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Роль стабильных свободных радикалов в радиационной электропроводности полиэтилена низкой плотности
Химия высоких энергий. 2011. Т. 45. № 1. С. 51–54.
The radiation-induced conductivity (RIC) of low-density polyethylene (LDPE) under continuous irradiation with fast electrons (50 keV) was experimentally studied. The dose dependence of the concentration of stable paramagnetic centers was determined. The kinetics of RIC in LDPE was calculated on the basis of the Rose–Fowler–Vaisberg (RFV) model taking into account the buildup of radiation-induced traps. Good correlation between the experimental results and calculated data was found.
Kagan M., / Series Series "arxiv org" 2610.31805 "cond-mat other "arxiv org" 2610.31805". 2026. No. 2610.31805.
Abstract The low-energy plasmonic properties of a free-standing Au (111) monolayer, frequently referred to as goldene, are investigated by time-dependent density functional theory in the random phase approximation. In the evaluation of dielectric and loss functions, the first-principle, band structure characterized by a single s − p energy band at the Fermi level is taken ...
Added: October 27, 2026
Гущина В. А., / Series chemrxiv-2023-vpzhz-v2 "ChemRxiv". 2023.
All-inorganic perovskite CsPbBr3 and Cs4PbBr6 nanoparticles are being intensively studied due to their unique properties and wide range of applications; however, however, the nature of their optical properties is not yet fully understood due to the difficulty of synthesis of singlephase nanoparticles. In this article we describe the features of the synthesis of single-phase particles ...
Added: May 14, 2026
Pilé I., Deng Y., Shchur L., / Series arXiv "math". 2026. No. 2604.10254.
We investigate the spatial overlap of successive spin configurations in Markov chain Monte Carlo simulations using the local Metropolis algorithm and the Svendsen-Wang and Wolff cluster algorithms. We examine the dynamics of these algorithms for two models in different universality classes: the Ising model and the Potts model with three components. The overlap of two ...
Added: April 20, 2026
Kagan M., Silkin V. M., Efremov D. V., / Series arXiv "math". 2024. No. 2411.12836.
In this study, we analyze the dielectric function of high-Tc cuprates as a function of doping level, taking into account the full energy band dispersion within the CuO2 monolayer. In addition to the conventional two-dimensional (2D) gapless plasmon mode, our findings reveal the existence of three anomalous branches within the plasmon spectrum. Two of these branches ...
Added: November 27, 2024
Influence of anisotropy on the study of critical behavior of spin models by machine learning methods
Sukhoverkhova D., Shchur L., / Series arXiv "math". 2024. No. 2410.14523.
In this paper, we applied a deep neural network to study the issue of knowledge transferability between statistical mechanics models. The following computer experiment was conducted. A convolutional neural network was trained to solve the problem of binary classification of snapshots of the Ising model's spin configuration on a two-dimensional lattice. During testing, snapshots of ...
Added: October 21, 2024
Tolstikov S., Mullahmetov I., Pozhidaev E. et al., Технологии электромагнитной совместимости 2024 № 1(88) С. 62–71
The study involves the computational modeling of electrostatic discharge initiation in polymer materials utilized in space environment under low-temperature conditions. To address this challenge, experimental data on the radiation-induced electrical conductivity of polyimide and polyethylene terephthalate at reduced temperatures, have been employed. The simulation encompasses the evaluation of electric field intensity within polyimide and polyethylene ...
Added: June 6, 2024
Mozolenko V., Fadeeva Marina, Shchur L., / Series arXiv "math". 2024. No. 2405.10865.
The development of new algorithms for simulations in physics is as important as the development of new analytical methods. In this paper we present a comparison of the recently developed microcanonical population annealing (MCPA) algorithm with the rather mature Wang-Landau algorithm. The comparison is performed on two cases of the Potts model exhibiting a first ...
Added: May 20, 2024
Kagan M., Аксёнов С. В., / Series Research Square "Research Suqare". 2024. No. 1.
We study different resonances (first of all of the Fano type) in the interference device formed by the Aharonov-Bohm ring with superconducting (SC) wire in the topologically nontrivial state playing a role of a bridge between top and bottom arms. We analyze Majorana modes on the ends of the SC wire and show that the collapse of the ...
