Transition Probabilities for the 1815 and 3344 Å Forbidden Lines of NE III

Details Transition Probabilities for the 1815 and 3344 Å Forbidden Lines of NE III Transition Probabilities for the 1815 and 3344 Å Forbidden Lines of NE III

Apr 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apj...533l.179d&link_type=abstract

The Astrophysical Journal, Volume 533, Issue 2, pp. L179-L182.

Astronomy and Astrophysics

Astronomy

12

Atomic Data, Techniques: Spectroscopic, Ultraviolet: General

Scientific paper

We have measured the radiative lifetime of the 2s22p4 1S0 metastable level of Ne2+ (Ne III) to be 223+/-11 ms at the 90% confidence level by observing the photons emitted at 1815 Å by a decaying population of 1S0 Ne2+ ions produced and stored in a radio-frequency ion trap. This is the first lifetime measurement for an excited term of a ground configuration ion in the second row of the periodic table. The transition probabilities (A-values) for the forbidden transitions in the ground configurations of these ions are required for astrophysical line-ratio diagnostics. Using calculated branching ratios, we estimate that A(λ1815)=1.94+/-0.17 and A(λ3344)=2.55+/-0.19 s-1. Because these numbers have a sum with an experimentally determined uncertainty of 5%, they will provide more accurate results than the calculated A-values for determining electron temperature and density from astrophysical Ne III line ratios.

Affiliated with

Also associated with

No associations

Rating

Transition Probabilities for the 1815 and 3344 Å Forbidden Lines of NE III does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Transition Probabilities for the 1815 and 3344 Å Forbidden Lines of NE III, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transition Probabilities for the 1815 and 3344 Å Forbidden Lines of NE III will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-751213