Collision induced phenomena in the autoionizing spectrum of Ba and Sr

Broadening and shift of spectral lines in dense Ba and Sr vapor have been studied below and above their first ionization limits. The latter are well-known autoionizing spectral lines that exhibit many different spectral features. However, at larger pressures of noble gases some previously unobserved...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. Conference series 2014-01, Vol.548 (1), p.12054-6
Main Authors: Makdisi, Y, Kokaj, J, Afrousheh, K, Mathew, J, Thomas, N, Pichler, G
Format: Article
Language:English
Subjects:
Autoionization
Barium
Energy conversion
Excitation
Femtosecond
Femtosecond pulsed lasers
Lasers
Line spectra
Noble gases
Physics
Pulsed lasers
Rare gases
Spectra
Spectral lines
Strontium
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Broadening and shift of spectral lines in dense Ba and Sr vapor have been studied below and above their first ionization limits. The latter are well-known autoionizing spectral lines that exhibit many different spectral features. However, at larger pressures of noble gases some previously unobserved or very weak spectral phenomena become visible and their studies might be also linked to energy conversion purposes. Originally, we used nanosecond laser which was scanned in a certain spectral region where the two-photon excitation of autoionization lines occurred. This pulsed laser was overlapped by a mode-locked femtosecond laser and a very sensitive thermionic detection was used to observe autoionizing spectral lines. We also presented our preliminary results with hot strontium vapor excited to the resonance level at 460.7 nm.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/548/1/012054