Excitation energies and transition probabilities for the forbidden transitions of helium-like ions

1985 ◽  
Vol 298 ◽  
pp. 844 ◽  
Author(s):  
B. Kundu ◽  
P. K. Mukherjee
Keyword(s):  
Transition Probabilities ◽  
Excitation Energies ◽  
Forbidden Transitions

SHAPE EVOLUTION OF 96ZR AND 96MО WITH EXCITATION ENERGY INCREASE

2019 ◽  
pp. 37-41
Author(s):  
M.A. Mardyban ◽  
D.A. Sazonov ◽  
E.A. Kolganova ◽  
R.V. Jolos
Keyword(s):  
Potential Energy ◽  
Excitation Energy ◽  
Transition Probabilities ◽  
Collective Excitations ◽  
Nuclear Model ◽  
Shape Evolution ◽  
Energy Increase ◽  
Excitation Energies ◽  
Satisfactory Description

The observed properties of the low-lying collective excitations of 96Zr and 96Mo are investigated in the framework of the collective quadrupole nuclear model with the Bohr Hamiltonian, whose potential energy has two minima – spherical and deformed. Satisfactory description of the excitation energies and E2 transition probabilities is obtained. It is shown that in the case of 96Zr both minima are sufficiently deep. However, in the case of 96Mo a deformed minimum is only outlined.

X-Ray Fluorescence Cross-Section Measurements in the Energy Range 4-18 keV

1995 ◽  
Vol 39 ◽  
pp. 845-855
Author(s):  
Krassimir N. Stoev ◽  
Joseph F. Dlouhy
Keyword(s):  
Cross Sections ◽  
Transition Probabilities ◽  
Weighted Average ◽  
Physical Parameters ◽  
Emission Rates ◽  
Excitation Energies ◽  
X Ray ◽  
Fluorescence Cross Section ◽  
Theoretical Results

K, L and M shell x-ray fluorescence cross sections have been measured for elements 11 ≤, Z ≤, 92 at excitation energies corresponding to weighted average energies of K-lines of Ti-K (4.558 keV), Fe-K (6,480 keV), Ge-K (10.024 keV), Se-K (11.391 keV) and Mo-K (17.805 keV) . The measurements were performed with an energy-dispersive x-ray spectrometer in a vacuum chamber using thin ultra-pure targets. Rh x-ray tube and secondary targets were used for excitation of x-ray radiation. The measured x-ray fluorescence cross-sections have been compared to previously published experimental and theoretical results. Presented data can be used for determination of physical parameters such as photoionization cross-sections, fluorescence yields, x-ray emission rates, Coster-Kronig transition probabilities and jump ratios.

Atomic structure and radiative properties of He-like Ni26+ ion in dense plasma

2021 ◽  
Author(s):  
Mayank Dimri ◽  
Dishu Dawra ◽  
A.K. Singh ◽  
Alok K.S. Jha ◽  
Rakesh Kumar Pandey ◽  
...  
Keyword(s):  
Quantum Number ◽  
Transition Probabilities ◽  
Principal Quantum Number ◽  
Model Potential ◽  
Oscillator Strengths ◽  
Radiative Properties ◽  
Configuration Interaction Method ◽  
Excitation Energies ◽  
Plasma Energy ◽  
Plasma Background

The influence of plasma screening on the excitation energies and transition properties of He-like Ni<sup>26+</sup> ion under strongly coupled plasma background has been analyzed. To perform the analysis, the multiconfiguration Dirac-Fock method has been adopted by incorporating the ion sphere model potential as a modified interaction potential between the electron and the nucleus. For comparison purposes, parallel calculations have been carried out using the modified relativistic configuration interaction method. It is found that the plasma energy shifts corresponding to principal quantum number conserving transitions (Δ n = 0) are blue shifted, whereas red shifted for the transitions where the principal quantum number is not conserved (Δn ≠ 0). The variation of transition probabilities and weighted oscillator strengths with free electron densities has also been studied. The present results should be advantageous in the modeling and diagnostics of astrophysical and laboratory plasmas.

