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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

Li, Z. S; Lundberg, Hans LU ; Sikstrom, C. M and Johansson, S (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.
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author
organization
publishing date
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
2012-02-18 10:30:26
date last changed
2016-10-13 04:33:14
@misc{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    = {ARRAY(0xa20f2b0)},
  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          = {http://dx.doi.org/10.1007/s100500050311},
  volume       = {6},
  year         = {1999},
}