We describe a particle advance algorithm for particle-in-cell simulation of highly magnetized charged particles that relaxes the time step constraint due to cyclotron motion. The method preserves the correct cyclotron radius for large time steps and corrects for magnetic field gradients without requiring explicit calculation of the particle magnetic moment. Application of the algorithm is illus...

Superparamagnetic nanoparticles (SPIOs) and magnetic microparticles (MPIOs) are used as contrast enhancers in magnetic resonance imaging (MRI) [1, 2]. Compared to nanofabricated contrast agents, micrometer-sized agents can benefit from higher magnetic moments. As a result, susceptibility artifact (hypointense signal) is increased and visibility improves in MR images [3]. Magnetic moment of a mi...

Abstract: as magnetic materials, semiconductors, pigments, catalysts, refractories and electronic ceramics. In this paper, wereported the preparation of NiAlThe resulting powder was chracterized by XRD, particle size analysis and SEM. The XRD patterns show that thecombustion technique was excellent to prepare single – phased cubic NiAlfound to be around 14 nm. From the particle size analysis, i...

It is shown that a charged particle can be trapped in a magnetic neutral sheet produced by the combination of a static magnetic field B 0 and an electromagnetic wave propagating perpendicularly to B0 with its magnetic field component parallel to B0. The neutral sheet as well as the trapped particle moves with the phase velocity ofthe wave and the trapped particle feels a constant force. Once th...

We have investigated and modeled the effect of interaction among magnetic particles and the magnitude and duration of external applied magnetic field on Brownian relaxation in a colloidal suspension. In the case of interacting magnetic particles, Brownian relaxation depends on the interparticle dipole-dipole interaction, which slows down the overall Brownian relaxation process of magnetic parti...

in this paper, we give an analytical approximate solution for an integro- differential equation which describes the charged particle motion for certain configurations of oscillating magnetic fields is considered. the homotopy analysis method (ham) is used for solving this equation. several examples are given to reconfirm the efficiency of these algorithms. the results of applying this procedure...

The locations of features in the Voyager 2 energetic particle data from Neptune are combined with uncertainties n the multipole expansion f the planetary magnetic field to derive new magnetic field models that are consistent both with various interpretations of the particle features and with the magnetic field data. While assumptions as to the origin of the features must be made, they do not pr...

Nowadays nanotechnology as a new direction of science allows us to develop therapeutic methods of the endogenous intoxication syndrome and to create a new class of biocompatible sorbents. In Ukraine first preparations of medical nanotechnology were produced and patented in 1998. These are IKBB (intracorporeal biocorrector), magnet-controlled sorbent (MCS-B), and Micromage-B. The preparations ar...

Kurzfassung. Magnetic Particle Imaging ist ein neues bilgebendes Verfahren zur Darstellung der räumlichen Verteilung von magnetisierbaren Nanopartikeln. In einer Simulationsstudie wurde zuletzt das Auflösungsvermögen und die Sensitivität dieser Methode untersucht. Die Abtasttrajektorie wurde dabei so gewählt, dass der Messbereich deutlich überabgetastet wurde. In dieser Arbeit wird in einer Sim...