foundation for Basic Research (grant No 15-55-45 070) and the Ministry of Education and Science of Russian Federation (# 14 .B25.31.0032).\n\nReferences\n[1] Litasov K.D. (2011) Russian Geology and Geophysics 52\, 475-492.\n[2] Swainson I.P. et al. (1995) J. Phys.-Condens . Mat. 7\, 4395-4417.\n[3] Gatta G.D. et al.(2012) American Mineralogist\, 97\,1060-1069.\n\nhttps://indico.inp.nsk.su/event/3/contributions/1189/ LOCATION:Budker INP Conference Hall URL:https://indico.inp.nsk.su/event/3/contributions/1189/ END:VEVENT BEGIN:VEVENT SUMMARY:In situ diffraction experiments at VEPP-3 beamlines #2 and #6. DTSTART;VALUE=DATE-TIME:20160706T090000Z DTEND;VALUE=DATE-TIME:20160706T092000Z DTSTAMP;VALUE=DATE-TIME:20260419T054227Z UID:indico-contribution-134-1195@indico.inp.nsk.su DESCRIPTION:Speakers: Alexander Shmakov (Boreskov Institute of Catalysis S D RAS)\nIn situ diffraction experiments at VEPP-3 beamlines #2 and #6.\n\n https://indico.inp.nsk.su/event/3/contributions/1195/ LOCATION:Budker INP Conference Hall URL:https://indico.inp.nsk.su/event/3/contributions/1195/ END:VEVENT BEGIN:VEVENT SUMMARY:Investigation of influence NH4VO3+HOCH2CH2OH oxidation of ASD-4 po wder DTSTART;VALUE=DATE-TIME:20160706T082000Z DTEND;VALUE=DATE-TIME:20160706T084000Z DTSTAMP;VALUE=DATE-TIME:20260419T054227Z UID:indico-contribution-134-1214@indico.inp.nsk.su DESCRIPTION:Speakers: Danil Eselevich (ISSC UB RAS)\nTo improve the charac teristics of rocket propellants\, high-energy metal powders are used. Alum inum powders are most widely employed metallic combustibles. However\, the presence of an oxide film on the surface of particles is a grave disadvan tage\, which does not allow using their energy potential in full.\nThis wo rk presents results of a study of the oxidation process of Al powder modif ied ammonia metavanadate and ethylene glycol. The specific surface of Al p owder was 0.4 m2/g\; active metal - 98.7%\; vanadium content - 0.5-0.8%.\n Carried out a comprehensive study of the modified aluminum powder oxidatio n by methods TG\, DSC\, X-ray diffraction using a synchrotron radiation so urce. The study was conducted in air at a heating rate of 10 deg./min. to 1250 0C. It has been found that the impregnation of micro-powder ASD-4 acc elerates it’s oxidation under heat and shifts the process to the low tem perature zone\, compared with the initial powder Al. Showed the features o f oxidation by the formation of intermediate phases of vanadium oxide at l ow temperatures. The two modifiers have been compared: NH4VO3 + HOCH2CH2OH and studied previously V2O5 ∙ nH2O. The latter has the advantage of the completeness of the final conversion\, but for the more active powders is preferable to use ethylene glycol.\n\nhttps://indico.inp.nsk.su/event/3/c ontributions/1214/ LOCATION:Budker INP Conference Hall URL:https://indico.inp.nsk.su/event/3/contributions/1214/ END:VEVENT BEGIN:VEVENT SUMMARY:Status of dynamic diagnostics of plasma material interaction based on synchrotron radiation scattering at the VEPP-4 beamline 8 DTSTART;VALUE=DATE-TIME:20160706T070000Z DTEND;VALUE=DATE-TIME:20160706T074000Z DTSTAMP;VALUE=DATE-TIME:20260419T054227Z UID:indico-contribution-134-1226@indico.inp.nsk.su DESCRIPTION:Speakers: Aleksey Arakcheev (Budker INP)\nThe residual mechani cal deformation and stress were measured in the preliminary experiments ca rried out at synchrotron radiation (SR) scattering stations at VEPP-3 in t he Siberian Center of Synchrotron and Terahertz Radiation (“Precision di ffractometry and anomalous scattering”\, “Diffractometry in hard X-ray s”). The deformation and stress were calculated on the basis of the depe ndence of the scattering angle on the inclination of the irradiated tungst en sample. Significant changes in the SR diffraction are found as the resu lt of material recrystallization or irradiation of the material by plasma. It implies that the SR scattering diagnostics may be an informative instr ument for in-situ observations of the state of the plasma facing component s.