中文
相关论文

相关论文: The low-energy positron scattering upon endohedral…

200 篇论文

A line photon incident in an electron-scattering medium is transferred in a diffusive way both in real space and in frequency space, and the mean number of scatterings changes as the wavelength shifts from the line center. This leads to the…

天体物理学 · 物理学 2009-10-31 Hee-Won Lee

We present the main features of the electronic structure of the heavy atoms that is best of all seen in photoionization. We acknowledge how important was and still is investigation of the interaction between low- and high frequency lasers…

原子物理 · 物理学 2015-06-03 M. Ya. Amusia

We discuss the influence of a single or double fullerenes shell upon photoionization and vacancy decay of an atom, stuffed inside the fullerenes construction. The main manifestations of this influence are additional structures in the…

原子物理 · 物理学 2009-06-23 M. Ya. Amusia

In these notes we present a detailed and complete scheme for the calculation of polarization phenomena in elastic electron-nucleon scattering. The longitudinal and transversal components of the polarization for the scattered nucleon,…

核理论 · 物理学 2007-05-23 Michail P. Rekalo , Egle Tomasi-Gustafsson

The probability that photoionization of the caged atom in an endohedral system is accompanied by excitation of the fullerene shell is shown to be close to unity in broad intervals of the photoelectron energies. The result is obtained by…

原子物理 · 物理学 2015-06-15 E. G. Drukarev , M. Ya. Amusia

We discuss the complicated resonance structure of the endohedral atom photoionization cross section. Very strong enhancement and interference patterns in the photoionization cross-section of the valent and subvalent subshells of noble gas…

原子物理 · 物理学 2008-06-03 M. Ya. Amusia , L. V. Chernysheva

The general spin structure of the matrix element, taking into account the two--photon exchange contribution, for the elastic electron (positron) --deuteron scattering has been derived using general symmetry properties of the hadron…

高能物理 - 唯象学 · 物理学 2008-11-26 G. I. Gakh , E. Tomasi-Gustafsson

We analyze using Poisson equation the spatial distributions of the positive charge of carbon atomic nuclei shell and negative charge of electron clouds forming the electrostatic potential of the C60 fullerene shell as a whole. We consider…

原子与分子团簇 · 物理学 2019-05-01 M. Ya. Amusia , A. S. Baltenkov

It is demonstrated that the fullerene shell affects dramatically the radiative and Auger vacancy decay of an endohedral atom A@C60. The collectivized electrons of the C60 shell add new possibilities for radiative and non-radiative decays…

原子物理 · 物理学 2022-06-13 M. Ya. Amusia , A. S. Baltenkov

The low-frequency profiles of some pulsars manifest temporal broadening due to scattering, usually accompanied by flat polarization position angle (PA) curves. Assuming that the scattering works on the 4 Stokes parameters in the same way,…

天体物理学 · 物理学 2008-11-26 X. H. Li , J. L. Han

Fullerenes are known to be polarizable due to the strained carbon-carbon bonds and high surface curvature. Electronic polarization of fullerenes is of steady practical importance, since it leads to non-additive interactions and, therefore,…

材料科学 · 物理学 2015-01-21 Vitaly V. Chaban , Eudes Eterno Fileti

We discuss the temporal picture of electron collisions with fullerene. Within the framework of a Dirac bubble potential model for the fullerene shell, we calculate the time delay in slow-electron elastic scattering by it. It appeared that…

原子与分子团簇 · 物理学 2019-06-18 M. Ya. Amusia , A. S. Baltenkov

We previously predicted [P.A. Hervieux et al., Phys. Rev. A \textbf{95}, 020701 (2017)] that owing to predominant electron capture by incoming positrons from the molecular shell, C$_{60}$ acts like a spherical diffractor inducing resonances…

原子与分子团簇 · 物理学 2021-06-08 Paul-Antoine Hervieux , Anzumaan R. Chakraborty , Himadri S. Chakraborty

We show that both confined atoms and electron-atom scattering can be described by a unified basis set method. The central idea behind this method is to place the atom inside a hard potential sphere, enforced by a standard Slater type basis…

其他凝聚态物理 · 物理学 2015-05-13 Meta van Faassen

Polyelectrolyte complexation plays an important role in materials science and biology. The internal structure of the resultant polyelectrolyte complex (PEC) phase dictates properties such as physical state, response to external stimuli, and…

The differential cross section and polarization observables for the elastic reaction induced by deuteron scattering off electrons at rest are calculated in the one-photon-exchange (Born) approximation. Specific attention is given to the…

核理论 · 物理学 2023-12-06 G. I. Gakh , M. I. Konchatni , N. P. Merenkov , E. Tomasi-Gustafsson , A. G. Gakh

We demonstrate for the first time that the effect of fullerene shell upon photoionization of the "caged" atom in an endohedral can result in formation of Giant Endohedral Resonances or GER. This is illustrated by the concrete case of Xe@C60…

化学物理 · 物理学 2009-11-13 M. Ya. Amusia , A. S. Baltenkov , L. V. Chernysheva

The recent theoretical and experimental activities in positronium (Ps) scattering by atoms and molecules are reviewed with special emphasis at low energies. We critically compare the results of different groups $-$ theoretical and…

化学物理 · 物理学 2009-11-07 Sadhan K. Adhikari

In this paper we calculate the elastic scattering cross sections of slow electron by carbon nanotubes. The corresponding electron-nanotube interaction is substituted by a zero-thickness cylindrical potential that neglects the atomic…

介观与纳米尺度物理 · 物理学 2022-02-23 M. Ya. Amusia , A. S. Baltenkov

This work aims to study theoretically the electron-proton scattering for initially spin-polarized electrons in the presence of a circularly polarized electromagnetic field. Using the first Born approximation and the Dirac-Volkov states for…

高能物理 - 唯象学 · 物理学 2022-07-13 I. Dahiri , M. Baouahi , M. Jakha , S. Mouslih , B. Manaut , S. Taj