Adiabatic beam dynamics in a modified betatron

Ion Resonance Instability in a Modified Betatron Accelerator

The Use of Betatron Gamma-beam for Digital Radiographic Technique

The problem of creation of the most effective high intensity x-ray radiation sources for a digital diagnostics in medicine and other fields remains actual till now. In the work, experimental results on design of digital radiographic set-up based on the betatron MB-6 bremsstrahlung source are presented. Betatron has the following parameters: electron energy is 6 MeV, beam current is 100 nA, freq...

Dynamics of Adiabatic Shear

The formation of adiabatic shear bands is examined with an approximate analytic model. The shear band is viewed as a propagating feature with a well-defined front. The shear band is further partition into a shear-band process zone within which most of the adiabatic heating and shear stress relaxation occurs, followed by a quasisteady zone within which little dissipation occurs. Although a one-d...

Non-adiabatic ab initio molecular dynamics of supersonic beam epitaxy of silicon carbide at room temperature.

In this work, we investigate the processes leading to the room-temperature growth of silicon carbide thin films by supersonic molecular beam epitaxy technique. We present experimental data showing that the collision of fullerene on a silicon surface induces strong chemical-physical perturbations and, for sufficient velocity, disruption of molecular bonds, and cage breaking with formation of nan...

Multisurface Adiabatic Reactive Molecular Dynamics.

Adiabatic reactive molecular dynamics (ARMD) simulation method is a surface-crossing algorithm for modeling chemical reactions in classical molecular dynamics simulations using empirical force fields. As the ARMD Hamiltonian is time dependent during crossing, it allows only approximate energy conservation. In the current work, the range of applicability of conventional ARMD is explored, and a n...