نتایج جستجو برای: soft ground tunneling
تعداد نتایج: 286747 فیلتر نتایج به سال:
Using time-dependent density functional theory (TDDFT) calculations, we compare tunneling ionization of the a 4F ground state and the a 6D first excited state of vanadium in laser fields of intensities between 1.4 and 4.0 × 1013 W cm−2. The calculated ionization yields of the ground state of vanadium were already shown to agree well with experimental results [Chu and Groenenboom, Phys. Rev. A 9...
Shield tunneling is widely used in urban subway tunnel construction. Old underground pipelines generally have small leakages that are difficult to find. The water leakage significantly reduces the stability of stratum, posing a threat safety shield Therefore, this study established 2D and 3D calculation models for analyzing law diffusion ground under pressure, influences pipeline range length o...
C60(2-) and C70(2-) dianions have been produced by electrospray of the monoanions and subsequent electron pickup in a Na vapor cell. The dianions were stored in an electrostatic ring and their decay by electron emission was measured up to 1 s after injection. While C70(2-) ions are stable on this time scale, except for a small fraction of the ions which have been excited by gas collisions, most...
In this paper, we study the Hawking radiation of Dirac particles via tunneling formalism from linearly supertranslated Schwarzschild black hole. We find that spectrum and temperature remain same as one without soft hair. extend analysis to Vaidya hole can not tunnel through horizon inside. further comment on validity in dynamical
The edge states and optical transition energies in carbon nanoribbons are investigated with density-functional calculations. While the ground state of zigzag ribbons is spin polarized, defects at the edges destroy spin polarization and lead to a nonmagnetic ground state. Scanning tunneling spectroscopy will thus show different features depending on edge quality. Optical transition energies in n...
We show that vortices, induced in cold atom superfluids in optical lattices, may order in a novel vortex-Peierls ground state. In such a state vortices do not form a simple lattice but arrange themselves in clusters, within which the vortices are partially delocalized, tunneling between classically degenerate configurations. We demonstrate that this exotic quantum many-body state is selected by...
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