Mednikov A.M., Abrosimov I.N., Saatov E.A., Petukhov M.V. «Acoustooptical modulator of light polarization» Приборы и техника эксперимента, 34, № 2, с. 0 (1991)

The modulator was described applied to polarization measurements. The modulator was made of melted quartz resonating at the frequencies from 55 up to 60 kHz, the resonance quality factor was of 10³–10⁴. The oscillations were excited by piezoceramic components master oscillator supplied. The modulation amplitude was controlled by analogous signal or digital code. The light beam diameter did not exceed 10 mm.

Alshuaili I.Y.K., Issa Salim Aal Alshaikh, Albusaidi Q., Akindi A. «Aurora in Oman: observations and images» Солнечно-земная физика, 11, № 1, с. 109-112 (2025)

The Sun showed extraordinary activity related to sunspot area 3664 on May 8–10, 2024, resulting in solar flares considered the most intense in the current solar cycle. Auroras occurred in several regions around the world. Early on May 12, 2024 near the highest peak in the Sultanate of Oman, a team of Omani astrophotography enthusiasts documented the rare event ever observed in this region. Auroras often occur along the so-called auroral oval zones around the geomagnetic poles, where Earth's magnetic field directs charged particles penetrating from the solar wind. This takes place when a cloud of charged particles is thrown toward Earth by a large explosion on the Sun. Sometimes, these particles can make the aurora visible in places where it is exceedingly rare throughout recorded history. The observation from the mountain Jebel Shams, situated far from the polar regions (23 degrees north of the equator), offers a unique chance to study such an event in a region where auroras are exceptionally rare. We explore the factors contributing to the observed aurora in Oman, including geomagnetic conditions and the role of sunspot region AR3664 in solar activity along with local conditions in Oman that contributed to the visibility of this aurora. Understanding this dynamics can enhance our knowledge of the mechanisms driving auroral visibility at lower latitudes and provide valuable insights into the global impact of solar storms. This study also emphasizes how crucial it is to record auroras in regions like the Arabian Peninsula, where they are rarely documented.

Albul V.I., Bychkov V.B., Gusev K.E., Demidov V.S., Demidova E.V., Konovalov S.L., Kurchanov A.F., Luk'yashin V.E., Lyashuk V.I., Novikov E.G., Rostovtsev A.A., Sokolov A.Yu., Feizkhanov U.F., Khaldeeva N.A. «Measurements of the parameters of the acoustic radiation accompanying the moderation of an intense proton beam in water» Приборы и техника эксперимента, 44, № 3, с. 50-57 (2001)

Using the external proton beam of the accelerator at the Institute of Theoretical and Experimental Physics (ITEP), an experiment was performed on recording the acoustic signals accompanying the moderation (up to termination) of an intense proton beam with an energy of up to 200 MeV in water. The signals are damped quasi-periodic oscillations, whose initial period reflects the features of the radiating system. Parameters of the acoustic signal are measured in a wide range of energy release (from 10¹⁶ to 1.2·10¹⁹ eV) for three values of the beam diameter.

Alshuaili I.Y.K., Issa Salim Aal Alshaikh, Albusaidi Q., Akindi A. «Aurora in Oman: observations and images» Солнечно-земная физика, 11, № 1, с. 109-112 (2025)

The Sun showed extraordinary activity related to sunspot area 3664 on May 8–10, 2024, resulting in solar flares considered the most intense in the current solar cycle. Auroras occurred in several regions around the world. Early on May 12, 2024 near the highest peak in the Sultanate of Oman, a team of Omani astrophotography enthusiasts documented the rare event ever observed in this region. Auroras often occur along the so-called auroral oval zones around the geomagnetic poles, where Earth's magnetic field directs charged particles penetrating from the solar wind. This takes place when a cloud of charged particles is thrown toward Earth by a large explosion on the Sun. Sometimes, these particles can make the aurora visible in places where it is exceedingly rare throughout recorded history. The observation from the mountain Jebel Shams, situated far from the polar regions (23 degrees north of the equator), offers a unique chance to study such an event in a region where auroras are exceptionally rare. We explore the factors contributing to the observed aurora in Oman, including geomagnetic conditions and the role of sunspot region AR3664 in solar activity along with local conditions in Oman that contributed to the visibility of this aurora. Understanding this dynamics can enhance our knowledge of the mechanisms driving auroral visibility at lower latitudes and provide valuable insights into the global impact of solar storms. This study also emphasizes how crucial it is to record auroras in regions like the Arabian Peninsula, where they are rarely documented.

Alshuaili I.Y.K., Issa Salim Aal Alshaikh, Albusaidi Q., Akindi A. «Aurora in Oman: observations and images» Солнечно-земная физика, 11, № 1, с. 109-112 (2025)

The Sun showed extraordinary activity related to sunspot area 3664 on May 8–10, 2024, resulting in solar flares considered the most intense in the current solar cycle. Auroras occurred in several regions around the world. Early on May 12, 2024 near the highest peak in the Sultanate of Oman, a team of Omani astrophotography enthusiasts documented the rare event ever observed in this region. Auroras often occur along the so-called auroral oval zones around the geomagnetic poles, where Earth's magnetic field directs charged particles penetrating from the solar wind. This takes place when a cloud of charged particles is thrown toward Earth by a large explosion on the Sun. Sometimes, these particles can make the aurora visible in places where it is exceedingly rare throughout recorded history. The observation from the mountain Jebel Shams, situated far from the polar regions (23 degrees north of the equator), offers a unique chance to study such an event in a region where auroras are exceptionally rare. We explore the factors contributing to the observed aurora in Oman, including geomagnetic conditions and the role of sunspot region AR3664 in solar activity along with local conditions in Oman that contributed to the visibility of this aurora. Understanding this dynamics can enhance our knowledge of the mechanisms driving auroral visibility at lower latitudes and provide valuable insights into the global impact of solar storms. This study also emphasizes how crucial it is to record auroras in regions like the Arabian Peninsula, where they are rarely documented.

Andriyanov Yu.V., Andriyanova O.N., Kozodoj P.V. «An electromagnetic acoustic shock wave generator» Приборы и техника эксперимента, 42, № 2, с. 254-260 (1999)

An electromagnetic acoustic shock wave generator with a parabolic reflector and a band foil inductor as a radiating element inside a metallic cylindrical shell is described. The electromechanical model calculated allows for evaluating the optimal number of turns (layers) of the band coil depending on the geometric parameters of the radiator. A model generator specimen ensured the stepwise variation of the acoustic pulse duration from 1 to 3 μs at a pressure amplitude of ≈100 MPa at the focus. The possibility of generating two successive acoustic pulses of different duration with a controlled time delay between them is considered. The device can be applied in medical facilities for destruction of kidney stones and gallstones, and the high stability of the parameters of acoustic pulses may be of interest in studying the biology of cell cultures (sonoporation), acoustic cavitation, etc.

Andriyanov Yu.V., Andriyanova O.N., Bagaudinov K.G., Garilevich B.A., Maksimov D.V. «Three-beam generator of acoustic shock-wave pulses» Приборы и техника эксперимента, 40, № 2, с. 123-125 (1997)

A three-beam generator of shock-wave acoustic pulses is described. The generator consists of three plane radiators of electromagnetic type with acoustic focusing lenses. The radiators are located on a general base symmetrically relative to the generator axis and so, thus the axes of acoustic lenses intersect in one point being the geometric focus for each lens. Measurement results of the pressure amplitude distribution of a shock-wave acoustic pulse in the zone of three beams intersection are presented. It is shown that the pressure distribution has plateau-like form. The generator is intended for crushing the kidney and bile gall-stones.

Andriyanov Yu.V., Andriyanova O.N., Kozodoj P.V. «An electromagnetic acoustic shock wave generator» Приборы и техника эксперимента, 42, № 2, с. 254-260 (1999)

An electromagnetic acoustic shock wave generator with a parabolic reflector and a band foil inductor as a radiating element inside a metallic cylindrical shell is described. The electromechanical model calculated allows for evaluating the optimal number of turns (layers) of the band coil depending on the geometric parameters of the radiator. A model generator specimen ensured the stepwise variation of the acoustic pulse duration from 1 to 3 μs at a pressure amplitude of ≈100 MPa at the focus. The possibility of generating two successive acoustic pulses of different duration with a controlled time delay between them is considered. The device can be applied in medical facilities for destruction of kidney stones and gallstones, and the high stability of the parameters of acoustic pulses may be of interest in studying the biology of cell cultures (sonoporation), acoustic cavitation, etc.

Andriyanov Yu.V., Andriyanova O.N., Bagaudinov K.G., Garilevich B.A., Maksimov D.V. «Three-beam generator of acoustic shock-wave pulses» Приборы и техника эксперимента, 40, № 2, с. 123-125 (1997)

A three-beam generator of shock-wave acoustic pulses is described. The generator consists of three plane radiators of electromagnetic type with acoustic focusing lenses. The radiators are located on a general base symmetrically relative to the generator axis and so, thus the axes of acoustic lenses intersect in one point being the geometric focus for each lens. Measurement results of the pressure amplitude distribution of a shock-wave acoustic pulse in the zone of three beams intersection are presented. It is shown that the pressure distribution has plateau-like form. The generator is intended for crushing the kidney and bile gall-stones.

Erofeev Vladimir I., Antonov Artem M., Malkhanov Alexey O. «On the velocities of Rayleigh surface waves propagating along boundaries of generalized continua» Журнал Сибирского Федерального университета. Математика и физика, 18, № 2, с. 191-198 (2025)

Показано, что математические модели градиентно-упругой среды и редуцированной среды Коссера, в отличие от модели классического деформируемого твердого тела, позволяют описать наблюдаемую экспериментально дисперсию поверхностной волны Рэлея, т.е. зависимость фазовой скорости от поверхностной волны частоты. При этом, согласно модели градиентно-упругого полупространства, скорость поверхностной волны не может превосходить скорости сдвиговой волны, но при определенных значениях частоты может ее достигать. Согласно же редуцированной модели Коссера скорость поверхностной волны превышает скорость сдвиговой волны, а также скорость распространения поверхностной волны в классическом полупространстве и градиентно-упругом полупространстве. Ключевые слова: градиентно-упругое полупространство, редуцированная модель Коссера, поверхностная волна, дисперсия, фазовая скорость, частота.

Apolonskij A.A., Sulajmanov R.T. «Acoustic optical mode synchronizer with control block» Приборы и техника эксперимента, 35, № 1, с. 237-238 (1992)

The synchronizer served for loss modulation in laser resonator and thus to form light short pulse train. It was shown to be made of crystalline quartz with temperature factor of acoustic resonance shift less by half than in case of melted one. Moreover, it could be used in powerful laser systems especially in ultraviolet range. Synchronizer’s dimensions and basic frequency of piezotransformer of lithium mobate permitted to use it in powerful lasers with active medium up to 0–15 mm a resonator length of 1–10 m. Control block included: quartz generator, amplifier of 25 Wt for load of 10–100 Ohm, recording system of high-frequency synchronizer-reflected power, temperature control block.

Avdoshin E.S. «A laser interferometer for measuring acoustic pressure in a gas» Приборы и техника эксперимента, 34, № 4, с. 156-160 (1991)

A design of a light guide acoustic radiometer based on a two-channel optical gas-filled interferometer where laser radiation modulation is performed by acoustic pressure on a gas is described. The accuracy of measuring acoustic pressure in the range 20–15 dB is 0.2%. Interferometer optical elements are combined in a common casing, where the measurement of phase difference of measuring and reference channels is done in case, when membrane vibrations take place due to the acoustic pressure. Practically the radiometer is not susceptible to vibrations.