Abstract. Laboratory simulations of charging dust grains are a way to understanding the role of dust grains in complex plasma in space as well as in technical applications. Our laboratory experiment von dust particles is based on an electrodynamic quadrupole trap in that we are able to hold a single dust particle for a long time (typically tens of hours) and to study effects induced by charging...

6 It has been hypothesized that the insertion of cation preferential channels into 7 neuronal cell membranes disrupts homeostasis and function leading to 8 Alzheimer’s disease. These channels have been shown to be composed of 9 variable numbers of subunits. The nonhomogenous configuration of these 10 subunits in the channels has introduced difficulties in defining set values of ion 11 conductan...

Electrodynamic responses from three-dimensional topological insulators are characterized by the universal magnetoelectric term constituent of the Lagrangian formalism. The quantized magnetoelectric coupling, which is generally referred to as topological magnetoelectric effect, has been predicted to induce exotic phenomena including the universal low-energy magneto-optical effects. Here we repor...

The hydrohelium cation, HeH(+), serves as an important benchmark for ab initio calculations that take into account non-adiabatic, relativistic, and quantum electrodynamic effects. Such calculations are capable of predicting molecular transitions to an accuracy of ~300 MHz or less. However, in order to continue to push the boundaries on these calculations, new measurements of these transitions a...

We study electron acceleration in a plasma wakefield under the influence of radiation-reaction force caused by transverse betatron oscillations wakefield. Both classical and strong quantum-electrodynamic (QED) limits radiation reaction are considered. For constant accelerating force, we show that amplitude QED parameter $\chi$ radiation-dominated regime reaches equilibrium value determined only...

[1] This paper presents an overview of the recent modeling efforts directed to the interpretation of observed features of transient luminous events termed sprites, blue jets, and gigantic jets. The primary emphasis is placed on interpretation of various emissions documented to date from sprites and comparison of exiting models with recent high‐speed video and satellite‐based observations of spr...

Within the standard model of particle physics and cosmology we have calculated the big-bang prediction for the primordial abundance of Helium to a theoretical uncertainty of 0.1% (δYP = ±0.0002). At this accuracy the uncertainty in the abundance is dominated by the experimental uncertainty in the neutron mean lifetime, τn = 885.3 ± 2.0 sec. The following physical effects were included in the ca...

Very accurate variational calculations with the free iterative-complement-interaction (ICI) method for solving the Schrodinger equation were performed for the 1sNs singlet and triplet excited states of helium atom up to N=24. This is the first extensive applications of the free ICI method to the calculations of excited states to very high levels. We performed the calculations with the fixed-nuc...

Purpose: Patients with many types of common implants, including pacemakers and neurostimulators, are ineligible for MR scans due to the potential for tissue heating arising from RF coupling between the excitation field and their device. The severity of this coupling can be detected by reversing the RF polarization in the birdcage RF receiver. Ideally, this results in MR signal only around coupl...