Laser Spectroscopic Studies of Radiative Lifetime and Hyperfine Structure for Group IIA and IIIA Atoms
(1985)- Abstract
- Studies of natural radiative lifetimes and hyperfine structure have
been performed for group IIA and IIIA atoms. Different laser
spectroscopic techniques such as PUMOLS, time-resolved laser spectroscopy,
using transient recorder, and collimated atomic-beam
experiments have been used. These methods employ cw or pulsed dye
laser systems.
The lifetime measurements revealed several cases in barium and
strontium where the lifetimes are being perturbed by doubly excited
states. Some of the data have been interpreted with MQDT. Influences
of induced black-body transitions have also been observed. Different
lifetime values within hyperfine structure... (More) - Studies of natural radiative lifetimes and hyperfine structure have
been performed for group IIA and IIIA atoms. Different laser
spectroscopic techniques such as PUMOLS, time-resolved laser spectroscopy,
using transient recorder, and collimated atomic-beam
experiments have been used. These methods employ cw or pulsed dye
laser systems.
The lifetime measurements revealed several cases in barium and
strontium where the lifetimes are being perturbed by doubly excited
states. Some of the data have been interpreted with MQDT. Influences
of induced black-body transitions have also been observed. Different
lifetime values within hyperfine structure multiplets have been shown
experimentally for the first time. Hyperfine structure data from
measurements in Al, Ga and In, have been used as a sensitive test for
MBPT calculations for relatively heavy elements. Measurements of Lande
factors in Ba using quantum-beat spectroscopy and optical double
resonance were performed, allowing a refinement of the MQDT analysis
for the 1130 2 sequences. Some isotope shift measurements for Ba and Ga
have also been performed.
Key words: Laser spectroscopy, radiative lifetimes, hyperfine
structure, doubly excited states, black-body transitions, singlet-
triplet mixing, alkaline-earth atoms, group IIIA atoms, Lande
factors, quantum beats, isotope shift, Stark shift, dye laser,
delayed-coincidence, time resolved, collimated atomic-beam. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2260526
- author
- Levinson, Claes
- supervisor
- opponent
-
- unknown], [unknown
- publishing date
- 1985
- type
- Thesis
- publication status
- published
- subject
- keywords
- Fysicumarkivet A:1985:Levison
- publisher
- Divsion of Atomic Physics, Department of Physics, Lund University
- defense location
- n/a
- defense date
- 1985-01-01 01:01:00
- language
- English
- LU publication?
- no
- id
- 1bd81885-800d-420f-992b-2c4eceb29313 (old id 2260526)
- date added to LUP
- 2016-04-04 10:36:21
- date last changed
- 2022-08-18 13:11:55
@phdthesis{1bd81885-800d-420f-992b-2c4eceb29313,
abstract = {{Studies of natural radiative lifetimes and hyperfine structure have<br/><br>
been performed for group IIA and IIIA atoms. Different laser<br/><br>
spectroscopic techniques such as PUMOLS, time-resolved laser spectroscopy,<br/><br>
using transient recorder, and collimated atomic-beam<br/><br>
experiments have been used. These methods employ cw or pulsed dye<br/><br>
laser systems.<br/><br>
The lifetime measurements revealed several cases in barium and<br/><br>
strontium where the lifetimes are being perturbed by doubly excited<br/><br>
states. Some of the data have been interpreted with MQDT. Influences<br/><br>
of induced black-body transitions have also been observed. Different<br/><br>
lifetime values within hyperfine structure multiplets have been shown<br/><br>
experimentally for the first time. Hyperfine structure data from<br/><br>
measurements in Al, Ga and In, have been used as a sensitive test for<br/><br>
MBPT calculations for relatively heavy elements. Measurements of Lande<br/><br>
factors in Ba using quantum-beat spectroscopy and optical double<br/><br>
resonance were performed, allowing a refinement of the MQDT analysis<br/><br>
for the 1130 2 sequences. Some isotope shift measurements for Ba and Ga<br/><br>
have also been performed.<br/><br>
Key words: Laser spectroscopy, radiative lifetimes, hyperfine<br/><br>
structure, doubly excited states, black-body transitions, singlet-<br/><br>
triplet mixing, alkaline-earth atoms, group IIIA atoms, Lande<br/><br>
factors, quantum beats, isotope shift, Stark shift, dye laser,<br/><br>
delayed-coincidence, time resolved, collimated atomic-beam.}},
author = {{Levinson, Claes}},
keywords = {{Fysicumarkivet A:1985:Levison}},
language = {{eng}},
publisher = {{Divsion of Atomic Physics, Department of Physics, Lund University}},
title = {{Laser Spectroscopic Studies of Radiative Lifetime and Hyperfine Structure for Group IIA and IIIA Atoms}},
url = {{https://lup.lub.lu.se/search/files/5578431/2302137.pdf}},
year = {{1985}},
}