Ionization potential and excitation energy calculations for Ba+ using the relativistic coupled-cluster method - art. no. 032502

Authors
Gopakumar, G Merlitz, H Majumder, S Chaudhuri, RK Das, BP Mahapatra, US Mukherjee, D
Citation
G. Gopakumar et al., Ionization potential and excitation energy calculations for Ba+ using the relativistic coupled-cluster method - art. no. 032502, PHYS REV A, 6403(3), 2001, pp. 2502
Citations number
19
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW A
ISSN journal
10502947 → ACNP
Volume
6403
Issue
3
Year of publication
2001
Database
ISI
SICI code
1050-2947(200109)6403:3<2502:IPAEEC>2.0.ZU;2-R
Abstract
We report the results of our relativistic coupled cluster singles, doubles, and partial triples calculations of the ionization potentials (IP) and exc itation energies (EE) for different low-lying levels of Ba+. The accuracies of the IP's and EE's are approximately 0.2% and 1%, respectively. The incl usion of the triple excitations were crucial to achieve this degree of prec ision.