\n\n\n\nThe next stage of the SR scattering diagnostics development at t he VEPP-4 beamline 8 is the dynamic measurements during pulsed heat loads. Currently a 1J Nd:YAG laser is used for the 0.2ms heat load simulation an d a 100J laser is under development. The parameters of the heating are suf ficient for simulation of the expected pulsed heat load in ITER. The destr uctive effect of pulsed heat loads is caused by mechanical stresses that o ccurs in highly non-uniformly heated materials. The main aim of the curren t development of diagnostics based on SR scattering is the dynamic measure ments of the mechanical deformation and stress dependences on the depth be low the surface. It looks like the rotation of crystallographic planes due to mechanical deformations is the dominant effect in the SR scattering. S o the deformation and stress distributions may be calculated using measure ments of the diffraction peak parameters of SR passed through the sample. The set of requirements (the pass through material\, dynamical measurement s of pulsed processes) determines restrictions on SR brightness and energy . The SR from VEPP-4 with energy 69keV will be used for experiments with t ungsten. Also a single crystal samples are necessary for increasing of the diffraction peak brightness. Currently\, the one-dimensional gas X-ray de tector DIMEX is used for measurements. The development of the silicon dete ctor for increasing of the sensitivity is in progress.\n\n\nThe first dyna mical measurements of the diffraction peak of SR passed through the 250µm thick single crystal tungsten were carried using the one-dimensional dete ctor. The inclination of the sample to the initial SR beam was about 45° in order to result in the diffraction peak shift. The change of the SR sca ttering angle about 0.1° during the laser irradiation and the subsequent fast return during the comparable time were found out. The behavior could be explained by the bending of the initially plane sample. The bending mom ent is proportional to the difference of the temperature at the heated and opposite sides. The moment disappears while the temperature distribution flattens across the thin sample. Conversely the temperature propagation al ong the sample surface takes more time. Thus the expected effect of the cr ystal planes rotation could be estimated as the diffraction peak shift aft er the temperature flattening across the sample. The measured shift was ab out 0.03°. The measurements of deformation and stress distributions acros s the sample requires the analysis of the diffraction peak shape during th e laser irradiation.\n\nhttps://indico.inp.nsk.su/event/3/contributions/12 26/ LOCATION:Budker INP Conference Hall URL:https://indico.inp.nsk.su/event/3/contributions/1226/ END:VEVENT BEGIN:VEVENT SUMMARY:Hydrostatic and shock-wave compression of a molecular crystals DTSTART;VALUE=DATE-TIME:20160706T042000Z DTEND;VALUE=DATE-TIME:20160706T050000Z DTSTAMP;VALUE=DATE-TIME:20260419T054227Z UID:indico-contribution-134-1249@indico.inp.nsk.su DESCRIPTION:Speakers: Ewgeny Smirnov (РRFNC-FNIITF\, Snezhinsk\, Russia)\ nThe report presents analysis of experimental data on hydrostatic and shoc k-wave compression of energy-saturated material. The semi-empirical Mie-Gr uneisen 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 this data is obtained using the powder diffract ion method. The Hugoniot curve expression plausibly describes shock-compre ssion data on the studied material having various initial porosities.\n\nh ttps://indico.inp.nsk.su/event/3/contributions/1249/ LOCATION:Budker INP Conference Hall URL:https://indico.inp.nsk.su/event/3/contributions/1249/ END:VEVENT BEGIN:VEVENT SUMMARY:Methods of angular scanning in imaging and topography DTSTART;VALUE=DATE-TIME:20160706T100000Z DTEND;VALUE=DATE-TIME:20160706T102000Z DTSTAMP;VALUE=DATE-TIME:20260419T054227Z UID:indico-contribution-134-1278@indico.inp.nsk.su DESCRIPTION:Speakers: Konstantin Podurets (NRC "Kurchatov Institute")\nIn an imaging experiment using the topography or phase contrast techniques\, generally\, the result is a single image\, which represents the internal s tructure of the