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Dive into the research topics where Yu. V. Stenkin is active.

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Featured researches published by Yu. V. Stenkin.


Journal of Instrumentation | 2014

The array for EAS neutron component detection

D. M. Gromushkin; V. V. Alekseenko; A. A. Petrukhin; O. B. Shchegolev; Yu. V. Stenkin; V.I. Stepanov; I. I. Yashin; E. A. Zadeba

The idea of a novel type detector array is the following: delayed thermal neutrons generated by hadronic component of Extensive Air Showers (EAS) can be detected over the whole array area using special electron-neutron detectors (en-detectors). The array PRISMA-32 consists of 32 en-detectors, deployed over the area of 450 m2. En-detectors are able to detect two main EAS components: electromagnetic one in a case of a synchronous passage of several charged particles, and hadronic component through thermal neutron captures. Detectors are based on a specialized inorganic scintillator, being a granulated alloy of ZnS(Ag) with LiF, enriched up to 90% with 6Li isotope. The array is triggered by the electromagnetic component of EAS, and provides information about the energy deposit (mostly electrons) and delayed neutrons accompanying the EAS within 20 ms after the trigger. During 2 years of operation more than 105 events were recorded. Examples of EAS detection are presented.


Physics of Atomic Nuclei | 2007

Neutrons in Extensive Air Showers

Yu. V. Stenkin; D. D. Djappuev; J. F. Valdés-Galicia

The main properties of the so-called neutron bursts produced by the passage of extensive air showers (EASs) through a detector array and the properties of these EASs are considered using the experiments that are being or have been carried out previously with the Carpet-2 array at Baksan Neutrino Observatory of the Institute for Nuclear Research, Russian Academy of Sciences, and at Cosmic-Ray Station of UNAM in Mexico as examples. We show that no exotic processes are required to explain the nature of neutron bursts. Based on a working prototype of the previously proposed MULTICOM array, we also show that this phenomenon can be successfully used in studying the EAS hadronic component and that adding special thermal neutron detectors can improve significantly the capabilities of the array for EAS study.


Chinese Physics C | 2013

Thermal neutron flux produced by EAS at various altitudes

Yu. V. Stenkin; V. V. Alekseenko; D. M. Gromushkin; Liu Ye; Ma Xin-Hua; Zhao Jing

The results of Monte-Carlo simulations of extensive air showers are presented to show the difference of the hadronic component content at various altitudes with the aim to choose an optimal altitude for a PRISMA-like experiment. The CORSIKA program for EAS simulations with QGSJET and GHEISHA models was used to calculate the number of hadrons reaching the observational level inside a circle of 50 m radius around the EAS axis. Then the number of neutrons produced by the hadronic component was calculated using an empirical relationship between the two components. We have tested the results with the ProtoPRISMA array at sea level, and recorded the neutrons which are consistent with the simulation results.


Bulletin of The Russian Academy of Sciences: Physics | 2011

Study of the temporal structure of the EAS neutron component

D. M. Gromushkin; A. A. Petrukhin; Yu. V. Stenkin; I. I. Yashin

Experimental data on detecting the thermal neutrons that accompany extensive air showers (EAS) over a long period of time (May 2009–April 2010) are presented. The data were obtained by means of prototype for an innovative new array (PRISMA) for EAS study. The workability of this array and its ability to yield completely new information on the hadron and electron components of EAS was checked experimentally over long period of time (in the minimal version of the prototype).


Izvestiya-physics of The Solid Earth | 2009

Correlation of variations in the thermal neutron flux from the Earth’s crust with the Moon’s phases and with seismic activity

V. V. Alekseenko; Yu. M. Gavrilyuk; D. M. Gromushkin; D. D. Dzhappuev; A. U. Kudzhaev; V. V. Kuzminov; O. I. Mikhailova; Yu. V. Stenkin; V.I. Stepanov

The results of the long-term recording of thermal neutron flux near the Earth’s surface with the use of an unshielded scintillation thermal-neutron detector are presented. The data obtained indicate the presence of periodic variations in the thermal neutron flux with the lunar diurnal and the lunar monthly periods. A hypothesis about the existence in the Earth’s crust of radon-neutron tidal variations in the concentration of thermal neutrons, correlated with the Moon’s phases and which have the gravitational origin, is formulated and confirmed experimentally. A simple mathematical model is proposed, which satisfactorily describes the observed variations. The case of the anomalous behavior of thermal neutrons is presented, which correlates with the high local seismic activity.


