24 Result(s)

Article

Study of Combustion Processes of Energetic Materials by Aerosol and Optical Methods

The dispersed composition and mass concentration of the condensed phase formed during the combustion of high-energy materials, model fuels containing aluminum and boron, were studied at atmospheric pressure an...

A. A. Cheremisin, V. V. Karasev… in Journal of Engineering Physics and Thermop… (2022)

Article

On the Possibility of Observing Stimulated De-Excitation of Nuclear Isomer ^186mRe in a High-Current Z-Pinch Plasma at the ANGARA-5-1 Setup

In this paper, we consider an experimental procedure for searching for the stimulation of de-excitation of nuclear isomer (SDNI) of ^186mRe (the isomer spontaneous half-life is T_1/2 = 2 × 10⁵ yr) in a high-current...

G. S. Volkov, E. V. Grabovski, A. N. Gritsuk, V.V. Karasev… in Physics of Atomic Nuclei (2022)

Article

Search for De-excitation of the ^186mRe and ^110mAg Nuclear Isomers in Plasma of High-Power Picosecond Laser Pulse

The possibility of observing the stimulated de-excitation of nuclear isomers (SDENI) in plasma (plasma lifetime ∼1.5 ps, temperature of electrons ∼ 10 keV) formed by the impact of a high-power laser pulse (∼10¹⁸ ...

V. G. Borodin, V. V. Vatulin, N. V. Zhidkov, I. P. Elin… in Physics of Atomic Nuclei (2019)

Article

Search for a New Isomeric State in the ¹⁸⁶Re Nucleus

An experimental search for a new low-energy isomer in the ¹⁸⁶Re nucleus was carried out. The existence of such an isomer was recently proposed to explain the results from experiments on the stimulated de-excitati...

V. V. Karasev, V. V. Koltsov… in Bulletin of the Russian Academy of Science… (2018)

Article

Searching for stimulated de-excitation of the ^186mRe nuclei isomeric state in ISKRA-5 laser plasma

Several targets containing ^186mRe isomeric nuclei are irradiated by laser pulses with an energy of 300 J and a duration of 0.3 ns at the ISKRA-5 facility. The results from measuring the γ-spectra of irradiated sa...

V. V. Vatulin, N. V. Jidkov… in Bulletin of the Russian Academy of Science… (2017)

Article

Scheme of the β-decay of ²³⁴Th

The scheme of the β-decay of ²³⁴Th is still not completely clear. Only the upper bound (10 keV) of the energy of the isomeric transition from level T _1/2 = 1.17 min of the ²³⁴Pa nu...

A. A. Rimskii-Korsakov, V. V. Koltsov… in Bulletin of the Russian Academy of Science… (2016)

Article

Influence of a metallic matrix on the probability of the transition of 910 eV in ¹⁵⁴Eu nuclei

The transition of 910 eV in the ¹⁵⁴Eu nucleus is presented as a new object of study of the influence of a matrix on the probability of low-energy nuclear transitions. The variation of this transition probability ...

V. V. Koltsov, A. A. Rimskii-Korsakov… in Bulletin of the Russian Academy of Science… (2016)

Article

Study of sulfur heterogeneous nucleation from supersaturated vapor on tungsten oxide and sodium chloride seed particles. Determination of contact angle of critical sulfur nuclei

A procedure has been developed for determining the contact angle of a critical nucleus formed on seed particles during the heterogeneous nucleation of a vapor in a flow chamber. The procedure comprises the det...

S. V. Valiulin, S. V. Vosel’, V. V. Karasev, A. A. Onischuk… in Colloid Journal (2014)

Article

A study of homogeneous nucleation of ibuprofen in a flow chamber. Determination of the surface tension of critical nuclei

Homogeneous nucleation of ibuprofen vapor is studied in a nucleation flow chamber, a horizontal quartz tube equipped with an external heater. The area of the chamber where the nucleation proceeds most efficien...

