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An Introduction to Relativistic Theory as Implemented in GRASP Jönsson, Per; Godefroid, Michel; Gaigalas, Gediminas; Ekman, Jörgen; Grumer, Jon; Li, Wenxian; Li , Jiguang; Brage, Tomas; Grant, Ian P.; Bieroń, Jacek; Fischer, Charlotte Froese

Abstract

Computational atomic physics continues to play a crucial role in both increasing the understanding of fundamental physics (e.g., quantum electrodynamics and correlation) and producing atomic data for interpreting observations from large-scale research facilities ranging from fusion reactors to high-power laser systems, space-based telescopes and isotope separators. A number of different computational methods, each with their own strengths and weaknesses, is available to meet these tasks. Here, we review the relativistic multiconfiguration method as it applies to the General Relativistic Atomic Structure Package [grasp2018, C. Froese Fischer, G. Gaigalas, P. Jönsson, J. Bieroń, Comput. Phys. Commun. (2018). DOI: 10.1016/j.cpc.2018.10.032]. To illustrate the capacity of the package, examples of calculations of relevance for nuclear physics and astrophysics are presented.

Item Metadata

Title
An Introduction to Relativistic Theory as Implemented in GRASP
Creator
Jönsson, Per; Godefroid, Michel; Gaigalas, Gediminas; Ekman, Jörgen; Grumer, Jon; Li, Wenxian; Li , Jiguang; Brage, Tomas; Grant, Ian P.; Bieroń, Jacek; Fischer, Charlotte Froese
Publisher
Multidisciplinary Digital Publishing Institute
Date Issued
2022-12-31
Description
Computational atomic physics continues to play a crucial role in both increasing the understanding of fundamental physics (e.g., quantum electrodynamics and correlation) and producing atomic data for interpreting observations from large-scale research facilities ranging from fusion reactors to high-power laser systems, space-based telescopes and isotope separators. A number of different computational methods, each with their own strengths and weaknesses, is available to meet these tasks. Here, we review the relativistic multiconfiguration method as it applies to the General Relativistic Atomic Structure Package [grasp2018, C. Froese Fischer, G. Gaigalas, P. Jönsson, J. Bieroń, Comput. Phys. Commun. (2018). DOI: 10.1016/j.cpc.2018.10.032]. To illustrate the capacity of the package, examples of calculations of relevance for nuclear physics and astrophysics are presented.
Subject
ATOMS; GRASP; atomic properties; relativistic atomic structure; multiconfigurational Dirac–Hartree–Fock; finite difference numerical methods; angular integration; configuration interaction; atomic wave function; configuration state function
Genre
Article
Type
Text
Language
eng
Date Available
2024-12-18
Provider
Vancouver : University of British Columbia Library
Rights
CC BY 4.0
DOI
10.14288/1.0447538
URI
http://hdl.handle.net/2429/89915
Affiliation
Science, Faculty of; Non UBC; Computer Science, Department of
Citation
Atoms 11 (1): 7 (2023)
Publisher DOI
10.3390/atoms11010007
Peer Review Status
Reviewed
Scholarly Level
Faculty; Researcher
Rights URI
https://creativecommons.org/licenses/by/4.0/
Aggregated Source Repository
DSpace

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CC BY 4.0