ENERGY LEVELS AND RADIATIVE TRANSITIONS IN MUONIC HYDROGEN

Recently, Chang et. al. (1992) and Carlsson, Rutten and Shchukina (1992) (CRS) demonstrated the non-LTE formation mechanism behind the 12 μm Mg I emission lines (6g–7h, 6h–7i) observed in the solar spectrum (Murcray et. al., 1981). CRS stress the generality of this mechanism showing that it is a natural consequence of the recombination flow from the large Mg II reservoir through the Rydberg levels of Mg I. We have noted the close parallel between Mg I in the solar atmosphere and Mg II in the atmospheres of B stars (where Mg III plays the role of the reservoir) and investigated the operation of this mechanism in high-ℓ infrared transitions of Mg II. We have employed a 58 level Mg II atom including all energy levels through n = 25 and a total of 491 linearized radiative transitions. The coupled equations of radiative transfer and statistical equilibrium were solved with the MULTI code in its local operator form (Carlsson, 1992).

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Influence of semiclassical plasma on the energy levels and radiative transitions in highly charged ions

The European Physical Journal D ◽

10.1140/epjd/e2017-70813-7 ◽

2017 ◽

Vol 71 (11) ◽

Cited By ~ 3

Author(s):

Hong-Wei Hu ◽

Zhan-Bin Chen ◽

Wen-Cong Chen ◽

Xiao-Bin Liu ◽

Nian Fu ◽

...

Keyword(s):

Energy Levels ◽

Highly Charged Ions ◽

Radiative Transitions ◽

Charged Ions

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NUCLEAR RADIATION WIDTHS

Canadian Journal of Physics ◽

10.1139/p57-071 ◽

1957 ◽

Vol 35 (5) ◽

pp. 666-671 ◽

Cited By ~ 56

Author(s):

A. G. W. Cameron

Keyword(s):

Nuclear Energy ◽

Energy Levels ◽

Nuclear Radiation ◽

Heavy Nuclei ◽

Level Spacing ◽

Excitation Energies ◽

Average Deviation ◽

Radiative Transitions ◽

Logarithmic Average ◽

Large Level

The total radiation widths of nuclear energy levels have been computed using the new level spacing formula of T. D. Newton. The only adjustable constant in this calculation is a normalizing factor, which was determined by comparison with observed radiation widths. The logarithmic average deviation of the observed radiation widths from the calculated values is then equal to a factor 1.37. Radiation widths computed for a series of nuclei close to the valley of beta stability at excitation energies corresponding to the energy release in neutron capture are presented. It is found that in heavy nuclei with large level spacings the radiation widths of electric dipole transitions to the ground state can exceed that computed from the above considerations. This accounts for the unusual nature of the radiative transitions in lead.

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Electronic Levels Of Cr2+ Ion Doped In II-VI Compounds Of ZnS – Crystal Field Treatment

Annals of West University of Timisoara - Physics ◽

10.1515/awutp-2015-0014 ◽

2012 ◽

Vol 56 (1) ◽

pp. 94-99

Author(s):

Simona Ivaşcu

Keyword(s):

Experimental Data ◽

Crystal Field ◽

Energy Levels ◽

Electronic States ◽

Spin Hamiltonian ◽

Host Matrix ◽

Absorption And Emission ◽

Radiative Transitions ◽

Impurity Ions ◽

Hamiltonian Parameters

AbstractThe aim of present paper is to report the results on the modeling of the crystal field and spin-Hamiltonian parameters of Cr2+ doped in II-VI host matrix ZnS and simulate the energy levels scheme of such system taken into account the fine interactions entered in the Hamiltonian of the system. All considered types of such interaction are expected to give information on the new peculiarities of the absorption and emission bands, as well as of non-radiative transitions between the electronic states of impurity ions. The obtained results were disscused, compared with similar obtained results in literature and with experimental data.

