Measured lifetimes of metastable levels of Mn X, Mn XI, Mn XII, and Mn XIII ions
Loading...
Date
1999
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Abstract
An ion storage technique, based on the capture of metastable multiply charged ions from an external ion source into a Kingdon ion trap, has been used to measure the lifetimes of eight metastable levels of Mn ions with 3s(2)3p(k) configurations, k = 1 - 4. Although several lifetime calculations exist, some of the transition wavelengths have not been previously observed in any source. The lifetimes range from 1.5-35 ms. A measurement precision as good as 0.9% was obtained in favorable cases. The measured lifetimes are tau(Mn X, 3s(2)3p(4) S-1(0)) = 2.1 +/- 0.3, tau(Mn X, 3s(2)3p(4) D-1(2)) = 18.02 +/- 0.16, tau(Mn XI, 3s(2)3p(3) P-2(3/2)) = 3.0 +/- 0.2, tau(Mn XI, 3s(2)3p(3) P-2(1/2)) = 6.17 +/- 0.29, tau(Mn XI, 3s(2)3p(3) D-2(3/2)) = 35.1 +/- 1.43, tau(Mn XII. 3S(2)3p(2) S-1(0)) = 1.5 +/- 0.2, tau(Mn XII, 3s(2)3p(2) D-1(2)) = 11.16 +/- 0.10, and tau(Mn XII, 3s(2)3p P-2(3/2)) = 31.32 +/- 1.82 ms. These results are compared with the existing theoretical calculations, which have estimated uncertainties no better than 25%. [S1050-2947(99)102903-0].
Description
Journals published by the American Physical Society can be found at http://publish.aps.org/
Keywords
TRANSITION-PROBABILITIES, FORBIDDEN LINES, CONFIGURATION, Optics, Physics, Atomic, Molecular and Chemical
Citation
D. P. Moehs and David A. Church. Phys.Rev.A 59 1884-1889 1999. "Copyright (1999) by the American Physical Society."