EXCITATION ENERGIES OF 1s2nd AND 1s2nf STATES FOR THE LITHIUM ISOELECTRONIC SEQUENCE
Qu Lian-hua (屈连华)a, Wang Zhi-wen (王治文)b, Li Bai-wen (李白文)a
a Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China; b Department of Mathematics and Physics, Wuyi University, Jiangmen 529020, China
Abstract The nonrelativistic energies of the 1s2nd and 1s2nf(n=6, 7, 8 and 9) states for the lithium isoelectronic sequence from Li I to Ne VⅢ are calculated by using a full core plus correlation method with multiconfiguration interaction wave function. Relativistic and mass-polarization effects on the energy are evaluated as the first-order pertur bation theory. In most cases with nuclear charge, Z≤7, the agreement between our predicted excitation energies and the experimental data is less than 1cm-1.
Received: 12 October 1998
Accepted manuscript online:
PACS:
31.15.ve
(Electron correlation calculations for atoms and ions: ground state)
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 19474016).
Cite this article:
Qu Lian-hua (屈连华), Wang Zhi-wen (王治文), Li Bai-wen (李白文) EXCITATION ENERGIES OF 1s2nd AND 1s2nf STATES FOR THE LITHIUM ISOELECTRONIC SEQUENCE 1999 Acta Physica Sinica (Overseas Edition) 8 423
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.