Search: id:"swepub:oai:DiVA.org:su-67023" >
The FERRUM project :
The FERRUM project : metastable lifetimes in Cr II
-
- Bäckström, Erik (author)
- Stockholms universitet,Fysikum
-
- Gurell, Jonas (author)
- Stockholms universitet,Fysikum
-
- Royen, Peder (author)
- Stockholms universitet,Fysikum
-
show more...
-
- Mannervik, Sven (author)
- Stockholms universitet,Fysikum
-
- Norlin, Lars-Olov (author)
- KTH,Kärnfysik
-
- Blackwell-Whitehead, Richard (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
-
- Hartman, Henrik (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
-
- Nilsson, Hampus (author)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
-
show less...
-
(creator_code:org_t)
- 2011-12-21
- 2012
- English.
-
In: Monthly notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 420:2, s. 1636-1639
- Related links:
-
https://doi.org/10.1...
-
show more...
-
https://su.diva-port... (primary) (Raw object)
-
https://academic.oup...
-
https://portal.resea... (primary) (free)
-
http://dx.doi.org/10...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
https://urn.kb.se/re...
-
https://lup.lub.lu.s...
-
show less...
Abstract
Subject headings
Close
- Parity forbidden radiative transitions from metastable levels are observed in spectra of low-density astrophysical plasmas. These lines are used as probes of the physical conditions, made possible due to the long lifetime of their upper level. In a joint effort, the FERRUM project aims to obtain new and accurate atomic data for the iron-group elements, and part of this project concerns forbidden lines. The radiative lifetimes of the metastable energy levels 3 d4(a 3 D)4 s c4 D 5/2 and 3 d4(a 3 D)4 s c4 D 7/2 of singly ionized chromium have been measured. The experiment has been performed at the ion storage ring CRYRING. We employed a laser-probing technique developed for measuring long lifetimes. In this article, we present the lifetimes of these levels to be t5/2= 1.28(16) s and t7/2= 1.37(7) s, respectively. A comparison with previous theoretical work shows good agreement and the result is discussed in a theoretical context.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- atomic data
- methods: laboratory
- techniques: spectroscopic
- astronomical data bases: miscellaneous
- Physics
- fysik
- atomic data
- methods: laboratory
- techniques: spectroscopic
- astronomical data bases: miscellaneous
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database