Hyperfine-dependent lifetimes in Be-like ions
(2009) In Physical Review A (Atomic, Molecular and Optical Physics) 79(3).- Abstract
- Theoretical investigations of hyperfine quenching of the two metastable levels 1s(2)2s2p P-3(0) and P-3(2) have been performed along the Be-like isoelectronic sequence for ions between Z=6-22. It is shown that the lifetime of the latter level is sensitive to hyperfine quenching in the beginning of the isoelectronic sequence, but the sensitivity decreases towards the high-Z end. It is also shown that the hyperfine dependent branching fraction between the 2s(2) S-1(0)-2s2p P-3(2) and the 2s2p P-3(1)-2s2p P-3(2) transitions can lead to some rather drastic changes in the spectra. Our predicted value of 0.677 s(-1) for the hyperfine-induced 2s(2) S-1(0)-2s2p P-3(0) transition rate for Ti-47(18+) are in disagreement with a recent experimental... (More)
- Theoretical investigations of hyperfine quenching of the two metastable levels 1s(2)2s2p P-3(0) and P-3(2) have been performed along the Be-like isoelectronic sequence for ions between Z=6-22. It is shown that the lifetime of the latter level is sensitive to hyperfine quenching in the beginning of the isoelectronic sequence, but the sensitivity decreases towards the high-Z end. It is also shown that the hyperfine dependent branching fraction between the 2s(2) S-1(0)-2s2p P-3(2) and the 2s2p P-3(1)-2s2p P-3(2) transitions can lead to some rather drastic changes in the spectra. Our predicted value of 0.677 s(-1) for the hyperfine-induced 2s(2) S-1(0)-2s2p P-3(0) transition rate for Ti-47(18+) are in disagreement with a recent experimental value of 0.56(3) s(-1). Our calculated values of this quenching are in agreement with other recent calculations all along the sequence. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1400514
- author
- Andersson, M ; Zou, Y. ; Hutton, R and Brage, Tomas LU
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- ions, positive, metastable states, hyperfine structure, isoelectronic series, radiative lifetimes
- in
- Physical Review A (Atomic, Molecular and Optical Physics)
- volume
- 79
- issue
- 3
- article number
- 032501
- publisher
- American Physical Society
- external identifiers
-
- wos:000264770200073
- scopus:64849103325
- ISSN
- 1050-2947
- DOI
- 10.1103/PhysRevA.79.032501
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Nuclear Physics (Faculty of Technology) (011013007), Department of Physics (011013000)
- id
- 85274d3f-4394-49b1-adff-b674d28af8ca (old id 1400514)
- date added to LUP
- 2016-04-01 11:44:29
- date last changed
- 2022-04-05 04:17:18
@article{85274d3f-4394-49b1-adff-b674d28af8ca,
abstract = {{Theoretical investigations of hyperfine quenching of the two metastable levels 1s(2)2s2p P-3(0) and P-3(2) have been performed along the Be-like isoelectronic sequence for ions between Z=6-22. It is shown that the lifetime of the latter level is sensitive to hyperfine quenching in the beginning of the isoelectronic sequence, but the sensitivity decreases towards the high-Z end. It is also shown that the hyperfine dependent branching fraction between the 2s(2) S-1(0)-2s2p P-3(2) and the 2s2p P-3(1)-2s2p P-3(2) transitions can lead to some rather drastic changes in the spectra. Our predicted value of 0.677 s(-1) for the hyperfine-induced 2s(2) S-1(0)-2s2p P-3(0) transition rate for Ti-47(18+) are in disagreement with a recent experimental value of 0.56(3) s(-1). Our calculated values of this quenching are in agreement with other recent calculations all along the sequence.}},
author = {{Andersson, M and Zou, Y. and Hutton, R and Brage, Tomas}},
issn = {{1050-2947}},
keywords = {{ions; positive; metastable states; hyperfine structure; isoelectronic series; radiative lifetimes}},
language = {{eng}},
number = {{3}},
publisher = {{American Physical Society}},
series = {{Physical Review A (Atomic, Molecular and Optical Physics)}},
title = {{Hyperfine-dependent lifetimes in Be-like ions}},
url = {{http://dx.doi.org/10.1103/PhysRevA.79.032501}},
doi = {{10.1103/PhysRevA.79.032501}},
volume = {{79}},
year = {{2009}},
}