A new measurement of the 1s2s2p 4p0-1s2p2 4p transitions in c iv : Wavelengths, fine structure intervals and lifetimes
(1987) In Physica Scripta 36(2). p.250-254- Abstract
The n = 0 transition multiplet connecting the lowest quartet states of doubly excited C IV has been studied by beam-foil spectroscopy. The fine structure splittings obtained for the 1s2s2p 4p0and 1s2p2 4p terms confirm previous experimental results with an improved accuracy. The average transition wavelength = (1344.49 0.04)A is now more precisely determined by about a factor of eight. At the new level of precision this value shows a small but significant deviation from the best theoretical predictions. The lifetimes of the 1s2p2 4p levels have been determined as = (0.71 0.07)ns for 4P5/2 and = (1.66 0.13)ns for 4p3/2. The latter value disagrees with... (More)
The n = 0 transition multiplet connecting the lowest quartet states of doubly excited C IV has been studied by beam-foil spectroscopy. The fine structure splittings obtained for the 1s2s2p 4p0and 1s2p2 4p terms confirm previous experimental results with an improved accuracy. The average transition wavelength = (1344.49 0.04)A is now more precisely determined by about a factor of eight. At the new level of precision this value shows a small but significant deviation from the best theoretical predictions. The lifetimes of the 1s2p2 4p levels have been determined as = (0.71 0.07)ns for 4P5/2 and = (1.66 0.13)ns for 4p3/2. The latter value disagrees with previous experimental results but is in excellent agreement with an isoelectronic trend analysis.
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- author
- Engstrom, L. LU ; Hutton, R. LU ; Reistad, N. LU ; Martinson, I. LU ; Huldt, S. LU ; Mannervik, S. and Trabert, E.
- organization
- publishing date
- 1987-08-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physica Scripta
- volume
- 36
- issue
- 2
- pages
- 5 pages
- publisher
- IOP Publishing
- external identifiers
-
- scopus:6244228429
- ISSN
- 0031-8949
- DOI
- 10.1088/0031-8949/36/2/011
- language
- English
- LU publication?
- yes
- id
- 05d789e2-6238-49ef-b72c-2c726d12b90d
- date added to LUP
- 2018-03-17 10:32:07
- date last changed
- 2021-01-03 08:08:04
@article{05d789e2-6238-49ef-b72c-2c726d12b90d, abstract = {{<p>The n = 0 transition multiplet connecting the lowest quartet states of doubly excited C IV has been studied by beam-foil spectroscopy. The fine structure splittings obtained for the 1s2s2p <sup>4</sup>p<sup>0</sup>and 1s2p<sup>2</sup> <sup>4</sup>p terms confirm previous experimental results with an improved accuracy. The average transition wavelength = (1344.49 0.04)A is now more precisely determined by about a factor of eight. At the new level of precision this value shows a small but significant deviation from the best theoretical predictions. The lifetimes of the 1s2p<sup>2</sup> <sup>4</sup>p levels have been determined as = (0.71 0.07)ns for <sup>4</sup>P5/2 and = (1.66 0.13)ns for <sup>4</sup>p3/2. The latter value disagrees with previous experimental results but is in excellent agreement with an isoelectronic trend analysis.</p>}}, author = {{Engstrom, L. and Hutton, R. and Reistad, N. and Martinson, I. and Huldt, S. and Mannervik, S. and Trabert, E.}}, issn = {{0031-8949}}, language = {{eng}}, month = {{08}}, number = {{2}}, pages = {{250--254}}, publisher = {{IOP Publishing}}, series = {{Physica Scripta}}, title = {{A new measurement of the 1s2s2p <sup>4</sup>p<sup>0</sup>-1s2p<sup>2</sup> <sup>4</sup>p transitions in c iv : Wavelengths, fine structure intervals and lifetimes}}, url = {{http://dx.doi.org/10.1088/0031-8949/36/2/011}}, doi = {{10.1088/0031-8949/36/2/011}}, volume = {{36}}, year = {{1987}}, }