Transition Probabilities, Oscillator and Line Strengths in Sc XIX
Abstract
Scandium XIX ion is a member of the isoelectronic sequence of Li-like ions. Numerical coulomb approximation and quantum defect theory have been used to calculate energies, quantum defects & transition probabilities, oscillator, and line strengths of Sc XIX ion for the transitions ns → mp, np → ms, np → md, and nd → mp Rydberg series. The energies of Sc XIXX ions up to n = 5 are given in the NIST database and the literature. We used quantum defect theory and determined the energies and quantum defects up to n = 30. The energies and quantum defects of 125 levels are reported for the first time. Sc XIX ion's transition probabilities, oscillator, and line strengths were compared with the corresponding values in the NIST database of spectral lines. The NIST database contains data of only seventy-six spectral lines. Only six spectra lines have percent uncertainties of more than 10%. The results of the remaining seventy spectral lines agree well with the NIST values. Almost 1800 transition probabilities, oscillators, and line strengths are new.
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References
B. Thorsbro, Atomic Data Needs in Astrophysics: The Galactic Center “Scandium Mystery”, Atoms, 8(1), 4. (2020). https://doi.org/10.3390/atoms8010004
G. Alecian, F. LeBlanc, and G. Massacrier, “Scandium in AmFm stars in the light of new atomic data,” Astronomy & Astrophysics, 554, A89 (2013). https://doi.org/10.1051/0004-6361/201321156
H.W. Zhang, T. Gehren, and G. Zhao, „A non-local thermodynamic equilibrum study of scandium in the Sun,” Astronomy & Astrophysics, 481(2), 489-497 (2008). https://doi.org/10.1051/0004-6361:20078910
J.E. Lawler, C. Sneden, G. Nave, M.P. Wood, and J.J. Cowan, “Transition probabilities of Sc I and Sc II and Scandium abundances in the Sun, Arcturus, and HD 84937,” The Astrophysical Journal Supplement Series, 241(2), 21 (2019). https://doi.org/10.3847/1538-4365/ab08ef
X. Liu, and J. Zhang, “Quantum defects of 1s2nh configurations in Li-like system from Sc XIX to Zn XXVIII ion,” Journal of the Korean Physical Society, 80(12), 1107-1113 (2022). https://doi.org/10.1007/s40042-022-00465-3
V.A. Yerokhin, C.H. Keitel, and Z. Harman, “Two-photon-exchange corrections to the g factor of Li-like ions,” Physical Review A, 104(2), 022814 (2021). https://doi.org/10.1103/PhysRevA.104.022814
X. Liu, J.C. Zhang, and Z.W. Wang, “Theoretical calculation of ionization potentials and relativistic energies of high angular momentum 1s2ng states of Li-like ions,” Results in Physics, 12, 398-402 (2019). https://doi.org/10.1016/j.rinp.2018.11.087
V.A. Yerokhin, and A. Surzhykov, “Energy levels of core-excited 1s2l2l′ states in lithium-like ions: Argon to uranium,” Journal of Physical and Chemical Reference Data, 47(2) (2018). https://doi.org/10.1063/1.5034574
V.M. Shabaev, D.A. Glazov, A.V. Malyshev, and I.I. Tupitsyn, “Recoil effect on the g factor of Li-like ions,” Physical Review Letters, 119(26), 263001 (2017). https://doi.org/10.1103/PhysRevLett.119.263001
K.M. Aggarwal, and F.P. Keenan, “Energy levels, radiative rates, and electron impact excitation rates for transitions in Li-like ions with 12≤ Z≤ 20,” Atomic Data and Nuclear Data Tables, 99(2), 156-248 (2013). https://doi.org/10.1016/j.adt.2012.03.001
J. Sapirstein, and K.T. Cheng, “S-matrix calculations of energy levels of the lithium isoelectronic sequence,” Physical Review A, 83(1), 012504 (2011). https://doi.org/10.1103/PhysRevA.83.012504
W. Zhi-Wen, Y. Di, H. Mu-Hong, H. Qiu-Ju, and L. Jin-Ying, “Transition energy and oscillator strength of Sc18+ ion,” Chinese Physics, 14(8), 1559 (2005). https://doi.org/10.1088/1009-1963/14/8/015
T. Nishikawa, “Energy level data recommendation by screening constant,” Journal of Quantitative Spectroscopy and Radiative Transfer, 67(1), 43-54 (2000). https://doi.org/10.1016/S0022-4073(99)00192-2
E. BiÉmont, Y. Frémat, and P. Quinet, “Ionization potentials of atoms and ions from lithium to tin (Z= 50),” Atomic Data and Nuclear Data Tables, 71(1), 117-146 (1999). https://doi.org/10.1006/adnd.1998.0803
Z.C. Yan, M. Tambasco, and G.W.F. Drake, “Energies and oscillator strengths for lithiumlike ions,” Physical Review A, 57(3), 1652 (1998). https://doi.org/10.1103/PhysRevA.57.1652
Q.R. Zhu, S.F. Pan, and T.H. Zeng, “Energy levels, wavelengths, and radiative transition probabilities for the Li-like ions with 20≤ Z≤ 25,” Atomic data and nuclear data tables, 52(1), 109-141 (1992). https://doi.org/10.1016/0092-640X(92)90010-F
M. Saeed, and Z. Uddin, “Lifetimes of Fine Levels of Li Atom for 20< n< 31 by Extended Ritz Formula,” Canadian Journal of Physics, (January), (2023). https://doi.org/10.1139/cjp-2023-0220
M. Saeed, S.U. Rehman, M.M. Khan, and Z. Uddin, “Computation of Characteristics of C IV Transitions,” East European Journal of Physics, (2), 165-172 (2023). https://doi.org/10.26565/2312-4334-2023-2-16
R. Siddique, R. Zafar, S. Raza, S.Z. Iqbal, and Z. Uddin, “Mean Lifetimes of ns, np, nd, & nf Levels of NV,” East European Journal of Physics, (3), 424-429 (2023). https://doi.org/10.26565/2312-4334-2023-3-46
R. Siddiq, M.N. Hameed, M.H. Zaheer, M.B. Khan, and Z. Uddin, “Rydberg energies and transition probabilities of Li I for np–ms (m≤ 5) transitions,” Beni-Suef University Journal of Basic and Applied Sciences, 11(1), 1-9 (2022). https://doi.org/10.1186/s43088-022-00224-0
National Institute of Standards and Technology, 100 Bureau Drive Gaithersburg, MD 20899, 301-975-2000, USA, https://physics.nist.gov/PhysRefData/ASD/lines_form.html
Copyright (c) 2024 Muhammad Kaleem, Saba Jawaid, Roohi Zafar, Zaheer Uddin
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