Radiative ablation to low-Zmatter

Abstract

Eight beams of 0.35-microm laser with pulse duration of about 1.0 ns and energy of 260 J per beam were injected into a cylindrical cavity to generate intense x-ray radiation on the Shengguang II high power laser facility. Plastic foils with a thickness in the range of about 3.0-45 microm were attached on the diagnostic hole of the cavity and ablated by the intense x-ray radiation. The radiative energy transport through plastic foils with different thicknesses has been studied experimentally. The burn-through time of the plastic foils has been obtained. For comparison, we also simulated the experimental results with Planckian and non-Planckian x-ray spectrum source, respectively. It is shown that for thick plastic foil the simulation with non-Planckian x-ray spectrum source is in good agreement with the experiment.

Power-law dependence of the angular momentum transition fields in few-electron quantum dots

“…In particular, the application of a perpendicular magnetic field aids the Wigner crystallization, 5,6 the formation of strongly correlated many-body states 7,8 and induces ground state multiplicity transitions. 9 From the theoretical side, the 'exact' numerical diagonalization method 5,10,11,12,13,14,15,16 is of profound importance as a reference for approximate treatments. With the presently available computing power this approach has been successfully applied to compute the electronic structure of few-electron quantum dots.…”

Novel solid-state synthesis of surfactant- and solvent-free Pd tetrahedron nanocatalysts

“…Previous studies have shown that the favorable deposition of constituent atoms in certain crystal orientations promotes faster directional growth relative to the other facets, thereby enlarging the proportion of slow-growing facets. 39,40 Therefore, adsorption calculations for Pd atoms were carried out to compare the crystal growth capability of each low-index facet under different reduction conditions. A Pd atom was adsorbed onto the Pd surface where either CO or H molecules had already achieved full coverage.…”

Quantum phases of correlated electrons in artificial molecules under magnetic fields

“…For B1 and B2, electrons in the S orbitals undergo a number of transitions where p and d levels are successively populated in order to minimize the Coulomb repulsion. Eventually, the so called maximum density droplet (MDD), 72,73,74,75 i.e., the densest spin-polarized configuration possible, is reached. For B3 this phase is not observed at B = 0 in the range of B ⊥ explored (Fig.…”