Oscillator strengths for high-excitation Ti II from laboratory measurements and calculations

DSpace Repository

Oscillator strengths for high-excitation Ti II from laboratory measurements and calculations

Show full item record

Files for download

Main article
Facebook

Simple item record

Publication Article, peer reviewed scientific
Title Oscillator strengths for high-excitation Ti II from laboratory measurements and calculations
Author(s) Lundberg, Hans ; Hartman, Henrik ; Engström, Lars ; Nilsson, Hampus ; Persson, Anders ; Palmeri, Patrick ; Fivet, Vanessa ; Malcheva, G ; Blagoev, Kiril
Date 2016
English abstract
This work reports new experimental radiative lifetimes of six 3d2(3F)5s levels in singly ionized titanium, with an energy around 63 000 cm−1 and four 3d2(3F)4p odd parity levels where we confirm previous investigations. Combining the new 5s lifetimes with branching fractions measured previously by Pickering et al., we report 57 experimental log gf values for transitions from the 5s levels. The lifetime measurements are performed using time-resolved laser-induced fluorescence on ions produced by laser ablation. One- and two-step photon excitation is employed to reach the 4p and 5s levels, respectively. Theoretical calculations of the radiative lifetimes of the measured levels as well as of oscillator strengths for 3336 transitions from these levels are reported. The calculations are carried out by a pseudo relativistic Hartree–Fock method taking into account core-polarization effects. The theoretical results are in a good agreement with the experiments and are needed for accurate abundance determinations in astronomical objects.
DOI http://dx.doi.org/10.1093/mnras/stw922 (link to publisher's fulltext.)
Publisher Royal Astronomical Society
Host/Issue Monthly Notices of the Royal Astronomical Society;1
Volume 460
ISSN 0035-8711
Pages 356-362
Language eng (iso)
Subject(s) atomic data
methods: laboratory: atomic
techniques: spectroscopic
Technology
Research Subject Categories::NATURAL SCIENCES
Handle http://hdl.handle.net/2043/20935 (link to this page)

This item appears in the following Collection(s)

Show full item record

Search


Browse

My Account

Statistics