A. V. Samodurov, S. V. Vosel’, A. M. Baklanov, A. A. Onishchuk… in Colloid Journal (2013)

Article

A study of sulfur homogeneous nucleation from supersaturated vapor. Determination of surface tension of sulfur nanoparticles

Homogeneous nucleation in sulfur vapor is studied in a laminar-flow chamber. Concentration and size distribution of resulting aerosol particles are measured with a diffusion spectrometer of aerosols and a PK.G...

S. V. Valiulin, V. V. Karasev, S. V. Vosel’, A. A. Onischuk in Colloid Journal (2013)

Article

An experimental method for studying the heterogeneous nucleation in a laminar flow chamber

We developed a method for studying heterogeneous nucleation in a laminar flow chamber, which allows one to determine the relationship between the main parameters of the process, i.e., the critical size of a se...

S. V. Valiulin, V. V. Karasev, A. Yu. Komarovskikh… in Atmospheric and Oceanic Optics (2012)

Article

A method of determination of critical nucleus parameters in heterogeneous nucleation of supersaturated vapor in a continuous-flow chamber

S. V. Valiulin, V. V. Karasev, S. V. Vosel’, A. A. Onishchuk… in Doklady Physical Chemistry (2012)

Article

Effect of the metal matrix on the probability of the low-energy transition in ²³⁴Pa nuclei

The yields of γ-quanta with the energy of 73.9 keV, emitted by ²³⁴Pa nuclei produced by the β-decay of ²³⁴Th in uranium metal and uranyl nitrate matrices, differ by 26 ± 8%, which suggests the corresponding diffe...

A. A. Rimskii-Korsakov, V. V. Kol’tsov, V. V. Karasev in Radiochemistry (2011)

Article

Homogeneous nucleation from a supersaturated sulfur vapor in a laminar flow diffusion chamber

S. V. Valiulin, V. V. Karasev, A. A. Onishchuk, S. V. Vosel’… in Doklady Physical Chemistry (2011)

Article

Production of nanoaerosols of sparingly water-soluble drugs: The effect of indomethacin nanoparticles

A. A. Onishchuk, T. G. Tolstikova, I. V. Sorokina… in Doklady Biochemistry and Biophysics (2009)

Article

Size and morphology of the nanooxide aerosol generated by combustion of an aluminum droplet

O. G. Glotov, A. A. Onischuk, V. V. Karasev, V. E. Zarko… in Doklady Physical Chemistry (2007)

Article

Formation of metal oxide nanoparticles in combustion of titanium and aluminum droplets

A study was performed of the formation of metal oxide nanoparticles during combustion of aluminum and titanium drops which moved in air at a velocity of up to 3 m/sec. The source of the burning particles was a...

V. V. Karasev, A. A. Onishchuk, S. A. Khromova… in Combustion, Explosion and Shock Waves (2006)

Article

Macrokinetics of Combustion of Monodisperse Agglomerates in the Flame of a Model Solid Propellant

The paper describes a procedure for studying the macrokinetics of combustion of agglomerates in a solid propellant flame using special samples of a model propellant generating monodisperse agglomerates. Empiri...

O. G. Glotov, V. E. Zarko, V. V. Karasev… in Combustion, Explosion and Shock Waves (2003)

Article

A Magnetic Focusing Device

A solenoid is described that provides a 0.26-T field at its center at a power input of 10 kW. The length of the solenoid is 750 mm, and its inner radius is 61.5 mm. The solenoid is intended for electron beam f...

V. V. Karasev, S. I. Gusev, L. V. Kozlov… in Instruments and Experimental Techniques (2003)

Article

Identification of the Logical-and-Probabilistic Risk Models of Structurally Complex Systems with Groups of Inconsistent Events

The theory of identification of the logical-and-probabilistic risk models of structurally complex systems with groups of inconsistent events was presented. For the logical-and-probabilistic risk models, their ...

V. V. Karasev, E. D. Solozhentsev in Automation and Remote Control (2002)