Dynamics of systems on the nanoscale

Korol, Andrey V.; Solov’yov, Andrey V.

doi:10.1140/epjd/e2017-80698-y

Cited by 5 publications

(11 citation statements)

References 29 publications

(38 reference statements)

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“…Examples of the systems calculated in a similar geometries can be found in Ref. [23]. The particle trajectories and electromagnetic spectra were calculated for the straight crystals and for the PBCs with following bending amplitudes a = 1.2, 2.5 and 4.0Å.…”

Section: Methodology and Simulation Parametersmentioning

confidence: 99%

“…It was shown in Ref. [23] that periodicity in the bending significantly enhances the re-channeling rate even in the limit of large bending curvatures 1/R max . At the distances with maximum curvature (minima and maxima of the cosine bending profile), the dechanneling rate is the largest, this results to the minima of the channeling fraction N ch /N .…”

Section: Electron Channelingmentioning

confidence: 98%

“…2 should account for the length of all channeling segments in the trajectory L tot . However, for the crystals shorter than the dechanneling length the re-channeling events are rare [17,20,23,24]. The positrons with energy of several hundreds MeV have channeling length L p ≫ 100 µm [55], so in that case L can be calculated as the mean penetration L p length (this value is depicted in column 7 of Table 1).…”

Section: Positron Channelingmentioning

confidence: 99%

“…In recent years, the study of the phenomenon of channeling has attracted much attention. A significant number of theoretical [17,[22][23][24][25][26][27][28][29][30] and experimental [31][32][33][34][35][36][37][38][39][40] works has been done to define the channeling parameters and electromagnetic radiation spectrum arising in the process. Additionally, several experiments have been performed aiming at detecting the CUR.…”

Section: Introductionmentioning

confidence: 99%

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Channeling of electrons and positrons in straight and periodically bent diamond(110) crystals

Павлов

Korol²,

Ivanov

et al. 2020

Eur. Phys. J. D

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In this paper we present the results from systematic analysis of the channeling properties of electrons and positrons in a straight and periodically bent diamond(110) crystals. We theoretically analyse the dependence of channeling and undulator radiation for the periodically bent crystals intensity on the energy of the particle as well as on bending amplitude of the crystal. The presented analisis are based on the grounds of accurate numerical simulations of the channeling process. The simulation parameters, such as the crystalline orientation, length and bending parameters of the diamond crystals as well as the energy of the projectiles, were chosen to match ones in past and ongoing experiments. The non-linear evolution of the radiation spectra was explained by the interplay of various radiation mechanisms in these systems. Such an analysis can be used to predict and explain future experimental results. PACS. 61.85.+p Channeling phenomena -41.60.-m Radiation by moving charges -41.75.Ht Relativistic electron and positron beams -02.70.Uu Applications of Monte Carlo methods -07.85.Fv X-and γ-ray sources, mirrors, gratings, and detectors

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Section: Methodology and Simulation Parametersmentioning

confidence: 99%

Section: Electron Channelingmentioning

confidence: 98%

Section: Positron Channelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Channeling of electrons and positrons in straight and periodically bent diamond(110) crystals

Павлов

Korol²,

Ivanov

et al. 2020

Eur. Phys. J. D

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“…A biannual series of International Symposia on Atomic Cluster Collisions (ISACC) 1 [61][62][63][64] is devoted to the structure, properties and dynamics of complex nuclear, atomic, molecular, cluster, nanoscopic and biological systems studied primarily by means of photonic, electronic, heavy particle and atomic collisions. The biannual International Conferences on Dynamics of Systems on the Nanoscale (DySoN) [65,66] promote the growth and exchange of interdisciplinary scientific information on the structure formation and dynamics of animate and inanimate matter on the nanometre scale.…”

mentioning

confidence: 99%

Many particle spectroscopy of atoms, molecules, clusters and surfaces: international conference MPS-2016

et al. 2017

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Abstract. The conference on Many Particle Spectroscopy of Atoms, Molecules, Clusters and Surfaces (MPS-2016) brought together near to a hundred scientists in the field of electronic, photonic, atomic and molecular collisions, and spectroscopy from around the world. We deliver an Editorial of a topical issue presenting original research results from some of the participants on both experimental and theoretical studies involving many particle spectroscopy of atoms, molecules, clusters and surfaces.

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From Exhaustive Simulations to Key Principles in DNA Nanoelectronics

Korol

Segal

2018

J. Phys. Chem. C

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Charge transfer can take place along double helical DNA over distances as long as 30 nanometers. However, given the active role of the thermal environment surrounding charge carriers in DNA, physical mechanisms driving the transfer process are highly debated. Moreover, the overall potential of DNA to act as a conducting material in nanoelectronic circuits is questionable. Here, we identify key principles in DNA nanoelectronics by performing an exhaustive computational study. The electronic structure of double-stranded DNA is described with a coarse-grained model. The dynamics of the molecular system and its environment is taken into account using a quantum scattering method, mimicking incoherent, elastic and inelastic effects. By analyzing all possible sequences with 3 to 7 base pairs, we identify fundamental principles in DNA nanoelectronics: The environment crucially influences the electrical conductance of DNA, and the majority of sequences conduct via a mixed, coherent-incoherent mechanism. Likewise, the metal-molecule coupling and the gateway states play significant roles in the transport behavior. While most sequences analyzed here are exposed to be rather poor electrical conductors, we identify exceptional DNA molecules, which we predict to be excellent and robust conductors of electric current over a wide range of physical conditions.

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Dynamics of systems on the nanoscale

Abstract: Abstract. Various aspects of the structure formation and dynamics of animate and inanimate matter on the nanoscale is a highly interdisciplinary field of rapidly emerging research interest by both experimentalists and theorists.

Cited by 5 publications

References 29 publications

Channeling of electrons and positrons in straight and periodically bent diamond(110) crystals

Channeling of electrons and positrons in straight and periodically bent diamond(110) crystals

Many particle spectroscopy of atoms, molecules, clusters and surfaces: international conference MPS-2016

From Exhaustive Simulations to Key Principles in DNA Nanoelectronics

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