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The swelling kinetics of charged polymer gels reflect the complex competition among elastic, mixing, and ionic contributions. Here, we used dynamic light scattering to investigate the collective diffusion coefficient of model gels, whose…

软凝聚态物质 · 物理学 2024-02-01 Shoei Sano , Takashi Yasuda , Takeshi Fujiyabu , Naoyuki Sakumichi , Takamasa Sakai

A scheme for analyzing Thomson scattering of x-rays by warm dense matter, based on the average-atom model, is developed. Emphasis is given to x-ray scattering by bound electrons. Contributions to the scattered x-ray spectrum from elastic…

等离子体物理 · 物理学 2012-11-02 W. R. Johnson , J. Nilsen , K. T. Cheng

Two independent calculations of proton-deuteron elastic scattering observables including Coulomb repulsion between the two protons are compared in the proton lab energy region between 3 MeV and 65 MeV. The hadron dynamics is based on the…

核理论 · 物理学 2009-11-11 A. Deltuva , A. C. Fonseca , A. Kievsky , S. Rosati , P. U. Sauer , M. Viviani

We investigate the scaling properties of elastic scattering data at ISR and LHC energies and find that the significance of an Odderon observation is larger than the discovery threshold of 5$\sigma$. As an unexpected by-product of these…

高能物理 - 唯象学 · 物理学 2021-02-01 T. Csorgo , T. Novak , R. Pasechnik , A. Ster , I. Szanyi

Cross sections and analyzing powers for proton elastic scattering from $^{116,118,120,122,124}$Sn at 295 MeV have been measured for a momentum transfer of up to about 3.5 fm$^{-1}$ to deduce systematic changes of the neutron density…

Elastic scattering of relativistic electrons from the nucleon yields Lorentz invariant form factors that describe the fundamental distribution of charge and magnetism. The spatial dependence of the nucleon's charge and magnetism is…

核实验 · 物理学 2016-06-28 T. W. Donnelly , D. K. Hasell , R. G. Milner

Deep--elastic scattering and its role in discrimination of the possible absorptive and reflective asymptotic scattering mechanisms are discussed with emphasis on the difference in the experimental signatures related to production processes.

高能物理 - 唯象学 · 物理学 2012-01-23 S. M. Troshin , N. E. Tyurin

We investigate the effect of high order radiative corrections in unpolarized electron proton elastic scattering and compare with the calculations at lowest order, which are usually applied to experimental data. We show that higher order…

高能物理 - 唯象学 · 物理学 2008-05-26 E. A. Kuraev , Yu. Bystritskiy , S. Bakmaev , V. V. Bytev , E. Tomasi-Gustafsson

We re-examine a string dual model for elastic proton-proton scattering via Pomeron exchange. We argue that the method of "Reggeizing" a propagator to take into account an entire trajectory of exchanged particles can be generalized, in…

高能物理 - 唯象学 · 物理学 2018-09-26 Ziyi Hu , Brian Maddock , Nelia Mann

We concentrate on several relatively new aspects of the study of fast electron scattering by atoms and atom-like objects, namely endohedral atoms and fullerenes. We show that the corresponding cross sections, being expressed via so-called…

原子物理 · 物理学 2007-05-23 M. Ya. Amusia

We calculate the leading twist contribution to near-forward proton-proton (and proton-antiproton) elastic scattering with large momentum transfer, in the multiple scattering (Landshoff) mechanism. The amplitude in the near-forward region is…

高能物理 - 唯象学 · 物理学 2014-11-17 Michael G. Sotiropoulos , George Sterman

The discrepancy between polarized and unpolarized measurements of the proton's electromagnetic form factors is striking, and suggests that two-photon exchange (TPE) may be playing a larger role in elastic electron-proton scattering than is…

核实验 · 物理学 2018-06-13 Axel Schmidt

We reanalyse $\bar p p$ and $pp$ high energy data of the elastic scattering above $\sqrt{s}=5$ GeV on the total cross-section $\sigma_{tot}$ and on the forward $\rho$-ratio for various models of Pomeron, utilizing two methods. The first one…

高能物理 - 唯象学 · 物理学 2009-10-30 P. Desgrolard , M. Giffon , E. S. Martynov

The TOTEM experiment at the LHC has performed the first measurement at $\sqrt{s} = 13$ TeV of the $\rho$ parameter, the real to imaginary ratio of the nuclear elastic scattering amplitude at $t=0$, obtaining the following results: $\rho =…

Elastic lepton scattering off of a nucleon has proved to be an efficient tool to study the structure of the hadron. Modern cross section and asymmetry measurements at Jefferson Lab require effects beyond the leading order Born approximation…

高能物理 - 唯象学 · 物理学 2018-07-18 Oleksandr Koshchii , Andrei Afanasev

We evaluate the possible deviation (from the conventional Cahn's result) of the phase between the one-photon-exchange and the `nuclear' high energy $pp$ scattering amplitudes in a small $t\to 0$ region caused by a more complicated (not just…

高能物理 - 唯象学 · 物理学 2020-10-08 P. Grafstrom , M. G. Ryskin

The quadruple perovskite CaMn$_7$O$_{12}$ is a topical multiferroic, in which the hierarchy of electronic correlations driving structural distortions, modulated magnetism, and orbital order is not well known and may vary with temperature.…

材料科学 · 物理学 2020-06-30 K. Gautam , S. S. Majid , S. Francoual , A. Ahad , K. Dey , M. C. Rahn , R. Sankar , F. C. Chou , D. K. Shukla

A model for elastic scattering of protons at high energies based on the quark-diquark representation of the proton is discussed. The predictions of the model are compared with experimental data for the differential elastic cross-sections…

高能物理 - 唯象学 · 物理学 2015-06-12 V. M. Grichine , N. I. Starkov , N. P. Zotov

A method is described for dealing with effective theories of hadron scattering. It allows one to reduce the number of independent renormalization prescriptions in those theories and gives a possibility to make numerical predictions. As an…

高能物理 - 唯象学 · 物理学 2007-05-23 A. Vereshagin

The existing experimental data are examined under different assumptions about the structure of the scattering amplitude of the proton-proton and proton-antiproton elastic scattering at high energy to obtain the value of rho(s,t), the ratio…

高能物理 - 唯象学 · 物理学 2011-02-28 O. V. Selyugin
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