2021
DOI: 10.3390/plasma4010002
|View full text |Cite
|
Sign up to set email alerts
|

Super Transition Arrays: A Tool for Studying Spectral Properties of Hot Plasmas

Abstract: For the theoretical study of X and extreme-UV spectra of ions in plasmas, quantum mechanics brings more detailed results than statistical physics. However, it is impossible to handle individually the billions of levels that must be taken into account in order to properly describe hot plasmas. Such levels can be gathered into electronic configurations or superconfigurations (groups of configurations) and the corresponding calculations rely on appropriate statistical methods, for local or non-local thermodynamic… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

0
5
0

Year Published

2021
2021
2024
2024

Publication Types

Select...
6

Relationship

1
5

Authors

Journals

citations
Cited by 9 publications
(5 citation statements)
references
References 75 publications
0
5
0
Order By: Relevance
“…For concision, we will not repeat the detailed expressions here, as these have been the focus of previous works by others (e.g. [31,38,46]). Where possible, we use the same notation as in Bar-Shalom et al's original STA work and we apply Hartree atomic units throughout.…”
Section: Stasmentioning
confidence: 99%
See 1 more Smart Citation
“…For concision, we will not repeat the detailed expressions here, as these have been the focus of previous works by others (e.g. [31,38,46]). Where possible, we use the same notation as in Bar-Shalom et al's original STA work and we apply Hartree atomic units throughout.…”
Section: Stasmentioning
confidence: 99%
“…Making this type of substitution means that only one structure calculation is required for each SC, but the fact that each configuration has a unique set of integer subshell occupation numbers means that we would still need to explicitly calculate the electron-electron contribution to the configuration-average energy for each configuration. Once again, this means possibly summing over millions of configurations even for simple systems [31,46].…”
Section: Partition Functionsmentioning
confidence: 99%
“…A superconfiguration [51,52] is an ensemble of configurations. The superconfiguration approximation consists in partitioning the ensemble of configurations, i.e., in gathering them into groups.…”
Section: Self-consistent Calculations-general Case (Screening Of Ions)mentioning
confidence: 99%
“…The superconfiguration approximation consists in partitioning the ensemble of configurations, i.e., in gathering them into groups. A superconfiguration represents a number of configurations of the plasma and is composed by an ensemble of supershells (i.e., groups of subshells) and their respective populations [51,52]. For example, superconfiguration Ξ = (1s2s2p) 10 (3s3p3d) 18 (4s4p4d4 f 5s5p5d) 19 (5 f 5g) 3 represents all the configurations with shells n = 1, n = 2 and n = 3 full, a total of 19 electrons distributed in all possible ways (consistent with the Pauli exclusion principle) in the subshells 4s, 4p, 4d, 4 f , 5s, 5p and 5d (the third supershell consists of 7 orbitals 4s to 5d), and 3 electrons in the last supershell made of subshells 5 f and 5g only.…”
Section: Self-consistent Calculations-general Case (Screening Of Ions)mentioning
confidence: 99%
“…In the STA method [28,33,[46][47][48][49][50][51][52][53], a large number of configurations C are grouped into super-configurations (SCs), commonly denoted by Ξ = Π σ σ Qσ , which are defined as sets of configurations which have Q σ electrons in each 'supershell' σ, which is a group of shells. The total occupation of a super configuration is naturally:…”
Section: Number Configurations Within Superconfigurationsmentioning
confidence: 99%