Radiative lifetimes in neutral and singly-ionized manganese have been measured from beam-foil spectra in the region 2 000-5 000 Å, using 249 keV Mn +++ ions from an electromagnetic isotope separator. Several of the transitions have been used in the determination of the Mn abundance in the solar photosphere. Our measured lifetimes for Mn I levels are 2-6 times longer than those inferred by the gf -values of Corliss and Bozman. A markedly better agreement exists between beam-foil data and Warner's results for Mn II terms, but even here the beam-foil lifetimes appear to be significantly longer. Our results are consistent with a recently suggested upward revision of the photospheric Mn abundance from log N Mn = 4.8-4.9 to 5.4.
No takes yet. Share an insight, caveat, or question.
Martinson et al. (1973) studied this question.
Synapse has enriched one closely related paper. Consider it for comparative context: