The FERRUM project: Branching ratios and atomic transition probabilities of FeII transitions from the 3d(6)(a(3)F)4p subconfiguration in the visible to VUV spectral region

Citation
Jc. Pickering et al., The FERRUM project: Branching ratios and atomic transition probabilities of FeII transitions from the 3d(6)(a(3)F)4p subconfiguration in the visible to VUV spectral region, ASTRON ASTR, 377(1), 2001, pp. 361-367
Citations number
28
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Space Sciences
Journal title
ASTRONOMY & ASTROPHYSICS
ISSN journal
1432-0746 → ACNP
Volume
377
Issue
1
Year of publication
2001
Pages
361 - 367
Database
ISI
SICI code
1432-0746(200110)377:1<361:TFPBRA>2.0.ZU;2-C
Abstract
We report measurements of the relative intensities of 81 emission lines of Fe II between 160 nm and 350 nm (62 168 cm(-1) to 28 564 cm(-1)) from 4 lev els by high resolution Fourier transform spectrometry, using a Penning disc harge lamp as light source. These relative intensities have been used to de termine the line branching fractions, which have then been combined with ac curate experimental radiative lifetime measurements reported recently to gi ve absolute transition probabilities and oscillator strengths for 81 lines. The accuracy of these f-values is compared with other previous experimenta l measurements, and with theoretical values. The new transition probabiliti es will allow accurate determinations of Fe II abundances in a wide variety of astrophysical objects.