Measured Level Lifetimes for the Coronal Transitions of Fe X and Fe XIV

Details Measured Level Lifetimes for the Coronal Transitions of Fe X and Fe XIV Measured Level Lifetimes for the Coronal Transitions of Fe X and Fe XIV

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999apj...516l.111m&link_type=abstract

The Astrophysical Journal, Volume 516, Issue 2, pp. L111-L113.

Astronomy and Astrophysics

Astronomy

25

Atomic Data, Sun: Corona, Techniques: Spectroscopic

Scientific paper

In a laboratory study, the lifetimes of the ^2P levels producing the coronal transitions of Fe X and Fe XIV have been measured. The fluorescence from the metastable levels, which were populated when the ions were produced in a source of multiply charged ions, was studied after the selected ions were injected into an electrostatic ion trap. The results are tau(Fe X, 3s^23p^5 ^2P^o_1/2) = 13.64+/-0.25 ms and tau(Fe XIV, 3s^23p ^2P^o_3/2) = 17.52+/-0.29 ms. The data significantly reduce the uncertainty of the lifetimes when compared with existing theory.

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