Abstract The transition energies, wavelengths and dipole oscillator strengths of 1s$^{2}$2p-1s$^{2}n$d ($3 \le n \le 9$) for Cr$^{21 +}$ ion are calculated. The fine structure splittings of 1s$^{2}n$d ($n \le 9$) states for this ion are also calculated. In calculating energy, we have estimated the higher-order relativistic contribution under a hydrogenic approximation. The quantum defect of Rydberg series 1s$^{2}n$d is determined according to the quantum defect theory. The results obtained in this paper excellently agree with the experimental data available in the literature. Combining the quantum defect theory with the discrete oscillator strengths, the discrete oscillator strengths for the transitions from initial state 1s$^{2}$2p to highly excited 1s$^{2}n$d states ($n \ge 10$) and the oscillator strength density corresponding to the bound--free transitions are obtained.
Received: 03 February 2008
Revised: 18 March 2008
Accepted manuscript online:
Fund: Project supported by the National
Natural Science Foundation of China
(Grant No 10774063).
Cite this article:
Wang Zhi-Wen(王治文), Liu Ying(刘影), Hu Mu-Hong(胡木宏), Li Xin-Ru(李新汝), and Wang Ya-Nan(王亚男) Transition energy and dipole oscillator strength for 1s22p-1s2nd of Cr2l+ ion 2008 Chin. Phys. B 17 2909
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
