Radiative Lifetimes for Singly Ionized Beryllium

Abstract

The theoretical lifetimes for singly ionized beryllium (Be II) have been calculated using the weakest bound electron potential model theory and the quantum defect orbital theory under the assumption of the LS coupling scheme. In the calculations, many states are considered. Some lifetime values for highly excited levels have been obtained using these methods. The lifetimes presented in this work have been compared with the early theoretical calculations and measurements presented in the literature. A good agreement with the results in the literature has been obtained.

Transition Probabilities, Oscillator Strengths and Line Strengths Result From Radiative Transitions

“…The lifetime results of Theodosiou [19] and Glukhov et al [18] are in good agreement with the experimental results [3,5]. The results of this study are in excellent agreement with the results of Çelik et al [9], Theodosiou, Glukhov et al [18], and [30,31], therefore, Table 1 shows only lifetimes calculated by Glukhov et al [18] for comparison. Both Theodosiou and Glukhov et al calculated lifetimes up to n < 11.…”

“…Singly ionized alkaline-earth metal beryllium (Be-II) holds significance in theoretical and experimental atomic physics, astrophysics, space physics, and plasma. Beryllium has vast applications in gyroscopes, computer parts, instruments, nuclear work, and ceramic applications [1,9]. While ample research has explored a range of spectroscopic characteristics of beryllium, there is a scarcity of literature specifically addressing transition probabilities.…”

“…They tabulated the data for about 1400 allowed and forbidden transitions by covering all ionization stages [8]. In 2016, Çelik et al employed the WBEPM and quantum defect theory and calculated the lifetimes for singly ionized beryllium (Be II) [9]. Wang et al employed the time-resolved laser-induced fluorescence technique to measure the radiative lifetimes of 05 levels in Be I.…”

Precise Computation of Energy Levels and Radiative Lifetimes in the s, p, d, and f Sequence of Hydrogen Isotope, with Natural Line Widths

“…And in past few years many elements in their atomic and ionic states were studied by this theory because of its semi-empirical nature. All these studies show remarkably good agreement in comparison with experimental results [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22].…”