Diffusion Model of Methane Hydrate Formation in “Dry Water”

Russian Journal of Physical Chemistry A - The kinetics of methane hydrate formation in “dry water” is studied using a diffusion model (the well-known modified shrinking core model). An...     

Minimal Contact Circuits for Symmetric Threshold Functions

Mathematical Notes - For the monotone symmetric threshold Boolean functions $$ f^n_2(\widetilde x\mspace{2mu})=\bigvee_{1\le i     

Maps with Prescribed Boardman Singularities

Doklady Mathematics - In this paper we extend Y. Eliashberg’s theorem on the maps with fold type singularities to arbitrary Thom-Boardman singularities. Namely, we state a necessary and...     

New Cases of Integrable Odd-Order Systems with Dissipation

Doklady Mathematics - This paper shows the integrability of certain classes of odd-order dynamical systems that are homogeneous with respect to some of the variables and in which a system on the...     

HILITE—A tool to investigate interactions of matter and light

Detailed investigations of laser–ion interactions require well-defined ion targets and detection techniques for high-sensitivity measurements of reaction educts and products. To this end, we have designed and built the High-Intensity Laser-Ion Trap Experiment Penning trap setup, which features various ion-target preparation techniques including selection, cooling, compression, and positioning as well as destructive and non-destructive measurement techniques to determine the number of stored ions for all charge states individually and simultaneously. We have recently performed first commissioning experiments of ion deceleration and dynamic ion capture with highly charged ion bunches from an electron beam ion source. We have characterized our single-pass non-destructive ion counter in detail and were able to determine the ion velocity as well as the number of ions from the signals acquired.     

Conditions for the Occurrence of Spontaneous Oscillating Magnetic Relaxation in Synthetic Pt/Co/Ir/Co/Pt Ferrimagnets

Physics of the Solid State - It has been established that nonmonotonic magnetization relaxation in Pt/Co/Ir/Co/Pt synthetic ferrimagnets (SF) with perpendicular magnetic anisotropy is caused by the...     

Structural Transformations of Ni1 – xCuxFe2O4 Nanoparticles Depending on the Number of Cu Ions

Physics of the Solid State - Changes in the structure and properties of the Ni1 – xCuxFe2O4 ferrites-spinel magnetic nanoparticles depending on the Cu ion concentration (0...