Added: April 10, 2024
Ребров Я. В., Glazkov V., Murtazoev A. F. et al., / Series cond-mat "arxiv.org". 2023.
Nabokoite family compounds ACu7(TeO4)(SO4)5Cl (A=Na, K, Cs, Rb) are one of the candidates for the evasive spin-liquid state predicted for highly-frustrated square kagome lattice (SKL). Their magnetic subsystem includes SKL layers decorated by additional copper ions. All members of this family are characterized by quite high Curie-Weiss temperatures (∼80−200 K), but magnetic ordering was reported ...
Added: January 29, 2024
Shurakov A., Kaurova N., Belikov I. et al., / Series Physics "arxiv.org". 2022.
In this paper, we report on the method of nondestructive quality control that can be used in fabrication of GaAs high-speed electronics. The method relies on the surface potential mapping and enables rigid in vivo analysis of transport properties of an active electronic device incorporated into a complex integrated circuit. The study is inspired by ...
Added: September 15, 2023
I.R. Mullakhmetov, V.S. Saenko, A.P. Tyutnev et al., Technical Physics Letters 2023 Vol. 68 No. 1 P. 123–126
A technique has been developed and, for the first time, sufficiently complete data on the radiation-induced
conductivity (RIC) of polystyrene (PS) at a temperature of 79K, close to the boiling point of liquid nitrogen
(77K). RIC has been studied under pulsed and continuous exposure to electrons with an energy of 50 keV. It
is shown that the RIC ...
Added: June 27, 2023
И. Р. Муллахметов, В. С. Саенко, А. П. Тютнев et al., Журнал технической физики, Российская Федерация 2023 Т. 93 № 1 С. 130–134
Разработана методика и впервые получены достаточно полные данные по радиационной электропроводности полистирола при температуре 79K при импульсном и непрерывном воздействии электронов с энергией
50 keV. Показано, что радиационная электропроводность полистирола при температуре 79K, как и при
комнатной температуре определяется суммой двух компонент: мгновенной и задержанной. Обе компоненты
при 79K имеют значительно меньшие величины, чем при 298K. Полный сигнал ...
Added: January 2, 2023
Pugach N., Safonchik M. O., Belotelov V. et al., / Series "cond-mat". 2022. No. 2110.00369.
A detailed investigation of a superconducting spin-triplet valve is presented. This spin-valve consists of a superconducting film covering a metal with an intrinsic spiral magnetic order, which could result from competing isotropic exchanges or, if the crystal lattice breaks central symmetry, from asymmetric Dzyaloshinskii-Moriya exchange. Depending on the anisotropy, such a metal may change its ...
Added: November 16, 2022
Novikov S. V., / Series cond-mat "arxiv.org". 2022. No. 2209.14955.
Charge transport in amorphous semiconductors having spatially correlated exponential density of states (DOS) has been considered for the arbitrary behavior of the correlation function of random energies. Average carrier velocity is exactly calculated for the quasi-equilibrium (nondispersive) transport regime. For the symmetric exponential DOS with exponential tails for low and high energies and non-positive correlation ...
Added: November 1, 2022
Ikhsanov R., Tyutnev A., Saenko V. S. et al., Journal of Applied Physics 2022 Vol. 131 Article 115501
We made numerical calculations of the radiation-induced conductivity by computing current densities, carrier concentrations, and internal electric fields in a disordered sample biased by constant applied voltage under a pulsed or step-function irradiation in a large-signal regime. For this purpose, we used the multiple trapping model featuring an exponential trap distribution with the dispersion parameter α. Calculations of ...
Added: March 17, 2022
Ikhsanov R., Mazur E., Kagan M., / Series "Working papers by Cornell University". 2022. No. 2202.01452.
At present, the task of searching for compounds with a high superconducting transition temperature is a very relevant scientific direction. Usually, the calculation of is carried out by numerically solving the system of Eliashberg equations. In this paper, a set of programs for solving this system written in various forms on the imaginary axis is ...
Added: February 4, 2022
Budkov Y., Zavarzin S., Kolesnikov A. L., Journal of Physical Chemistry C 2021 Vol. 125 No. 38 P. 21151–21159
We formulate a general mean-field theory for a flat electric double layer in ionic liquids and electrolyte solutions with ions possessing static polarizability and a permanent dipole moment on a charged electrode. We establish a new analytical expression for electric double-layer differential capacitance, determining it as an absolute value of the ratio of the local ...
