Energies, Wavelengths, and Transition Probabilities in Sc XIII
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NUCLEI Theory
Energies, Wavelengths, and Transition Probabilities in Sc XIII Fatma El-Sayed1), 2)* and S. M. Attia1), 2) Received June 27, 2019; revised June 27, 2019; accepted June 27, 2019
Abstract—The fine-structure energy levels and lifetimes are calculated for the lowest 218 levels of the 2s2 2p5 , 2s2p6 , 2s2 2p4 3s, 2s2 2p4 3p, 2s2 2p4 3d, 2s2p5 3s, 2s2p5 3p, 2s2p5 3d, 2p6 3s, 2p6 3p, 2p6 3d, 2s2 2p4 4s, 2s2 2p4 4p, 2s2 2p4 4d, 2s2p5 4s, 2s2p5 4p, and 2s2p5 4d configurations in Sc XIII using the general-purpose relativistic atomic structure package (GRASP). The atomic data of the electric dipole (E1), electric quadrupole (E2), magnetic dipole (M 1), and magnetic quadrupole (M 2) transitions from the levels of 2s2 2p5 , 2s2p6 , 2s2 2p4 3s, 2s2 2p4 3p, 2s2 2p4 3d, 2s2p5 3s, 2s2p5 3p, 2s2p5 3d, 2p6 3s, 2p6 3p, and 2p6 3d configurations to the levels of the 2s2 2p5 and 2s2p6 configurations are presented. The GRASP results are compared with the other calculations and measurements. DOI: 10.1134/S1063778819060061
1. INTRODUCTION The atomic data of highly ionized atoms are needed for several fields, such as astrophysics, laser physics, and plasmas physics. The magnetic-dipole transitions in the 2s2 2p5 configuration are an important tool for the diagnostics of high-temperature plasmas [1]. The atomic data for ions in the F -like ions have been reported [1–23]. Cohen et al. [2] have observed the lines of the 2s2 2p5 –2s2 2p4 3s, 2s2 2p5 –2s2 2p4 3d, and 2s2p6 – 2s2p5 3s transitions of F -like ions from Sc XIII to Cu XXI. Chapman and Shadmi [3] have calculated the energy levels and oscillator strengths for transitions from the levels of the 2s2 2p4 3s, 2s2 2p4 3d, 2s2p5 3p, 2p6 3s, and 2p6 3d configurations to 2s2 2p5 2P 2 52 3/2 and 2s 2p P1/2 levels for the Sc XIII, Fe XVIII, and Cu XXI. The lines of the 2s2 2p5 –2s2 2p4 3d transitions for the F -like ions with 19 Z 27 have been observed by Feldman et al. [4]. The general-purpose relativistic atomic structure package code has been used in the calculation of the atomic data for transitions among the lowest 113 levels of the 2s2 2p5 , 2s2p6 , 2s2 2p4 3l, 2s2 p5 3l, and 2p6 3l (l = s, p, d) configurations for F -like ions with 37 Z 53 [19], and for ions with 55 Z 73 [22]. Recently, Zhang et al. [23] have calculated the atomic data for E1, E2, M 1, and M 2 transitions between the lowest 200 levels of 2s2 2p5 , 2s2p6 3s, 2s2p6 3p, 1)
Physics Department, Faculty of Science, Kafrelsheikh University, Kafr El-Sheikh, Egypt. 2) Physics Department, Faculty of Applied Science, Umm AlQura University, Makkah, Saudi Arabia. * E-mail: [email protected]
2s2p6 3d, 2s2p6 4s, 2s2p6 4p, 2s2p6 4d, and 2s2p6 4f configurations in Kr XXVIII. In this work, we calculate the energy levels, lifetimes, wavelengths, transition probabilities, oscillator strengths, and line strengths for E1, E2, M 1, and M 2 transitions in Sc XIII using the general-purpose relativistic atomic structure package. 2. CALCULATION AND RESULTS
2.1. Energy Levels The atomic data of Sc XIII of the lowest 218 l
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