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29 March 2024 |
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Radiative lifetime of a bound excited state of Te- | A Ellmann
; P Schef
; P Lundin
; P Royen
; S Mannervik
; K Fritioff
; P Andersson
; D Hanstorp
; C Froese Fischer
; F Osterdahl
; D J Pegg
; N D Gibson
; H Danared
; A Källberg
; | Date: |
25 Jun 2004 | Journal: | Phys Rev Lett, 92 (25 Pt 1), 253002 | Abstract: | 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) (2)P(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. | Source: | PubMed, pmid15245002 | Services: | Forum | Review | Favorites |
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