Measurement of the atomic lifetime of Kr ii 5p 4D7/2o and Xe ii 6p 4D5/2o using the cascade-photon-coincidence technique
Physical Review A, ISSN: 1050-2947, Vol: 45, Issue: 7, Page: 4452-4461
1992
- 12Citations
- 2Captures
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Article Description
A high-efficiency cascade-photon-coincidence lifetime-measuring apparatus has been used to study the 5d 4F9/2 5p 4D7/2o5s 4P5/2 cascade in Kr ii and the 6d 4F7/26p 4D5/2o6s 4P3/2 cascade in Xe ii. A neutral atomic beam was excited and ionized by electron impact, and the spontaneously emitted photons were collected by an ellipsoidal mirror and detected by fast photomultipliers provided with narrow-band interference filters. The spectrum of time delays was acquired by a time-to-amplitude converter and multichannel pulse-height analyzer. The lifetime of the Kr ii 5p 4D7/2o state was found to be 7.0040.053 ns. This is in agreement with two previous high-precision measurements and represents an improvement in precision by a factor of 3.6. The Xe ii 6p 4D5/2o lifetime was found to be 9.4940.067 ns. This result agrees with several measurements of lower accuracy, but is in clear disagreement with two previous measurements claiming high precision, which disagree with each other as well. © 1992 The American Physical Society.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0000475575&origin=inward; http://dx.doi.org/10.1103/physreva.45.4452; http://www.ncbi.nlm.nih.gov/pubmed/9907520; https://link.aps.org/doi/10.1103/PhysRevA.45.4452; http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevA.45.4452/fulltext; http://link.aps.org/article/10.1103/PhysRevA.45.4452
American Physical Society (APS)
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