Advanced

Lifetimes along perturbed Rydberg series in neutral thallium

Biemont, E; Palmeri, P; Quinet, P; Dai, Z; Svanberg, Sune LU and Xu, Huailiang LU (2005) In Journal of Physics B: Atomic, Molecular and Optical Physics 38(19). p.3547-3558
Abstract
Radiative lifetimes of 15 Tl I levels belonging to the 6s(2)ns(2)S(1/2) (n = 7-14) and 6s(2)nd(2)D(3/2) Rydberg series (n = 6-12) have been measured using a time-resolved laser-induced fluorescence technique. All the measured levels have been excited from the ground state 6s(2)6p(2)P(1/2)(0) (odd parity) with a single-step excitation process. The general perturbation of the ns series by the 6s6p(2) configuration and the corresponding modification of the lifetimes are adequately reproduced by a theoretical model including core-polarization effects and combined with a least-squares fit to the observed energy levels. The general behaviour of the lifetime values for the 6s(2)np odd levels along the Rydberg series is also well reproduced. The... (More)
Radiative lifetimes of 15 Tl I levels belonging to the 6s(2)ns(2)S(1/2) (n = 7-14) and 6s(2)nd(2)D(3/2) Rydberg series (n = 6-12) have been measured using a time-resolved laser-induced fluorescence technique. All the measured levels have been excited from the ground state 6s(2)6p(2)P(1/2)(0) (odd parity) with a single-step excitation process. The general perturbation of the ns series by the 6s6p(2) configuration and the corresponding modification of the lifetimes are adequately reproduced by a theoretical model including core-polarization effects and combined with a least-squares fit to the observed energy levels. The general behaviour of the lifetime values for the 6s(2)np odd levels along the Rydberg series is also well reproduced. The use of the multiconfiguration quantum defect theory has allowed us to obtain lifetime values along the 6s(2)ns(2)S(1/2) series up to levels with n = 31. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Physics B: Atomic, Molecular and Optical Physics
volume
38
issue
19
pages
3547 - 3558
publisher
IOP Publishing
external identifiers
  • wos:000233812600010
  • scopus:25444527737
ISSN
0953-4075
DOI
10.1088/0953-4075/38/19/007
language
English
LU publication?
yes
id
f57e5e3c-87df-478d-ac72-35340f0ef581 (old id 211121)
date added to LUP
2007-08-16 12:35:38
date last changed
2017-09-17 07:41:23
@article{f57e5e3c-87df-478d-ac72-35340f0ef581,
  abstract     = {Radiative lifetimes of 15 Tl I levels belonging to the 6s(2)ns(2)S(1/2) (n = 7-14) and 6s(2)nd(2)D(3/2) Rydberg series (n = 6-12) have been measured using a time-resolved laser-induced fluorescence technique. All the measured levels have been excited from the ground state 6s(2)6p(2)P(1/2)(0) (odd parity) with a single-step excitation process. The general perturbation of the ns series by the 6s6p(2) configuration and the corresponding modification of the lifetimes are adequately reproduced by a theoretical model including core-polarization effects and combined with a least-squares fit to the observed energy levels. The general behaviour of the lifetime values for the 6s(2)np odd levels along the Rydberg series is also well reproduced. The use of the multiconfiguration quantum defect theory has allowed us to obtain lifetime values along the 6s(2)ns(2)S(1/2) series up to levels with n = 31.},
  author       = {Biemont, E and Palmeri, P and Quinet, P and Dai, Z and Svanberg, Sune and Xu, Huailiang},
  issn         = {0953-4075},
  language     = {eng},
  number       = {19},
  pages        = {3547--3558},
  publisher    = {IOP Publishing},
  series       = {Journal of Physics B: Atomic, Molecular and Optical Physics},
  title        = {Lifetimes along perturbed Rydberg series in neutral thallium},
  url          = {http://dx.doi.org/10.1088/0953-4075/38/19/007},
  volume       = {38},
  year         = {2005},
}