78 research outputs found
Influence of the ion core on relaxation processes in dense plasmas
The effect of an ionic core on the temperature relaxation in dense hot plasma
of beryllium is studied using the pseudpotential model by Gericke et al [Phys.
Rev. E 2010, 81, 065401(R)]. Employing the screened version of the ion
pseudpotential [by Ramazanov et al, Phys. Plasmas 2021, 28 (9), 092702], we
computed the quantum transport cross-section for the electron-ion collisions in
dense beryllium plamsas, where screening is taking into account using the
density response function in the long wavelength regime. The results for the
transport cross-section are used to compute a generalised Coulomb logarithm and
electron-ion collision frequency. Utilizing the latter, we show the effect of
the ionic core on the temperature relaxation. To understand the role of the
ionic core, we compare the results with the data computed considering ions as
point-like charges
Dynamical correlations and collective excitations of Yukawa liquids
In dusty (complex) plasmas, containing mesoscopic charged grains, the
grain-grain interaction in many cases can be well described through a Yukawa
potential. In this Review we summarize the basics of the computational and
theoretical approaches capable of describing many-particle Yukawa systems in
the liquid and solid phases and discuss the properties of the dynamical density
and current correlation spectra of three- and two-dimensional strongly coupled
Yukawa systems, generated by molecular dynamics simulations. We show details of
the dispersion relations for the collective excitations in these
systems, as obtained theoretically following the quasilocalized charge
approximation, as well as from the fluctuation spectra created by simulations.
The theoretical and simulation results are also compared with those obtained in
complex plasma experiments.Comment: 54 pages, 31 figure
The Low CO2-Inducible 36-Kilodalton Protein Is Localized to the Chloroplast Envelope of Chlamydomonas reinhardtii.
The localization of the 36-kD polypeptide of Chlamydomonas reinhardtii induced by photoautotrophic growth on low CO2 concentrations (0.03% in air [v/v], low CO2-grown cells) has been investigated. This polypeptide was specifically localized to the chloroplast envelope membranes isolated from low CO2-grown cells and was not present in the chloroplast envelopes isolated from high (5% CO2 in air [v/v]) CO2-grown cells. The 36-kD protein does not show carbonic anhydrase activity and was not present on the plasma membranes isolated from low CO2-grown cells. This protein may, in part, account for the different inorganic carbon uptake characteristics observed in chloroplasts isolated from high and low CO2-grown cells of C. reinhardtii
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