object. However\, identification of the features of the ob served structure is a challenge. In these methods\, an important parameter is the scattering angle\, and methods of using its variation are being ac tively developed [1\,2]\, making possible to obtain a scattering curve for each local region of a sample. The report discusses the results of applyi ng the methods of the angular scanning experiments in the synchrotron topo graphy and analyzer based imaging. The curved silicon single crystals are currently used at the big accelerators (LHC etc) as deflectors for the ext raction and collimation of the proton beams. Using the method of topograph y with angular scanning at synchrotron radiation such a deflector was stud ied\, the curvature of its elements was measured and its performance at th e passage of the proton beam was understood. A wide range of objects was s tudied with the help of analyzer based imaging with angular scanning. Seve ral samples of opals of natural and artificial origin were investigated. I mages of all the samples were obtained in a wide angular range from the pe ak of crystal reflection to the distant tail at about 102 of FWHM. The maj ority of the samples displayed the inhomogeneous structure with regions th at changed their brightness\, relative to adjacent regions\, during the ro tation of the analyzer crystal. Another kind of a sample was an ancient pa rchment\, where the features of its structure on tens micrometers scale ca n provide a valuable information of the parchment manufacturing technology .\n\n1. A. A. Kaloyan\, E. S. Kovalenko\, and K. M. Podurets\, Journal of Surface Investigation. X-ray\, Synchrotron and Neutron Techniques\, 2014\, Vol. 8\, No. 3\, pp. 429–432.\n2. Lübbert D.\, Baumbach T.\, Härtwig J.\, Boller E.\, Pernot E. Nucl. Instrum. Meth. 2000 B160 521\n\nhttps://i ndico.inp.nsk.su/event/3/contributions/1278/ LOCATION:Budker INP Conference Hall URL:https://indico.inp.nsk.su/event/3/contributions/1278/ END:VEVENT BEGIN:VEVENT SUMMARY:Zero-area THz optical pulses in gases. DTSTART;VALUE=DATE-TIME:20160706T080000Z DTEND;VALUE=DATE-TIME:20160706T082000Z DTSTAMP;VALUE=DATE-TIME:20260419T054227Z UID:indico-contribution-134-1279@indico.inp.nsk.su DESCRIPTION:Speakers: Evgeniy Chesnokov (Istitute of Chemical Kinetics)\nT ransformation 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 oscillati ons were observed experimentally in rotation spectra of HCN and HBr molecu les using a terahertz free electron laser as a source of optical pulses an d ultra-fast Schottky diode as detector.\n\nhttps://indico.inp.nsk.su/even t/3/contributions/1279/ LOCATION:Budker INP Conference Hall URL:https://indico.inp.nsk.su/event/3/contributions/1279/ END:VEVENT BEGIN:VEVENT SUMMARY:Novel technique for spatially resolved imaging of molecular bond o rientations using X-ray birefringence: applications and developments DTSTART;VALUE=DATE-TIME:20160706T054000Z DTEND;VALUE=DATE-TIME:20160706T060000Z DTSTAMP;VALUE=DATE-TIME:20260419T054227Z UID:indico-contribution-134-1289@indico.inp.nsk.su DESCRIPTION:Speakers: Igor Dolbnya (Diamond Light Source)\nBirefringence h as 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 techniqu e has been successfully applied for the first time [1] at the Diamond Ligh t Source versatile Test Beamline B16. The orientational order of C–Br bo nds of brominated “guest” molecules within crystalline “host” tunn el structures (thiourea or urea inclusion compounds) has been studied usin g linearly polarized incident X-rays close to the Br K-edge. Imaging of do main structures [1]\, changes in C–Br bond orientations associated with order-disorder phase transitions [1]\, and the effects of dynamic averagin g of C–Br bond orientations [2] have been demonstrated. The setup uses a vertically deflecting high-resolution double-crystal monochromator upstre am from the sample and a horizontally deflecting single-crystal polarizati on analyser downstream with a Bragg angle as close as possible to 45°. In this way\, the rotation angle of the polarization of the beam transmitted through the sample is measured as in polarizing optical microscopy. The t heoretical instrumental background is calculated and compared with experim ental observations. The summary of recent results and some perspective dev elopments are presented and discussed.