12,152 research outputs found
Quantum-mechanical simulation of attosecond streaked photoemission from Mg-covered W(110) surfaces
Citation: Liao, Q., & Thumm, U. (2015). Quantum-mechanical simulation of attosecond streaked photoemission from Mg-covered W(110) surfaces. 635(10). doi:10.1088/1742-6596/635/10/102002We apply a quantum-mechanical model to simulate infrared-streaked photoelectron emission by an ultrashort extreme ultraviolet pulse from adsorbate-covered metal surfaces. Incorporating effects of energy- dependent electron mean-free paths, the properties of initial states, photoelectron energy dispersion, and the screening of the streaking field, this model is able to reproduce recently measured photoelectron spectrograms and adsorbate-thickness-dependent photoemission time delays. © Published under licence by IOP Publishing Ltd
Multi-period Corporate Short-term Credit Risk Assessment - A State-Dependent Stochastic Liquidity Balance Model
Interaction of cosmic background neutrinos with matter of periodic structure
We study coherent interaction of cosmic background neutrinos(CBNs) with
matter of periodic structure. The mixing and small masses of neutrinos
discovered in neutrino oscillation experiments indicate that CBNs which have
very low energy today should be in mass states and can transform from one mass
state to another in interaction with electrons in matter. We show that in a
coherent scattering process a periodic matter structure designed to match the
scale of the mass square difference of neutrinos can enhance the conversion of
CBNs from one mass state to another. Energy of CBNs can be released in this
scattering process and momentum transfer from CBNs to electrons in target
matter can be obtained.Comment: 6 pages, 5 figures, publication versio
Statistical properties of solutions to the Navier-Stokes equation in the limit of vanishing viscosity
Presents a new approach to the Navier-Stokes turbulence. With the Gaussian soft constraint on the Navier-Stokes equation, the author derives the energy spectrum to be E(k) approximately k^-3 and k^-2 in two and three spatial dimensions respectively. The possible future developments are also pointed out
Catastrophe and hope : the politics of the ancient capital and The city where the blood-red bat descended
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