Added: September 16, 2021
Radiation-induced conductivity in polyethyleneterephthalate and polyimide: Trap distribution effects
Tyutnev A., Vladimir Saenko, Evgenii Pozhidaev et al., Results in Physics 2021 Vol. 28 P. 104672-1–104672-6
Abstract
We have analyzed the radiation-induced conductivity in polyethyleneterephthalate (PET) and polyimide in terms of the recently developed semi-empirical model whose parameters have been determined numerically by a trial and error method based on our previously published results which have been shown to be correct with respect to such experimental limitations as recombination and current saturation. ...
Added: August 16, 2021
Radiation-induced conductivity in polystyrene, a common insulating polymer with a hopping conduction
Tyutnev A., Vladimir Saenko, Ilshat Mullakhmetov et al., Journal of Applied Physics 2021 Vol. 129 P. 175107-1–175107-9
Radiation-induced conductivity (RIC) of polystyrene has been studied experimentally and numerically mostly in a small-signal regime in a broad time range from some nanoseconds to seconds. It has been established that hole transport is dispersive with a low value of the dispersion parameter α = 0.35. We have suggested a direct method of determination of ...
Added: May 8, 2021
Tyutnev A. P., Saenko V. S., Aleksey D. Zhadov et al., Polymers 2020 Vol. 12 No. 628 P. 1–10
Abstract: We have performed comparative numerical calculations using a multiple trapping (MT)
formalism with an exponential and an aggregate two-exponential trap distributions for describing
two mostly used experimental setups for studying the radiation-induced conductivity (RIC) and
the time-of-flight (TOF) effects. Computations have been done for pulsed and long-time
electron-beam irradiations in a small-signal regime. Predictions of these two approaches ...
Added: April 16, 2020
Pozhidaev E. D., Shaposhnikova V., Alexey R. Tameev et al., Polymers 2020 Vol. 12 No. 00013 P. 1–9
Abstract: Electrical properties of the thin films of poly(arylene ether ketone) copolymers (co-PAEKs)
with the fraction of phthalide-containing units of 3, 5 and 50 mol% in the main chain were
investigated by using radiation induced conductivity (RIC) measurements. Transient current
signals and current-voltage (I-V) characteristics were obtained under exposing 20÷25 thick films of
the co-PAEKs to monoenergetic electron pulses ...
Added: November 20, 2019
Andrey Tyutnev, Vladimir Saenko, Renat Ikhsanov et al., Journal of Applied Physics 2019 Vol. 126 No. 9 P. 095501(1)–095501(9)
We have investigated radiation-induced conductivity (RIC) in several low mobility common polymers as well as two with excellent charge transport characteristics. Irradiations were pulsed and continuous with constant dose rates from microseconds to seconds. Experiments were done in the small-signal mode at a relatively high electric field. To interpret the results, we performed numerical calculations based on ...
Added: September 4, 2019
Ikhsanov R., Демиденко А. А., Доронин А. et al., В кн.: Труды XVII Международного совещания "Радиационная физика твердого тела" (Севастополь , 9-14 июля 2007 г.).: М.: ФГБНУ "НИИ ПМТ", 2007. С. 267–274.
В данной работе рассмотрена модель радиационной электропроводности Роуза – Фаулера - Вайсберга с учетом подвижности неосновных носителей заряда в полимерах. Произведено сравнений полученной модели с двухловушечной моделью Гросса при описании немонотонной кинетики радиационной электропроводности. ...
Added: February 16, 2014
Nereto M., Баранова И. А., Ikhsanov R., В кн.: Труды XIX Международного совещания "Радиационная физика твердого тела" (Севастополь, 31 августа - 5 сентября 2009 г.).: М.: Издательство ГНУ НИИ ПМТ, 2009. С. 603–612.
В настоящей работе предпринята попытка идентификации ловушек носителей заряда в полиэтилене низкой плотности, как свободных радикалов, которые создаются в процессе воздействия ионизирующей радиации. ...
Added: February 16, 2014