The radiative lifetime of the 5S(0)2 metastable level of O(2+)

Details The radiative lifetime of the 5S(0)2 metastable level of O(2+) The radiative lifetime of the 5S(0)2 metastable level of O(2+)

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...281..477j&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 281, June 1, 1984, p. 477-481. Research supported by the Smithsonian Instit

Astronomy and Astrophysics

Astrophysics

24

Metastable State, Molecular Ions, Oxygen Ions, Radiative Lifetime, Electron Bombardment, Emission Spectra, Gas Pressure, Ion Traps (Instrumentation), Line Spectra, Time Dependence, Transition Probabilities

Scientific paper

The radiative lifetime of the 5S20 metastable level of O++ has been measured to be 1.22±0.08 ms at the 90% confidence level by observing the 2s22p2 3P <- 2s2p3 5S0 intersystem line emission at 1660.8 and 1666.2 Å. The measured lifetime is shorter than most calculated values; however there is agreement with two such values within the combined limits of uncertainty. The lifetime of the O++ metastable level is related to the intersystem line transition probabilities that are needed for determination of electron density and temperature in astrophysical plasmas by methods that use spectral line intensity ratios.

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