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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

Compton scattering of twisted photons is investigated within a non-relativistic framework using first-order perturbation theory. We formulate the problem in the density matrix theory, which enables one to gain new insights into scattering…

原子物理 · 物理学 2015-07-03 S. Stock , A. Surzhykov , S. Fritzsche , D. Seipt

It seems that a stochastic system must be a nonlinear one to observe the phenomenon, noise induced transition. But in the present paper, we have demonstrated that the phenomenon may be observed even in a linear stochastic process where both…

统计力学 · 物理学 2022-01-04 Shrabani Mondal , L. R. Rahul Biswas , Mousumi Biswas , Bidhan Chandra Bag

A discrete spherical harmonics method is developed for the radiative transfer problem in inhomogeneous polarized planar atmosphere illuminated at the top by a collimated sunlight while the bottom reflects the radiation. The method expands…

天体物理仪器与方法 · 物理学 2018-02-07 Romuald Tapimo , Hervé Thierry Tagne Kamdem , David Yemele

Nuclear resonant x-ray diffraction in grazing incidence geometry is used to determine the lateral magnetic configuration in a one-dimensional lattice of ferromagnetic nanostripes. During magnetic reversal, strong nuclear superstructure…

The possibility of determining the magnitude of neutral atom density in hydrogen plasma was investigated using Paschen-Back effect and resonant Faraday rotation of the polarization plane of light by residual neutral atoms in the plasma. In…

等离子体物理 · 物理学 2025-02-12 Koryun Oganesyan , Krzysztof Dzierzega , Ashot Gevorgyan , Peter Kopcansky

We propose that the energy-dependent spatial modulation of the local density of states seen by Hoffman, et al [hoff2] is due to the scattering interference of quasiparticles. In this paper we present the general theoretical basis for such…

超导电性 · 物理学 2009-11-07 Qiang-Hua Wang , Dung-Hai Lee

The impact of the short-range interaction on the resonances occurrence in the anisotropic dipolar scattering in a plane was numerically investigated for the arbitrarily oriented dipoles and for a wide range of collision energies. We…

原子物理 · 物理学 2020-11-17 Eugene A. Koval , Oksana A. Koval

We report a neutron scattering study of the metallic triangular lattice antiferromagnet PdCrO$_2$. Powder neutron diffraction measurements confirm that the crystalline space group symmetry remains $R\bar{3}m$ below $T_N$. This implies that…

Most of the quantitative information about the magnetic field vector in solar prominences comes from the analysis of the Hanle effect acting on lines formed by scattering. As these lines can be of non-negligible optical thickness, it is of…

太阳与恒星天体物理 · 物理学 2016-12-21 Ivan Milic , Marianne Faurobert , Olga Atanackovic

Many applications of electromagnetic scattering involve particles immersed in an absorbing rather than lossless medium, thereby making the conventional scattering theory potentially inapplicable. To analyze this issue quantitatively, we…

光学 · 物理学 2018-09-05 M. I. Mishchenko , J. M. Dlugach

We consider two aspects of scattering in strong plane wave backgrounds. First, we show that the infra-red divergences in elastic scattering depend on the structure of the background, but can be removed using the usual Bloch-Nordsieck…

高能物理 - 理论 · 物理学 2013-05-01 Anton Ilderton , Greger Torgrimsson

We present Monte Carlo simulations of radiative transfer in magnetar atmospheres. We include the effects of vacuum polarization, electron and proton scattering, and free-free absorption. Simulations are performed for the atmosphere model…

天体物理学 · 物理学 2009-11-10 Jacek Niemiec , Tomasz Bulik

Strong light-matter coupling gives rise to polaritons -- quasiparticles that combine both photonic and material characteristics. Here, we show that polar nanocrystals exhibit structure- and environment-dependent Raman scattering, enabled by…

Model independent radiative correction to the recoil proton polarization for the elastic electron-proton scattering is calculated within method of electron structure functions. The explicit expressions for the recoil proton polarization are…

高能物理 - 唯象学 · 物理学 2009-10-31 A. V. Afanasev , I. Akushevich , N. P. Merenkov

We have developed a complete theory for the calculation of the observed Stokes parameters for radiation emitted from the surface of a rapidly rotating neutron star (NS) using the oblate Schwarzschild approximation. We accounted for the…

高能天体物理现象 · 物理学 2020-11-11 Vladislav Loktev , Tuomo Salmi , Joonas Nättilä , Juri Poutanen

Observations show that the X-ray emission of the accreting weakly magnetized neutron stars is polarized. Here, we develop a theoretical model, where we assume the emission of the accreting neutron star coming from the spreading layer, the…

高能天体物理现象 · 物理学 2025-05-06 Anna Bobrikova , Juri Poutanen , Vladislav Loktev

We construct hydrogen atmosphere models for strongly magnetized neutron stars in thermodynamic equilibrium, taking into account partial ionization. The presence of bound states affects the equation of state, absorption coefficients, and…

天体物理学 · 物理学 2007-05-23 A. Y. Potekhin , D. Lai , G. Chabrier , W. C. G. Ho

Owing to recent advances in laser technology, it has become important to investigate fundamental laser-assisted processes in very powerful laser fields. In the present work and within the framework of laser-assisted quantum electrodynamics…

量子物理 · 物理学 2021-09-01 I Dahiri , M Jakha , S Mouslih , B Manaut , S Taj

Radiative transfer modeling of spectral lines including partial redistribution (PRD) effects requires the evaluation of the ratio of the emission to the absorption profile. This quantity requires a large amount of computational work if one…

太阳与恒星天体物理 · 物理学 2015-06-05 Jorrit Leenaarts , Tiago Pereira , Han Uitenbroek