نتایج جستجو برای: non equilibrium electron energy
تعداد نتایج: 2246458 فیلتر نتایج به سال:
This is the first in a series of two articles, the second of which provides an exact electro-magnetic field description of photon emission, absorption, and radiation pattern. Photon energy exchanges are analyzed and shown to be the triggered, regenerative response of a non-local eigenstate electron. This first article presents a model-based, hidden variable analysis of quantum theory that provi...
A 5 – 30 kHz, high voltage atmospheric pressure discharge device is being investigated as an excitation source for atomic emission spectroscopy. Electron excitation energy and molecular rotational temperature of nitrogen have been measured in this plasma at voltages of approximately 2 kV and average power levels of 130 300 Watts with a 2 mm gap between electrodes. Iron and titanium lines have b...
Abstract The energy and properties of a many-electron atom or molecule may be directly computed from a variational optimization of a two-electron reduced density matrix (2-RDM) that is constrained to represent many-electron quantum systems. In this paper we implement a variational 2-RDM method with a representability constraint, known as the T2 condition. The optimization of the 2-RDM is perfor...
One of the challenges in many-body physics is determining effects phonons on strongly correlated electrons. The difficulty arises from strong correlations at differing energy scales---for band metals, Migdal-Eliashberg theory accurately determines electron-phonon coupling due to absence vertex corrections, but electrons require a more complex description, and standard approach does not necessar...
A fully relativistic/QED theory of particle motion damping by light pressure of an isotropic, in particular relic, radiation yields analytic results for the momentum decay of an electron over entire span of energies in the Universe. Using a Fokker-Planck-like equation, the evolution of initial extremely-high-T electron distribution to low-energy spectral line is analytically obtained for moment...
A low energy non-neutral electron plasma was confined with a magnetic mirror field and an electrostatic potential to investigate the basic confinement properties of a simple magnetic mirror trap. The mirror ratio of the magnetic field was increased up to 5. As expected the confinement time became longer as a function of the mirror ratio. The axially integrated radial density profiles in equilib...
XMM-Newton observations of the O supergiant ζ Orionis (O9.7 Ib) extend knowledge of its high-resolution spectrum beyond the C line at 33.7Å and suggest a new framework for the interpretation of the X-ray spectra of single hot stars. All the lines are broad and asymmetric with similar velocity profiles. X-rays probably originate in the wind's terminal velocity regime in collisionless shocks c...
Observation of non-equilibrium optical phonons population associated with electron transport in THz quantum cascade lasers is reported. The phonon occupation number was measured by using a combination of micro-probe photoluminescence and Stokes/Anti-Stokes Raman spectroscopy. Energy balance analysis allows us to estimate the phonon relaxation rate, that superlinearly increases with the electric...
An approach which allows to include the corrections from non-orthogonality of electron states in contacts and quantum dots is developed. Comparison of the energy levels and charge distributions of electrons in 1D quantum dot (QD) in equilibrium, obtained within orthogonal (OR) and non-orthogonal representations (NOR), with the exact ones shows that the NOR provides a considerable improvement, f...
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