Results 1 to 10 of about 1,036,661 (329)

Diagrammatic treatment of coherent backscattering of intense light by cold atoms with degenerate energy levels [PDF]

open access: greenPhysical Review A, 2014
We present a generalization of the diagrammatic pump-probe approach to coherent backscattering (CBS) of intense laser light for atoms with degenerate energy levels. We employ this approach for a characterization of the double-scattering signal from optically pumped atoms with the transition ${J}_{g}\ensuremath{\rightarrow}{J}_{e}={J}_{g}+1$ in the ...
Vyacheslav Shatokhin   +3 more
core   +8 more sources

Spin–spin relaxation of nuclear quadrupole resonance coherences and the important role of degenerate energy levels [PDF]

open access: hybridMolecular Physics, 2020
We present an extension of a Redfield approach for calculating spin–spin relaxation rates of zero-field nuclear quadrupole resonance (NQR) coherences, which was published in [Kruk et al., PCCP, 201...
Christian Gösweiner   +2 more
semanticscholar   +5 more sources

FROM BLOCH MODEL TO THE RATE EQUATIONS II: THE CASE OF ALMOST DEGENERATE ENERGY LEVELS [PDF]

open access: greenMathematical Models and Methods in Applied Sciences, 2004
Bloch equations give a quantum description of the coupling between atoms and a driving electric force. It is commonly used in optics to describe the interaction of a laser beam with a sample of atoms. In this paper, we address the asymptotics of these equations for a high frequency electric field, in a weak coupling regime.
Brigitte Bidégaray-Fesquet   +3 more
semanticscholar   +11 more sources

Riemann-Hilbert Problem with Higher Order Poles for Self-Induced Transparency with Degenerate Energy Levels [PDF]

open access: bronzeAustralian Journal of Physics, 1988
We have analysed the inverse problem for self-induced transparency with degenerate energy levels (DSIl) via the Riemann-Hilbert methodology with second order poles. The required formulae are deduced in detail and the corresponding soliton solutions are obtained. It is noticed that the profile of the single soliton is not of the usual sech type.
A. Roy Chowdhury, Mrityunjoy De
semanticscholar   +5 more sources

Description of energy levels and decay properties in 158Gd nucleus [PDF]

open access: yesЯдерна фізика та енергетика, 2023
In this paper, IBM-1 and IBM-2 with a SU(3) limit are used to describe the 158Gd isotope. The calculations of energy levels in the ground state, beta-, and gamma-bands are made up, which account for 15 energy levels.
Fahmi Sh. Radhi   +6 more
doaj   +2 more sources

Photoionization of Electrons in Degenerate Energy Level of Hydrogen Atom Induced by Strong Laser Pulses [PDF]

open access: goldPhotonics, 2022
Photoionization dynamics of bounded electrons in the ground state, the first and second excited states of a hydrogen atom, triggered by ultrashort near-infrared laser pulses, have been investigated in a transition regime (γ∼1) that offers both multiphoton and tunneling features.
Peipei Xin   +4 more
openalex   +3 more sources

Calculation of quasidegenerate energy levels of two-electron ions [PDF]

open access: yesPhysical Review A, 2004
22 pages, 11 ...
O. Yu. Andreev   +4 more
openaire   +4 more sources

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