Th II meanlife and the solar thorium abundance.
Abstract
Summary. The meanlife of the 24874 level in Th ii has been measured by the beam-foil teclinique to be 2t +3 ns. The adopted solar thorium abundance is reduced by a factor of four on the basis on this lifetime and is now in agreement with the meteoritic abundance. Key words: lifetime Th solar abundance
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- December 1975
- Bibcode:
- 1975A&A....45..237A
- Keywords:
-
- Abundance;
- Photosphere;
- Radiative Lifetime;
- Solar Atmosphere;
- Thorium;
- Absorption Spectra;
- Atomic Energy Levels;
- Interferometry;
- Ion Beams;
- Line Spectra;
- Meteoritic Composition;
- Transition Probabilities;
- Solar Physics