Measurement of the Metastable Lifetime for the 2s22p2 1S0 Level in O2+

Details Measurement of the Metastable Lifetime for the 2s22p2 1S0 Level in O2+ Measurement of the Metastable Lifetime for the 2s22p2 1S0 Level in O2+

Feb 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004apj...602.1075s&link_type=abstract

The Astrophysical Journal, Volume 602, Issue 2, pp. 1075-1078.

Astronomy and Astrophysics

Astronomy

6

Atomic Data, Atomic Processes

Scientific paper

The radiative lifetime of the 2s22p2 1S0 level in O2+ has been measured via the magnetic-dipole (M1) transition 2s22p21S0-->3P1 at 232.17 nm. Data were recorded in a Kingdon trap, with the source of ions a 14 GHz electron cyclotron resonance ion source. The lifetime of the 1S0 level was found to be 540+/-27 ms. This is in good agreement with a previous measurement and with a number of theoretical calculations. Metastable lifetimes, when combined with collisional excitation rates, can provide a diagnostic for electron density Ne in a stellar or solar plasma.

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