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Кирсанов, Михаил Алексеевич

Организационные подразделения

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Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.

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Кирсанов

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Михаил Алексеевич

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Теперь показываю 1 - 10 из 11

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Numerical Simulation of Radiation Anisotropy of the Pyroelectric Neutron Generator
(2019) Gromov, M. B.; Kubankin, A. S.; Ionidi, V. Y.; Kaplii, A. A.; Kirsanov, M. A.; Кирсанов, Михаил Алексеевич
The pyroelectric neutron generator is a compact source of fast neutrons with an energy of 2.45 MeV and a yield up to approximate to 10(4) neutrons/s. The device is designed for calibration of low-background neutrino and dark matter detectors and may also serve as an alternative to traditional radioactive sources of fast neutrons in physical research and practical work. Numerical simulation of the angular distribution of neutrons emitted by the pyroelectric generator with the D(d, n)He-3 reaction proceeding within it was performed in order to calculate the neutron yield in the full solid angle and in a given direction correctly. The angular distribution was found to be anisotropic: the neutron yield increased in the direction of motion of incident deuterium ions. This anisotropy was as large as approximate to 25% at a maximum energy of 28 keV of incident particles. The anisotropy increased nonlinearly with the ion energy: it reached approximate to 70% at 50 keV and a monoenergetic flux, but was virtually zero below 10 keV. The obtained angular distribution is similar to that of neutrons in the case of a 15-keV monoenergetic flux of deuterium ions.
Только метаданные
REGISTRATION OF THE YIELD OF d + d NUCLEAR REACTION PRODUCTS FROM A POLYCRYSTALLINE DIAMOND TARGET AT THE ION ACCELERATOR HELIS
(2022) Negodaev, M. A.; Movchun, S. A.; Popovich, A. F.; Rusetskii, A. S.; Kirsanov, M. A.; Кирсанов, Михаил Алексеевич
© 2022, Allerton Press, Inc.Abstract: The experimental data on the yield of d + d-reaction products for polycrystalline diamond target, obtained in the studies at the HELIS ion accelerator are presented. The equipment and neutron and charged particle detectors used in the study are described. The possibility of using the Unique Scientific Facility (USF) HELIS to verify operating characteristics of semiconductor detectors of alpha particles intended in studies of the boron–proton capture reaction at the Prometheus proton therapy complex is shown.
Только метаданные
Investigation of Neutron Generation upon Irradiation of Deuterated Crystalline Structures with an Electron Beam
(2021) Dalkarov, O. D.; Negodaev, M. A.; Rusetskii, A. S.; Kubankin, A. S.; Kirsanov, M. A.; Кирсанов, Михаил Алексеевич
© 2021, Pleiades Publishing, Ltd.Abstract: The possibility of neutron generation by irradiating deuterated crystalline structures with an electron beam with an energy of 20–40 keV was studied. As targets, the deuterated crystalline structures of palladium and textured CVD diamond were used. Measurements of neutron emission are presented, which were carried out by three independent methods—scintillation detectors, counters based on He-3, and track detectors CR-39.The average neutron flux during irradiation was estimated as 1–10s-1 in 4π sr.
Только метаданные
Principles of Chemical Designing of Styrene-Based Plastic Scintillators Doped with Quantum Dots
(2024) Knysh, A.; Kirsanov, M.; Sosnovtsev, V.; Nabiev, I.; Samokhvalov, P.; Кныш, Александр Александрович; Кирсанов, Михаил Алексеевич; Сосновцев, Валерий Витальевич; Набиев, Игорь Руфаилович; Самохвалов, Павел Сергеевич
Только метаданные
Investigation of the interaction of the ion beams with deuterated crystal structures at the HELIS facility
(2020) Dalkarov, O. D.; Negodaev, M. A.; Rusetskii, A. S.; Oginov, A. V.; Kirsanov, M. A.; Кирсанов, Михаил Алексеевич
The paper reviews results obtained in the course of low energy nuclear reactions experimental study using the HELIS facility (LPI). The analysis of DD-reaction yields in deuterated crystalline structures at deuteron energies of 10-25 keV has shown a significant amplification effect. It was found that the exposure of deuterated targets both to 10-25 keV H+ and Ne+ ion beams and 20-30 keV X-ray radiation beams results in stimulation of DD-reaction yield. For CVD diamond and PdD x targets, it was shown that the magnitude of the neutron yield is affected by the orientation of the sample with respect to the deuteron beam. The possible explanation of the said effect may be attributed to the channeling of deuterium ions and neutron (DD reaction products) in textured targets. It was found that the heat release is much higher when D+ ion beams act upon the TiD x target than in case with H+ and Ne+ beams. The heat release depends upon the deuterium concentration in the target and the deuteron beam current density. "Additional peaks" were observed in the X-ray fluorescence spectra, but those are not related to any element and are seemingly associated with diffraction processes in deuterated palladium and CVD diamond.
Только метаданные
Passage of Fast Neutrons Through the Crystal Structure of Textured CVD Diamond
(2020) Dalkarov, O. D.; Glushkov, N. A.; Negodaev, M. A.; Rusetsky, A. S.; Kirsanov, M. A.; Кирсанов, Михаил Алексеевич
© 2020, Pleiades Publishing, Ltd.Abstract: The passage of fast neutrons through the crystal structure of a textured diamond obtained by chemical vapor deposition (CVD diamond) is studied. Neutrons with an energy of 2.45 MeV from the DD reaction and with an average energy of about 2 MeV from the 252Cf isotope are used as neutron sources. The neutrons are detected by two independent methods: using proportional counters filled with 3Не and a paraterphenyl-based scintillation detector. The measurements show that the neutron-flux incident on the detector depends on the orientation of the target. In the case of isotropic samples containing diamond and carbon, such effects are not observed. A possible explanation for the effect is the channeling of deuterium ions and neutrons in channels of textured CVD diamond.
