搜索结果: 1-15 共查到“物理学 ionization”相关记录30条 . 查询时间(0.263 秒)
Ionization-induced asymmetric self-phase modulation and universal modulational instability in gas-filled hollow-core photonic crystal fibers
Ionization-induced asymmetric self-phase modulation universal modulational instability gas-filled hollow-core photonic crystal fibers Optics
2012/4/20
We study theoretically the propagation of relatively long pulses with ionizing intensities in a hollow-core photonic crystal fiber filled with a Raman-inactive gas. Due to photoionization, previously ...
Uniqueness theorem for the non-local ionization source in glow discharge and hollow cathode
integro-differential operator the Fredholm 2-nd kind equation existence and uniqueness theorem nilpotency glow discharge
2012/4/19
The paper is devoted to the proof of the uniqueness theorem for solution of the equation for the non-local ionization source in a glow discharge and a hollow cathode in general 3D geometry. The theore...
Logical Construction of the Ionization Energy Theory and the Origin of Physical Categories
Logical Construction the Ionization Energy Theory the Origin of Physical Categories General Physics
2012/5/31
Logical proofs and definitions are developed to establish (i) the energy-level spacings, \xi for each chemical element (from the periodic table of chemical elements) can be converted to the ionization...
Causality and quantum interference in time-delayed laser-induced nonsequential double ionization
Causality quantum interference time-delayed laser-induced nonsequential double ionization
2011/8/5
Abstract: We perform a detailed analysis of the importance of causality within the strong-field approximation and the steepest descent framework for the recollision-excitation with subsequent tunnelin...
Effect of a plasma grating on pump-probe experiments near the ionization threshold in gases
plasma pump-probe experiments ionization threshold gases
2011/8/4
Abstract: Calculations are performed of the phase shift caused by the spatial modulation in the plasma density due to interference between a strong pump pulse and a weak probe pulse. It is suggested t...
Mechanism of delayed double ionization in a strong laser field
Centre de Physique Theoriqu Georgia Institute of Technology
2011/8/4
Abstract: When intense laser pulses release correlated electrons, the time delay between the ionizations may last more than one laser cycle. We show that this "Recollision-Excitation with Subsequent I...
Multiphoton Rabi Oscillations of Correlated Electrons in Strong Field Nonsequential Double Ionization
Multiphoton Rabi Oscillations Correlated Electrons Field Nonsequential Double Ionization
2011/8/3
Abstract: With quantum calculations, we have investigated the multiphoton nonsequential double ionization of helium atoms in intense laser fields at ultraviolet wavelengths. Very surprisingly, we find...
Assessment of hydrocarbon electron-impact ionization cross section measurements for magnetic fusion
electron-impact ionization cross section magnetic fusion
2011/9/9
Partial ionization cross section experiments have been carried out recently at the University of Innsbruck for three types of hydrocarbons, i.e. acetylene, ethylene and propene. Cross section data ts...
Molecular imaging using high-order harmonic generation and above-threshold ionization
above-threshold high-order harmonic
2011/9/1
Accurate molecular imaging via high-order harmonic generation relies on comparing the harmonic emission from a molecule and an adequate reference system. However, an ideal reference atom with the same...
Controlling double ionization of atoms in intense bichromatic laser pulses
ionization atoms intense bichromatic laser pulses
2010/11/17
We consider the classical dynamics of a two-electron system subjected to an intense bichromatic linearly polarized laser pulse. By varying the parameters of the field, such as the phase lag and the r...
Wavelength and intensity dependence of multiple forward scattering at above-threshold ionization in mid-infrared strong laser fields
Wavelength intensity forward scattering above-threshold ionization
2010/11/16
The nonperturbative role of multiple forward scattering for Coulomb focusing in mid-infrared laser fields and its dependence on a laser intensity and wavelength are investigated for low-energy photoe...
Higher-order Kerr terms allow ionization-free filamentation in gases
Higher-order Kerr ionization-free filamentation gases
2010/11/16
We show that higher-order nonlinear indices ($n_4$, $n_6$, $n_8$, $n_{10}$) provide the main defocusing contribution to self-channeling of ultrashort laser pulses in air and Argon at 800 nm, in contr...
Prevalence of different double ionization pathways and traces of three-body collisions in strongly driven Helium
double ionization three-body collisions driven Helium
2010/11/16
We present a unified treatment of the prevalence of different double ionization (DI) pathways as a function of the sum of the final electron energies in strongly driven Helium. We do so as a function...
Atomic Ionization by keV-scale Pseudoscalar Dark Matter Particles
Atomic Ionization keV-scale Pseudoscalar Dark Matter Particles
2010/3/16
Using the relativistic Hartree-Fock approximation, we calculate the rates of atomic ionization by absorption of pseudoscalar particles in the mass range from 10 to $\sim$ 50 keV. We present numerical ...
Design and construction of the first prototype ionization chamber for CSNS and PA beam loss monitor (BLM) system
spallation neutron source proton accelerator beam loss monitor ionization chamber plateau curve linearity
2009/8/14
Design and construction of the first prototype ionization chamber for CSNS and Proton Accelerator (PA) beam loss monitor (BLM) system is reported. The low leakage current (<0.1 pA), good plateau (≈800...