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Energy levels and radiative transitions of the K-shell excited sextet states in boron-like sulfur ion

Canadian Journal of Physics ◽

10.1139/cjp-2016-0317 ◽

2016 ◽

Vol 94 (10) ◽

pp. 1054-1060 ◽

Cited By ~ 1

Author(s):

Yan Sun ◽

CuiCui Sang ◽

KaiKai Li ◽

XinYu Qian ◽

Feng Hu ◽

...

Keyword(s):

Fine Structure ◽

Relativistic Effect ◽

Transition Probabilities ◽

Theoretical Calculations ◽

Energy Levels ◽

Oscillator Strengths ◽

Variation Method ◽

First Order ◽

Radiative Transitions ◽

First Order Perturbation

Theoretical calculations are reported for energy levels and transition probabilities of the K-shell excited sextet series 6Se,o(m) and 6Po,e(m) (m = 1–7) for the astrophysically important element sulfur. Energy levels, fine structure splittings, and transition parameters of the high-lying sextet series 6Se,o(m) and 6Po,e(m) (m = 1–7) in boron-like sulfur ion are calculated with the multi-configuration Rayleigh–Ritz variation method. To obtain the accurate energy level, the relativistic corrections and mass polarization effect are included by using the first-order perturbation theory. Configuration structures of these sextet series are assigned according to the energies, percentage contributions of basis states to the eigenvector, relativistic effect corrections, and verification of fine structure splittings. The oscillator strengths, transition probabilities, and wavelengths of electric-dipole transitions between 6So,e(m) and 6Pe,o(m) (m = 1–7) states are also systematically calculated and discussed.

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From first principles of QED to an application: hyperfine structure of P states of muonic hydrogenThis paper was presented at the International Conference on Precision Physics of Simple Atomic Systems, held at École de Physique, les Houches, France, 30 May – 4 June, 2010.

Canadian Journal of Physics ◽

10.1139/p10-092 ◽

2011 ◽

Vol 89 (1) ◽

pp. 109-115 ◽

Cited By ~ 3

Author(s):

Ulrich D. Jentschura

Keyword(s):

Hyperfine Structure ◽

Quantum Electrodynamics ◽

Energy Levels ◽

Muonic Hydrogen ◽

Intense Laser ◽

Theoretical Treatment ◽

Intense Laser Fields ◽

Atomic Systems ◽

Atomic Energy Levels ◽

Interesting Area

The purpose of this article is twofold. First, we attempt to give a brief overview of the different application areas of quantum electrodynamics (QED). These include fundamental physics (prediction of atomic energy levels), where the atom may be exposed to additional external fields (hyperfine splitting and g factor). We also mention QED processes in highly intense laser fields and more applied areas like Casimir and Casimir–Polder interactions. Both the unifying aspects as well as the differences in the the theoretical treatment required by these application areas (such as the treatment of infinities) are highlighted. Second, we discuss an application of the formalism in the fundamentally interesting area of the prediction of energy levels, namely, the hyperfine structure of P states of muonic hydrogen.

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Kα transition probabilities of C-like to F-like Al ions

Canadian Journal of Physics ◽

10.1139/cjp-2014-0135 ◽

2015 ◽

Vol 93 (3) ◽

pp. 267-270

Author(s):

Cuicui Sang ◽

Feng Chen ◽

Chao Chen ◽

Bingcong Gou

Keyword(s):

Transition Probabilities ◽

Energy Levels ◽

Emission Spectra ◽

Radiative Transition ◽

Transition Rates ◽

Atomic Structures ◽

Radiative Transitions ◽

Electron Correlation Effects ◽

Reasonable Description ◽

Spectral Intensities

Kα radiative transitions of C-like to F-like Al ions are studied using the multiconfiguration Dirac–Fock (MCDF) method. The fully relativistic MCDF approach was specifically designed to calculate atomic structures and radiative transition rates, and hence it ensures a reasonable description of the emission effects and spectral intensities. The energies and wavefunctions, corresponding mixing coefficients, the influence of electron correlation effects on energy levels, and radiative transition rates for C-like to F-like Al ions are investigated in detail. Good agreement is found between the calculated Kα emission spectra in this work and the spectra from experimental measurements.

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