54 citations · 371 across the 22 of their papers we have counts for
21 papers · 1 filter
A CSFG-based neural network basis-selection method for large-scale RCI calculations within GRASPG
Chaofan Shi, Shaowei Tian, Ran Si +3
We present a neural network (NN) basis-selection method for large-scale relativistic configuration interaction (RCI) calculations in GRASPG. The method employs configuration state…
Non-orthogonal extension of Graspg - dynamic electron correlation for large and compact active spaces
Sijie Wu, Ran Si, Chongyang Chen +3
Accurate relativistic multiconfiguration calculations of correlation-sensitive atomic properties are often limited by the rapid growth of configuration state function expansions wh…
Atomic data benchmarked by Large-scale Multiconfiguration Dirac-Hartree-Fock Calculations for Beryllium
Sijie Wu, Shaowei Tian, Ran Si +6
The multiconfiguration Dirac-Hartree-Fock (MCDHF) and relativistic configuration interaction (RCI) methods are used to provide excitation energies, radiative transition data, lifet…
Prediction of Nuclear Clock Transitions Frequency Difference between Th and Th via \textit{ab-initio} Self-Consistent Field Theory
Ran Si, Chaofan Shi, Nan Xue +4
The isotope is a promising candidate for nuclear clocks, with its transition frequency influenced by electron-induced nuclear frequency shifts. This effect is com…
Graspg -- An extension to Grasp2018 based on Configuration State Function Generators
Ran Si, Yanting Li, Kai Wang +4
The Graspg program package is an extension of Grasp2018 [Comput. Phys. Commun. 237 (2019) 184-187] based on configuration state function generators (CSFGs). The generators keep spi…
Experimental Access to Observing Decay from Extremely Long-Lived Metastable Electronic States via Penning Trap Spectrometry
Bingsheng Tu, Ran Si, Yang Shen +5
Long-lived ionic quantum states known as metastable electronic states in highly-charged ions (HCIs) are of great interest in fundamental physics. Especially, it generates transitio…