Photodissociation dynamics via a rovibrational resonance in intense UV pulses is investigated theoretically, using showcase ${\text{CH}}^{+}$ molecule promoted to the $\text{C}\phantom{\rule{0.16em}{0ex}}^{1}\mathrm{\ensuremath{\Sigma}}^{+}$ valence excited electronic state with potential barrier, thus giving access study shape controlled by pulse frequency. Simulations of kinetic energy releas...

We analyze a system of two qubits embedded in two different environments. The qubits are coupled to each other and driven on-resonance by two external classical sources. In the secular limit, we obtain exact analytical results for the evolution of the system for several classes of two-qubit mixed initial states. For Werner states we show that the decay of entanglement does not depend on couplin...

Mexican-hat dispersion of band electrons in two-dimensional materials attracts a lot interest, mainly due to the Van Hove singularity density states near edge. In this paper, we show that there is one more feature such dispersion, which also leads nontrivial effects. It consists fact sign effective mass momentum space central extremum opposite outside region. For reason, any localized potential...

The vacuum ultraviolet laser-excited photoion-pair formation spectrum of CH 3Br has been measured under high resolution in the threshold region. The (2 + 1) and (3 + 1) resonance-enhanced multiphoton ionization spectra in the same energy region are also reported. By comparison of the spectra in this and a more extended region, resonances in the photoion-pair formation spectrum are assigned to p...

In this article the influence of welding parameters such as electrical current, feed rate and stick out on crack growth energy was investigated. Therefore, prepared specimens were welded in various conditions. Using the Minitab software, 18 states of 36 possible states were chosen and applied. Then a crack was crated on the weld metal and the force-displacement diagram was plotted. Comparison o...

We demonstrate that image states provide an important channel for electron transfer between an atom and a surface, especially for the excited states with comparable binding energy to that of the image states. This new channel substantially enhances the tunneling rate for, as an example, H ? on Al(111) and Cu(111), and is resonant with the (n=3) atomic level at a large separation. Such a resonan...

First-principle calculations were carried out to investigate the adsorption of CO over Cun nanoclusters. The structural, spectroscopic and electronic properties like optimized geometries, HOMO (highest occupied molecular orbital) and LUMO (lowest unoccupied molecular orbital) energy levels, binding energy, adsorption energy, vibrational frequency and density of states (DOSs) of the p...

The effect of impurities on quantum chemical parameters of single-walled nanotubes (SWNTs) was studied using density functional theory (DFT). The density of states (DOS), Fermi energy and thermodynamic energies of (5,5) carbon nanotubes were calculated in the presence of nitrogen impurity. It was found that this nanotube remains metallic after being doped with one nitrogen atom. The partial den...

Atomic collapse in graphene nanoribbons behaves a fundamentally different way as compared to monolayer graphene, due the presence of multiple energy bands and effect edges. For armchair we find that bound states gradually transform into atomic with increasing impurity charge. This is very zig-zag where quasi-one-dimensional \emph{bound states} are found originates from zero edge states. They co...