\n\nReferences: \n\n[1] Palmer\, B. A.\, Edwards-Gau\, G. R.\, Kariuki\, B. M.\, Harris\, K. D. M.\, Dolbnya\, I. P. and Collins\, S. P. (2014) Science 344\, 1013-1016.\n\n[2] Palmer\, B. A.\, Edwards-Gau\, G. R.\, Kariuki\, B. M.\, Harris\, K. D. M.\, Dolbn ya\, I. P.\, Collins\, S. P. and Sutter\, J. P. (2015) J. Phys. Chem. Lett 6\, 561-567.\n\nhttps://indico.inp.nsk.su/event/3/contributions/1289/ LOCATION:Budker INP Conference Hall URL:https://indico.inp.nsk.su/event/3/contributions/1289/ END:VEVENT BEGIN:VEVENT SUMMARY:The study of the phase composition of ceramic materials obtained b y SHS from previously mechanically activated reaction mixtures Ti-Cr-B DTSTART;VALUE=DATE-TIME:20160706T102000Z DTEND;VALUE=DATE-TIME:20160706T104000Z DTSTAMP;VALUE=DATE-TIME:20260419T054227Z UID:indico-contribution-134-1291@indico.inp.nsk.su DESCRIPTION:Speakers: Victoria Kurbatkiina (National University of Science and Technology "MISiS)\nIn this work\, ceramic materials based on borides of transition metals were prepared by SHS compaction from the pre-mechani cally activated (MA) of the powder mixtures. The use of МА enables SHS p rocess in the low exothermic systems. The role of MA appeared in a simulta neous increase in heat evolution and heat evolution rate of the combustion reaction\, a positive influence on the thermodynamics and kinetics of the process.\nKinetics of the SHS process\, stages of chemical transformation s and structure formation in theTi Cr--B system were investigated. It is demonstrated that the interaction of the reagents on the solid phase mecha nism takes place at a temperature of the combustion. \nMA was found to mar kedly affect the combustion temperature and burning velocity of Ti–Cr– B blends. SHS reactions in Ti–Cr–B blends with Cr contents above 10% p roceeded with involvement of gas transport agents. The role of gas transpo rt was found to grow with increasing MA duration\, due to an increase in t he amount of boron oxides.\nThe mechanisms of combustion and structure for mation in Ti-Cr-B were well characterized using different method such as stop combustion front\, SEM\, EDS\, X-ray photoelectron spectroscopy\, XR D including the use of synchrotron radiation. \nResults\, the main reactio n is the formation of the titanium borides. Then\, the complex borides ar e formed in the post combustion zone and the secondary structure formation zone. Ternary phases Cr4Ti9B and Ti2CrB2 were detected. Сr4Ti9B phase is formed at a chromium content of up to 20%\, second boride (Ti2CrB2) is fo rmed with increasing chromium concentrations up to 30%.\nIt is found that they are chemical compounds - borides hexagonal lattice (structural types hP28 / 5 and tP10 / 2).\nThe technology of compact samples of pre-activate d mixture Ti-Cr-B and their properties were studied.\n\nhttps://indico.inp .nsk.su/event/3/contributions/1291/ LOCATION:Budker INP Conference Hall URL:https://indico.inp.nsk.su/event/3/contributions/1291/ END:VEVENT BEGIN:VEVENT SUMMARY:Upgrade of the detector for imaging of explosions. DTSTART;VALUE=DATE-TIME:20160706T050000Z DTEND;VALUE=DATE-TIME:20160706T052000Z DTSTAMP;VALUE=DATE-TIME:20260419T054227Z UID:indico-contribution-134-1318@indico.inp.nsk.su DESCRIPTION:Speakers: Lev Shekhtman (Budker Institute of Nuclear Physics)\ nMethods of dynamic imaging of explosions at a synchrotron radiation (SR) beam and small-angle X-ray scattering experiments with exploding samples a re 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 purpose s and successfully operating at the beam line 0 at the VEPP-3 storage ring and at the beam line 8 at the VEPP-4M storage ring. The DIMEX is based on gas technology and allow to measure SR flux as a function of position and time with spatial resolution of $\\sim$200 $\\mu$m (FWHM)\, maximum frame rate of 2 MHz and time resolution of $\\sim$80 ns. Maximum value of the SR flux that can be measured by the present detector corresponds to $\\sim $5000 photons/(channel*bunch) (20 keV average energy\, channel area 0.1x0. 