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Investigation of the interaction of ion beams and X-ray quanta with deuterated crystal structures at the HELIS facility
(2019) Dalkarov, O. D.; Negodaev, M. A.; Rusetskii, A. S.; Chepurnov, A. S.; Kirsanov, M. A.; Selivanova, D. A.; Кирсанов, Михаил Алексеевич
© Published under licence by IOP Publishing Ltd.The results of studies of the interaction of ion beams and X-ray quanta with deuterated crystal structures at the HELIS facility (LPI) are presented. Results on research of DD-reactions in deuterated crystal structures at deuteron energies 10-25 keV show significant enhancement effect. It is shown that the effect of the beams of ions Ne+ and H+ at energies in the range of 10-25 keV and a beam of X-radiation of 20-30 keV for deuterated target leads to stimulation of DD-reaction. For the target of CVD-diamond it is showed that the orientation of the sample with respect to the deuteron beam affects the neutron yield. Targets (deuterated CVD diamond, palladium, zirconium and titanium) were irradiated with both ion beams and X-ray quanta using an X-ray tube with an energy of up to 30 keV. Analysis of X-ray fluorescence spectra from deuterated targets of CVD diamond and palladium revealed "additional" peaks that are not identified by any of the characteristic radiation lines. Their appearance cannot be connected with any known element, as well as with diffraction processes.
Открытый доступ
Modernization of the pulse shape discrimination method for neutron and gamma quanta in scintillation detector
(2019) Chepurnov, A. S.; Kubankin, A. S.; Ivanenko, M. I.; Kirsanov, M. A.; Klimanov, S. G.; Кирсанов, Михаил Алексеевич; Климанов, Сергей Геннадиевич
© Published under licence by IOP Publishing Ltd.In this paper, we investigated the efficiency of several known and new methods of digital pulse shape discrimination for neutrons and gamma quanta. Experimental data were obtained on a setup consists of a Pu-Be neutron source, organic p-terphenyl scintillation detector and 14 bits, 500 MHz sampling rate flash-ADC with capability to store and upload to the host computer long waveforms for further analysis. A comparison is made in between the results of using traditional and new methods for calculating the signal separation efficiency of Figure of Merit (FOM). The best known from the literature value of the efficiency of neutron and gamma quanta discrimination for the Pu-Be source is FOM = 1.5. We obtained the separation efficiency FOM = 1.77 in the scintillation detector with the p-terphenyl crystal, by a new method. Note also that for the known liquid scintillator BC-501A FOM≈1. A new method of scintillation detector pulse shape discrimination from neutrons and gamma quanta is used to detect the neutron yield from compact neutron generator that is created on the basis of carbon nanotubes.
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Compact neutron generators for the calibration of low background experiments
(2019) Chepurnov, A. S.; Gromov, M. B.; Ionidi, V. Y.; Kaplii, A. A.; Kirsanov, M. A.; Maslenkina, A. Y.; Selivanova, D. A.; Кирсанов, Михаил Алексеевич
© Published under licence by IOP Publishing Ltd.In the coming years, the compact monoenergetic neutron generators (CNG) producing up to 104 n/s may become an alternative to the standard neutron sources based on radioactive isotopes for the calibrations of neutrino and dark matter detectors. Such neutron generators have a typical size of about several centimetres, they may be manufactured using low-background materials and may require only low voltage power supply for operation. We discuss the advantages and disadvantages of two main types of the compact neutron generators, namely a pyroelectric neutron source and a high voltage neutron generator. Also the results of the technical analysis of the possibilities to apply such sources for the calibration of low-background experiments are given, the variant of the internal device design is shown and the full-size compact neutron generator prototype are presented.
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Identification of neutrons and gamma rays using a combination of three algorithms for separating signals of the scintillation detector
(2020) Chepurnov, A. S.; Kirsanov, M. A.; Klimanov, S. G.; Кирсанов, Михаил Алексеевич; Климанов, Сергей Геннадиевич
© Published under licence by IOP Publishing Ltd.Scintillation detectors with organic scintillators are widely used for fast neutrons detection in high gamma ray background. The peculiarity of this type of detector is that the pulse shape depends on the type of the detected particle. Traditionally, the Pulse Shape Discrimination (PSD) histogram is used to determine the number of detected neutrons. The PSD parameter is calculated from the shape of the detector pulse and assigned to each pulse. A typical PSD histogram contains two peaks corresponding to neutrons and gamma rays that overlap in the region between the peaks. With this approach, it is impossible to identify each individual signal in the area between the peaks. Therefore, it is not possible to calculate the overall signal identification coefficient. We have proposed a new method for the identification of neutrons and gamma quanta, which includes a combination of three signal separation algorithms: The traditional histogram PSD, the dependence of the area of signals on their amplitude, Tau histogram (tau means the fall constant of the detector pulses). This combination of three algorithms makes it possible to calculate the value of the signal identification coefficient. To test a new method for identifying neutrons and gamma quanta, we used a Pu-Be neutron source, a scintillation detector with a p-Terphenyl crystal and a CAEN DT5730 Digitizer (14 bit, 500 MHz). When a scintillation detector registered neutron from a Pu-Be source, the signal identification coefficient was 91.6%. A new method for identifying signals from a scintillation detector is used to register neutrons at the light ion accelerator.