Physics of Atomic Nuclei | 2008

On special features of the longitudinal development of extensive air showers and on the spectrum of cosmic rays

Yu. V. Stenkin

It is shown that, in the development of an extensive air shower (EAS) initiated by primary cosmic rays in the Earth’s atmosphere, there is a special feature that sterms from the violation of equilibrium between EAS components and whose inclusion requires revising both EAS phenomenology and the existing experimental data obtained by indirectly measuring the energy spectrum of cosmic rays by the EAS method.


Journal of Physics: Conference Series | 2013

The ProtoPRISMA array for EAS study: first results

D. M. Gromushkin; V. V. Alekseenko; A. A. Petrukhin; O Shchegolev; Yu. V. Stenkin; V. I. Stepanov; V. I. Volchenko; I. I. Yashin

A prototype of the PRISMA project array has been deployed and started running on the basis of the NEVOD complex at National Research Nuclear University MEPhI. It consists now of 32 detectors of a novel type (en-detector) sensitive to two main EAS components: electromagnetic (e) and hadronic (through thermal neutrons (n)) ones. The purpose of the array is testing and developing of a new experimental method of EAS study through neutron and electromagnetic components recording, optimization of the detector design and the data acquisition system. First experimental results are presented and compared with first Monte-Carlo simulations.


Bulletin of The Russian Academy of Sciences: Physics | 2013

A novel type of EAS recording array: First results

D. M. Gromushkin; V. V. Alekseenko; V. I. Volchenko; A. A. Petrukhin; Yu. V. Stenkin; V. I. Stepanov; O. V. Shchegolev; I. I. Yashin

The prototype of a novel type EAS (extensive air shower) recording and investigation array (the PRISMA project) is created on the basis of the NEVOD experimental complex through cooperation between Institute for Nuclear Research, Russian Academy of Sciences, and the National Research Nuclear University MEPhI. The prototype (ProtoPRISMA) consists of thirty-two en-detectors sensitive to EAS electromagnetic (e) and hadronic (via the registration of thermal neutrons) (n) components. The array is designed to develop and to test a new method of EAS investigation using neutron and electromagnetic components and to obtain preliminary data on the spectrum and composition of cosmic rays.


Journal of Physics: Conference Series | 2010

Tidal effect in the radon-due neutron flux from the Earth's crust

V. V. Alekseenko; Yu M Gavriluk; V. V. Kuzminov; Yu. V. Stenkin

Baksan Neutrino Observatorys results on variations of thermal neutron flux below and above the ground surface measured with an unshielded scintillator detector are presented. Experimental evidences were obtained of the existence of seasonal wave in the long-term thermal neutron flux variations as well as correlation between this variations and lunar periods.


Bulletin of The Russian Academy of Sciences: Physics | 2009

Thermal neutron flux detection near the Earth’s surface

D. M. Gromushkin; V. V. Alekseenko; A. A. Petrukhin; Yu. V. Stenkin; I. I. Yashin

The thermal neutron flux near the Earth’s surface has been measured using large unshielded neutron scintillator detectors of a new type, based on ZnS(Ag) and lithium fluoride, enriched with 6Li to 90%. The existence of a gradient of the thermal neutron concentration near the Earth’s surface is shown.

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D. M. Gromushkin

National Research Nuclear University MEPhI

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I. I. Yashin

National Research Nuclear University MEPhI

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A. A. Petrukhin

National Research Nuclear University MEPhI

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V. V. Alekseenko

Russian Academy of Sciences

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O. B. Shchegolev

Russian Academy of Sciences

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V. I. Stepanov

Russian Academy of Sciences

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F.A. Bogdanov

National Research Nuclear University MEPhI

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K. O. Yurin

National Research Nuclear University MEPhI

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V. I. Volchenko

Russian Academy of Sciences

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D. D. Djappuev

Russian Academy of Sciences

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