5 mm$^2$\, bunch revolution frequency 4 MHz). Maximum number of frames th at can be stored in the present detector is 32 and the number of channels with 0.1 mm width is 512. \n\nIn order to significantly improve the preci sion of data obtained by the DIMEX an upgrade of the detector has been sta rted. The electronics of the gaseous version of the detector has been chan ged such that the new detector is able to operate with frame rate of 8 MHz and store data in up to 100 frames. A new ASIC was developed for this pur pose called DMXG64A that includes 64 channels with low noise integrator an d 100 analogue memory cells in each channel. Input charge can be stored to and read out from analogue cells with maximum frequency of 10 MHz. The ot her parameters such as maximum measured SR flux\, spatial and time resolut ions are stay the same as in the old DIMEX. This new version of the detect or is called the DIMEX-G and is planned to be used at the VEPP-3 storage r ing and for SAXS studies at the VEPP-4M storage ring.\n\nFor imaging of ex plosions at the beam line 8 at the VEPP-4M storage ring\, where SR flux is expected to be about 100 times higher than at the VEPP-3\, a new detector based on Si micro-strip technology is being developed. Si micro-strip sen sors with special design in order to be able to measure very high X-ray fl ux\, are manufactured for us by Hamamatsu Photonics company. Each sensor c ontains 1024 30mm long strips with 50 $\\mu$m pitch. The sensor thickness is 300 $\\mu$m and it will be positioned at an angle of 1.7 degrees with r espect to the SR beam plane in order to get effective Si thickness along t he beam close to 10 mm. The new detector called DIMEX-Si will have spatial resolution of 50 $\\mu$m (FWHM) and time resolution close to 10 ns. The n ew ASIC is under development for this project that will allow to operate w ith the frame rate of 50 MHz and record maximum charge that corresponds to the flux close to 10$^6$ photons/(chan*bunch)\, i.e. about 100 times high er than with present detector.\n\nhttps://indico.inp.nsk.su/event/3/contri butions/1318/ LOCATION:Budker INP Conference Hall URL:https://indico.inp.nsk.su/event/3/contributions/1318/ END:VEVENT BEGIN:VEVENT SUMMARY:Structural phase transformations study of brittle refractory metal s and intermetallics with L12 structure using synchrotron radiation DTSTART;VALUE=DATE-TIME:20160706T074000Z DTEND;VALUE=DATE-TIME:20160706T080000Z DTSTAMP;VALUE=DATE-TIME:20260419T054227Z UID:indico-contribution-134-1323@indico.inp.nsk.su DESCRIPTION:Speakers: Vitaliy Pilyugin (M.N. Mikheev Institute of Metal Ph ysics of the Ural Branch of the Russian Academy of Sciences (IMP UB RAS))\ nAfter severe plastic deformation under the high pressure torsion techniqu e a number of brittle refractory metals such as Mo\, W\, Re and Ni3Ge inte rmetallic compound with L12\nstructure have been investigated. These studi es are of great interest\, since the effects of shear deformation under hi gh pressure have not been previously studied on these materials. In all ca ses the grain refinement caused by dislocations mobility has been observed . The Ni3Ge demonstrates the decrease of the degree of the long-range orde r after large plastic strain. Synchrotron radiation source has been used i n order to determine the level of internal stresses\, crystallite size and other parameters of the plastically deformed materials. The models of the influence of the mobility of dislocations to crystallite size and fractur e surfaces have been considered.\n\n*The reported study was partially fund ed by RFBR according to the research project No. 16-03-00182-а and was ca rried out within state assignment of FASO of Russia (theme “Deformation ” No. 01201463327)*\n\nhttps://indico.inp.nsk.su/event/3/contributions/1 323/ LOCATION:Budker INP Conference Hall URL:https://indico.inp.nsk.su/event/3/contributions/1323/ END:VEVENT END:VCALENDAR