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Radiative lifetime of a bound excited state of Te-
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2004 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 92, no 25, 253002- p.Article in journal (Refereed) Published
Abstract [en]

We report on the first experimental study of the lifetime of a bound excited state of a negative ion. A new experimental technique was developed and used to measure the radiative lifetime of the 5p(5) P-2(1/2) level of Te-. The experiment was performed in a magnetic storage ring, where a laser beam was applied along one of the straight sections. In the experiment the population of the excited J=1/2 level was probed each time the Te- ions passed through the laser field. A decay curve was built up by sampling the population of the excited level of the Te- ions as a function of time after injection into the ring. A multiconfiguration Dirac-Hartree-Fock calculation was performed in conjunction with the experiment. The calculation yielded a radiative lifetime of 0.45 s, in excellent agreement with the measured value of 0.42(5) s.

Place, publisher, year, edition, pages
2004. Vol. 92, no 25, 253002- p.
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Physical Sciences
URN: urn:nbn:se:kth:diva-41894DOI: 10.1103/PhysRevLett.92.253002ISI: 000222266100018ScopusID: 2-s2.0-3543114977OAI: diva2:450819
QC 20111022Available from: 2011-10-22 Created: 2011-10-03 Last updated: 2011-10-22Bibliographically approved

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Österdahl, Fabian
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