The FERRUM project: radiative lifetimes of intermediate-excitation states of Fe II measured in a fluorescence signal induced by laser pumping from a metastable state
(1999) In European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics 6(1). p.9-12- Abstract
- A new collaborative program, the FERRUM project. aims at extending and improving the database of oscillator strengths for the astrophysical important Fe II spectrum. In this paper we report on the experimental method applied for measurements of radiative lifetimes of Fe II levels at intermediate excitation (5-10 eV) that can be populated ba laser excitation from metastable states. The technique involves a laser-produced plasma as a source for metastable ions, a stimulated Brillouin scatttering cell for shortening the laser pulse, and fast time resolved detection. We have applied the technique on two Fe II levels at about 7.5 eV and obtained the lifetimes: tau(z(4)S(3/2)(0)) = 3.8(2) ns; tau(y(4)P(5/2)(0)) = 3.6(3) Its.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2258769
- author
- Li, Z. S ; Lundberg, Hans LU ; Sikstrom, C. M and Johansson, S
- organization
- publishing date
- 1999
- type
- Contribution to journal
- publication status
- published
- subject
- in
- European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics
- volume
- 6
- issue
- 1
- pages
- 9 - 12
- publisher
- EDP Sciences
- external identifiers
-
- scopus:0033115861
- ISSN
- 1434-6060
- DOI
- 10.1007/s100500050311
- language
- English
- LU publication?
- yes
- id
- ae4f7bdd-791e-4e48-be00-8b198ddce29e (old id 2258769)
- date added to LUP
- 2016-04-04 09:34:49
- date last changed
- 2022-01-29 18:32:35
@article{ae4f7bdd-791e-4e48-be00-8b198ddce29e, abstract = {{A new collaborative program, the FERRUM project. aims at extending and improving the database of oscillator strengths for the astrophysical important Fe II spectrum. In this paper we report on the experimental method applied for measurements of radiative lifetimes of Fe II levels at intermediate excitation (5-10 eV) that can be populated ba laser excitation from metastable states. The technique involves a laser-produced plasma as a source for metastable ions, a stimulated Brillouin scatttering cell for shortening the laser pulse, and fast time resolved detection. We have applied the technique on two Fe II levels at about 7.5 eV and obtained the lifetimes: tau(z(4)S(3/2)(0)) = 3.8(2) ns; tau(y(4)P(5/2)(0)) = 3.6(3) Its.}}, author = {{Li, Z. S and Lundberg, Hans and Sikstrom, C. M and Johansson, S}}, issn = {{1434-6060}}, language = {{eng}}, number = {{1}}, pages = {{9--12}}, publisher = {{EDP Sciences}}, series = {{European Physical Journal D. Atomic, Molecular, Optical and Plasma Physics}}, title = {{The FERRUM project: radiative lifetimes of intermediate-excitation states of Fe II measured in a fluorescence signal induced by laser pumping from a metastable state}}, url = {{https://lup.lub.lu.se/search/files/5362176/2297396.pdf}}, doi = {{10.1007/s100500050311}}, volume = {{6}}, year = {{1999}}, }