Physics
Scientific paper
Jun 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984phys...29..551w&link_type=abstract
Physica Scripta (ISSN 0031-8949), vol. 29, no. 6, June 1984, p. 551-555. Research supported by the Naturvetenskapliga Forsknings
Physics
17
Abundance, Neodymium, Photosphere, Radiative Lifetime, Solar Atmosphere, Atomic Energy Levels, Ion Beams, Laser Outputs, Meteoritic Composition, Solar Spectra
Scientific paper
The intracavity-excitation laser/ion-beam technique is used to measure the radiative lifetimes of eight levels of Nd II, and the results are applied to solar-Nd-abundance calculations. The experimental apparatus includes an isotope separator producing a 30-keV 100-400-nA 200 km/s beam of singly charged Nd-142 ions, a broadband dye laser driven by an Ar laser and equipped with an internal excitation chamber and a 150-Hz chopper, and a detector comprising an f/3.5 broadband monochromator and a liquid-N2-cooled photomultiplier tube. The results are presented in tables and used to correct published gf values based on arc spectra. The revised gf values are combined with high-resolution solar spectra and current solar-atmosphere models to calculate the approximate solar abundance of Nd. For the model of Holweger and Mueller (1974), A(Nd) = 1.47 + or - 0.07, in good agreement with meteoritic values and about twice that determined by photospheric analysis.
Ahnesjo A.
Arnesen A.
Hallin R.
McIntyre L.
Nordling C.
No associations
LandOfFree
Radiative lifetimes in Nd II and the solar neodymium abundance does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Radiative lifetimes in Nd II and the solar neodymium abundance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radiative lifetimes in Nd II and the solar neodymium abundance will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1855867