R
Ran Si
Researcher at Fudan University
Publications - 69
Citations - 897
Ran Si is an academic researcher from Fudan University. The author has contributed to research in topics: Dipole & Quadrupole. The author has an hindex of 17, co-authored 57 publications receiving 695 citations. Previous affiliations of Ran Si include Chinese Ministry of Education & Lund University.
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Journal ArticleDOI
Candidate for Laser Cooling of a Negative Ion: High-Resolution Photoelectron Imaging of Th -
Rulin Tang,Ran Si,Ran Si,Zejie Fei,Xiaoxi Fu,Yuzhu Lu,Tomas Brage,Tomas Brage,Hongtao Liu,Chongyang Chen,Chuangang Ning +10 more
TL;DR: The zero nuclear spin and hence lack of hyperfine structure in Th^{-} reduces the potential complications in laser cooling as encountered in La^{-), making Th- a new and exciting candidate for laser cooling.
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EXTENDED RELATIVISTIC CONFIGURATION INTERACTION AND MANY-BODY PERTURBATION CALCULATIONS OF SPECTROSCOPIC DATA FOR THE N 6 CONFIGURATIONS IN Ne-LIKE IONS BETWEEN Cr XV AND Kr XXVII
Kai Wang,Kai Wang,Zhan Bin Chen,Ran Si,Per Jönsson,Jörgen Ekman,Xue Ling Guo,Xue Ling Guo,S. Li,F. Y. Long,W. Dang,X. H. Zhao,Roger Hutton,Chong Yang Chen,Jun Yan,Jun Yan,Xu Yang +16 more
TL;DR: Level energies, wavelengths, electric dipole, magnetic dipoles, electric quadrupole, and magnetic quadrupoles transition rates, oscillator strengths, and line strengths from combined relativistic con...
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EXTENDED CALCULATIONS with SPECTROSCOPIC ACCURACY: ENERGY LEVELS and TRANSITION PROPERTIES for the FLUORINE-LIKE ISOELECTRONIC SEQUENCE with Z = 24-30
Ran Si,Ran Si,S. Li,X. L. Guo,Zhan-Bin Chen,Tomas Brage,Per Jönsson,Kai Wang,Jun Yan,Jun Yan,C. Y. Chen,Yaming Zou +11 more
TL;DR: In this article, the authors performed multiconfiguration Dirac-Hartree-Fock calculations and second-order many-body perturbation calculations for F-like ions with Z = 24-30.
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Calculations with spectroscopic accuracy: energies and transition rates in the nitrogen isoelectronic sequence from Ar XII to Zn XXIV
Kai Wang,Ran Si,W. Dang,Per Jönsson,X. L. Guo,S. Li,Zhan Bin Chen,H. Zhang,F. Y. Long,H. T. Liu,D. F. Li,Roger Hutton,Chong Yang Chen,Jun Yan +13 more
TL;DR: In this article, the relativistic configuration interaction and many-body perturbation calculations are performed for the 359 fine-structure levels of the N-like ions from Ar XII to Zn XXIV.
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Extended Calculations of Spectroscopic Data : Energy Levels, Lifetimes, and Transition Rates for O-like Ions from Cr XVII to ZnXXIII
Kai Wang,Kai Wang,Per Jönsson,Jörgen Ekman,Gediminas Gaigalas,Michel Godefroid,Ran Si,Zhan-Bin Chen,S. Li,Chong Yang Chen,Jun Yan,Jun Yan +11 more
TL;DR: In this paper, two state-of-the-art methods, multiconfiguration Dirac-Hartree-Fock and second-order many-body perturbation theory, were employed to estimate the excitation energies and lifetimes for the lowest 200 states of the most common Gaussian distribution.