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Article
Shock-Wave Transformations of Fine-Grained Quartz Dispersed in a Silver Matrix
Samples with porosities of 2–3 and 13% consisting of fine-grained quartz dispersed in a silver matrix were subjected to shock compression up to 28, 33, and 37 GPa in planar recovery ampoules. In samples with a...
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Article
Open AccessAuthor Correction: Ultra-high-resolution observations of persistent null-point reconnection in the solar corona
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Article
Open AccessUltra-high-resolution observations of persistent null-point reconnection in the solar corona
Magnetic reconnection is a key mechanism involved in solar eruptions and is also a prime possibility to heat the low corona to millions of degrees. Here, we present ultra-high-resolution extreme ultraviolet ob...
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Article
The Eruption of 22 April 2021 as Observed by Solar Orbiter: Continuous Magnetic Reconnection and Heating After the Impulsive Phase
We report on one of the first solar-eruptive events that was simultaneously observed by three of the remote-sensing instruments onboard Solar Orbiter during the cruise phase. The Extreme Ultraviolet Imager (EU...
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Article
Dynamic Yield Strength and Spall Strength of Polycrystalline Nickel Aluminide
This study reports the results of experimental research on the dynamic yield strength and spall strength of polycrystalline NiAl under shock-wave loading. Wave profiles obtained by laser interferometry are pre...
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Article
Electrosurface Properties of Detonation Nanodiamond Hydrosols as Depending on the Size of Dispersed Particles
The electrosurface properties have been experimentally studied for different monodisperse fractions of hydrosol particles of detonation nanodiamond (DND) obtained by air annealing of particle agglomerates, the...
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Article
Sound Velocity in Shock-Compressed Samples from a Mixture of Micro- and Nanodispersed Nickel and Aluminum Powders
Sound velocity variation behind a shock wave front is measured in pressed samples of micro- and nanodispersed mixtures of nickel and aluminum powders at pressures of 10, 30, and 60 GPa in order to verify the p...
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Article
Shock Compressibility of Mixtures of Micro- and Nano-Sized Nickel and Aluminum Powders
Shock compressibility of porous samples prepared from mixtures of micro- and nanosized nickel and aluminum powders is experimentally studied in the pressure range up to 60 GPa. Shock wave profiles in the sampl...
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Article
Single ICMEs and Complex Transient Structures in the Solar Wind in 2010 – 2011
We analyze the statistics, solar sources, and properties of interplanetary coronal mass ejections (ICMEs) in the solar wind. The total number of coronal mass ejections (CMEs) registered in the Coordinated Data...
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Article
Detection of Quasi-Periodic Pulsations in Solar EUV Time Series
Quasi-periodic pulsations (QPPs) are intrinsically connected to the mechanism of solar flares. They are regularly observed in the impulsive phase of flares since the 1970s. In the past years, the studies of QP...
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Article
Visibility of Prominences Using the He i D3 Line Filter on the PROBA-3/ASPIICS Coronagraph
We determine the optimal width and shape of the narrow-band filter centered on the He i D3 line for prominence and coronal mass ejection (CME) observations with the ASPIICS (Association of Spacecraft for Polarime...
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Article
Investigation of Nickel Aluminide Formed Due to Shock Loading of Aluminum–Nickel Mixtures in Flat Recovery Ampoules
Detailed results of an x-ray diffraction analysis of equimolar mixtures of nickel and aluminum with different particle sizes before and after shock loading in flat recovery ampoules are reported.
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Article
Nafion- and aquivion-based nanocomposites containing detonation nanodiamonds
Nafion- and Aquivion-based composite solid polyelectrolytes containing deagglomerated detonation nanodiamonds were studied by the impedance spectroscopy method. It was found that introduction of these dopants ...
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Article
The effect of simple electrolytes on coagulation of hydrosols of monodisperse negatively charged detonation nanodiamond
The influence of the concentration of potassium and barium chlorides on the aggregation stability of a hydrosol of monodisperse negatively charged detonation nanodiamond with particle sizes of 4−5 nm obtained ...
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Article
Synthesis and study of aggregative stability of Fe3O4@SiO2 core-shell nanoparticles in aqueous solutions
Conditions for the preparation of Fe3O4@SiO2 core-shell nanoparticles aggregatively stable in aqueous solutions were determined.
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Article
Increase in the Reliability and Durability of Metal Impulse Seals. Part 3*
A new method is proposed for preparing metal pulse end seals improving their reliability and durability due to increasing the wear resistance of ring working end surfaces and contact surfaces of the secondary ...
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Article
Influence of the decomposition of particle units on the coagulation kinetics of monodisperse silicon sol
Based on the results of studying the coagulation kinetics of monodisperse sol of SiO2 in NaCl solutions at various pH values, it is shown that the coagulation rate, flowing in the far potential minimum while main...
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Article
Increase in the Reliability and Durability of Metal Impulse Seals. Part 2*
A new method is proposed for improving the reliability and durability of metal impulse seals due to an increase in wear resistance of ring end surfaces and also tongue and bush surfaces by electroerosion treat...
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Article
Counterion condensation in hydrosols of single-crystalline detonation nanodiamond particles obtained by air annealing of their agglomerates
The pattern of previously recorded dependences of the specific surface charge and electrophoretic mobility of monodisperse detonation nanodiamond particles on pH of aqueous KCl solutions suggests that counteri...
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Article
Increase in the Reliability and Durability of Metal Impulse End Seals. Part 1
A new method is proposed for improving the reliability and durability of metal impulse seals due to an increase in wear resistance of ring end surfaces by applying a multilayer coating by electroerosion alloying.
