Radiative Lifetime of a Bound Excited State of Te-
Stockholm University, Faculty of Science, Department of Physics2004 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 92, no 25, 253002- p.Article in journal (Refereed) Published
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 5p5 2P1/2 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.
IdentifiersURN: urn:nbn:se:su:diva-25165DOI: 10.1103/PhysRevLett.92.253002OAI: oai:DiVA.org:su-25165DiVA: diva2:199020
Part of urn:nbn:se:su:diva-77682008-05-272008-05-202010-10-21Bibliographically approved