scholarly journals Detailed Calculation of the Screening Constant by Unit Nuclear Charge Relative to the Ground State of Two-electron Atomic Systems

2018 ◽  
pp. 325-333
Keyword(s):  
Ground State ◽  
Nuclear Charge ◽  
Detailed Calculation ◽  
Screening Constant ◽  
Atomic Systems

scholarly journals Effect of Fano Resonance in photovoltaic

2014 ◽  
Vol 2 (1) ◽  
Author(s):  
Dong Sun
Keyword(s):  
Ground State ◽  
Fano Resonance ◽  
Coupling Parameter ◽  
Level System ◽  
Decay Channels ◽  
Atomic Systems ◽  
Absorption And Emission ◽  
Fano Interference ◽  
Detail Balance ◽  
Ground State Doublet

AbstractWe have shown that the Fano interference in the decay channels of a three-level system can lead to considerably different absorption and emission profiles. We found that a coherence can be built up in the ground state doublet, with strength depending on a coupling parameter that arises from the Fano interference. The coherence can in principle lead to breaking of the detail balance between the absorption and emission processes in atomic systems.

scholarly journals Ground state for two-electron and electron-muon three-body atomic systems

2009 ◽  
pp. NA-NA ◽  
Author(s):  
K. V. Rodriguez ◽  
L. U. Ancarani ◽  
G. Gasaneo ◽  
D. M. Mitnik
Keyword(s):  
Ground State ◽  
Atomic Systems ◽  
Three Body

SCREENING CONSTANT BY UNIT NUCLEAR CHARGE CALCULATIONS OF THE RYDBERG SERIES FROM METASTABLE STATE OF CALCIUM ION

2021 ◽  
Vol 9 (07) ◽  
pp. 227-236
Author(s):  
Malick Sow ◽  
◽  
Papa Amadou L. Diagne ◽  
Fatou Ndoye ◽  
Momar T. Gning ◽  
...  
Keyword(s):  
Experimental Data ◽  
Metastable State ◽  
Calcium Ion ◽  
Nuclear Charge ◽  
Theoretical Studies ◽  
Accurate Data ◽  
Rydberg Series ◽  
Screening Constant ◽  
Charge Calculations

We report in this paper energy positions of Rydberg series from metastable state of Ca3+ ion.. Calculations are performed up to n = 20 using the Screening Constant by Unit Nuclear Charge (SCUNC). The present results compared wellwith the experimental data of Ghassan A Alna’washi which are the only available values.The accurate data presented in this work may be a useful guideline for future experimental and other theoretical studies.

Critical examination of isotope shift and fine structure measurements for optical transitions in 6,7LiThis paper was presented at the International Conference on Precision Physics of Simple Atomic Systems, held at University of Windsor, Windsor, Ontario, Canada on 21–26 July 2008.

2009 ◽  
Vol 87 (7) ◽  
pp. 807-815 ◽  
Author(s):  
George A. Noble ◽  
William A. van Wijngaarden
Keyword(s):  
Fine Structure ◽  
Charge Radius ◽  
Isotope Shift ◽  
Nuclear Charge ◽  
Theoretical Estimate ◽  
Nuclear Charge Radius ◽  
Critical Examination ◽  
Mean Square ◽  
Atomic Systems ◽  
The Difference

Precise isotope shift and fine structure measurements are critically reviewed. Each experiment was checked for whether the data found for different transitions yielded consistent values for the difference in mean-square nuclear charge radius Δr2 of 6,7Li. Experiments that passed this test found Δr2 = 0.735 ± 0.036, 0.755 ± 0.023, and 0.739 ± 0.013 fm2 by studying the Li+ 1s2s 3S→1s2p 3P transition, the Li D lines and the Li 2S1/2→3S1/2 transition, respectively. These data determine the difference in mean-square nuclear charge radius 25 times more accurately than electron scattering. Similarly, averaging the fine structure data from the same experiments gives 62 678.75 ± 0.55 MHz for the 7Li+ 1s2p 3P1–2 interval, in good agreement with theory. The results for the 6,7Li 2P fine structure intervals, 10 0.52.954 ± 0.049 and 10 053.154 ± 0.040 MHz, exceed computed values by 2 MHz and yield a splitting isotope shift, which is nearly a factor of 2 lower than a theoretical estimate.

scholarly journals The particle moves on a doughnut Nuclear Charge Radius Differences of 15N -14N and 18O-16O

1971 ◽  
Vol 26 (12) ◽  
pp. 2070-2071 ◽  
Author(s):  
W. Schütz ◽  
H. Theissen ◽  
K. H. Schmidt ◽  
H. Frank
Keyword(s):  
Electron Scattering ◽  
Ground State ◽  
Charge Radius ◽  
Nuclear Charge ◽  
Low Energy ◽  
Nuclear Charge Radius ◽  
Elastic Electron ◽  
Elastic Electron Scattering ◽  
Charge Radii ◽  
Relative Differences

The relative differences of the rms ground state nuclear charge radii of 15N -14N and 18O -16O have been measured by low energy elastic electron scattering to be (1.3 + 0.7)% and (2.4 + 0.6)%, respectively. Both values are less than those following from an A1/3 dependence

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