scholarly journals Giant modification of atomic transition probabilities induced by a magnetic field: forbidden transitions become predominant

2014 ◽  
Vol 11 (5) ◽  
pp. 055701 ◽  
Author(s):  
Armen Sargsyan ◽  
Ara Tonoyan ◽  
Grant Hakhumyan ◽  
Aram Papoyan ◽  
Emilio Mariotti ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Transition Probabilities ◽  
Atomic Transition ◽  
Forbidden Transitions

scholarly journals Electric quadrupole (E2) and magnetic dipole (M1) transitions for doubly and triply ionized krypton, xenon, and radon

2019 ◽  
Vol 97 (5) ◽  
pp. 529-536
Author(s):  
Selda Eser ◽  
Leyla Özdemir
Keyword(s):  
Magnetic Dipole ◽  
Atomic Structure ◽  
Ground State ◽  
Transition Probabilities ◽  
Electric Quadrupole ◽  
General Purpose ◽  
Oscillator Strengths ◽  
Ground State Configuration ◽  
Forbidden Transitions ◽  
State Configuration

We have reported the wavelengths, transition probabilities (or rates), oscillator strengths, and line strengths for forbidden transitions (electric quadrupole, E2, and magnetic dipole, M1) in doubly and triply ionized krypton, xenon, and radon using the general-purpose relativistic atomic structure package (GRASP). The results obtained from transitions between the levels of ground state configuration are in agreement with other available results in the literature. The data on forbidden transitions between high levels for these ions have been firstly presented in this work.

A relativistic CI study on OIII: wavefunctions, excitation energies and transition probabilities

1993 ◽  
Vol 27 (1) ◽  
pp. 17-27 ◽  
Author(s):  
P. Marketos ◽  
Irene Zambetaki ◽  
M. Kleidis
Keyword(s):  
Transition Probabilities ◽  
Excitation Energies

Calculation of Wavelengths, Transition Probabilities and Oscillator Strengths for E1 and M1 Transitions in Cu-Like Au Ion

2015 ◽  
Vol 723 ◽  
pp. 799-803
Author(s):  
Min Xu
Keyword(s):  
Excited States ◽  
Magnetic Dipole ◽  
Configuration Interaction ◽  
Electric Dipole ◽  
Transition Probabilities ◽  
Energy Levels ◽  
Oscillator Strengths ◽  
Forbidden Transitions ◽  
Calculation Results ◽  
Good Agreement

Wavelengths, transition probabilities and oscillator strengths have been calculated for electric dipole (E1) transitions and magnetic dipole (M1) transitions in Cu-like Au ion. These values are obtained in the configuration interaction (CI) and using the fully relativistic multiconfiguration Dirac-Fock (MCDF) method including quantum electrodynamical (QED) effect and Breit correction. Obtained energy levels of some excited states in Cu-like Au ion from the method are generally in good agreement with valuable theoretical and experimental results. The calculation results indicate that for high-Z highly ionized atom, some forbidden transitions are very important.

AN ALLEGED DISTORTED ROTATION

1996 ◽  
Vol 05 (03) ◽  
pp. 497-510
Author(s):  
ROLAND NOJAROV
Keyword(s):  
Excited States ◽  
High Frequency ◽  
Transition Probabilities ◽  
Canonical Quantization ◽  
Dipole Model ◽  
Excitation Energies ◽  
High Frequency Modes

The Giant Angle Dipole model describes a contrarotational (scissors) motion with superimposed deformation distortions. They cause changes in the mass and stiffness parameters and the physical observables (excitation energies and transition probabilities) corresponding to undistorted scissors motion. It is shown here that the observables, derived in this model using normalized excited states, coincide with the predictions for the low- and high-frequency modes with [Formula: see text] and 2, obtained by a recent canonical quantization of the isovector rotor, where no deformation distortions are assumed.

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