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, kϭ1 -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

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... red lifetimes are (Mn X, 3s 2 3p 4 1 S 0 )ϭ2.1Ϯ0.3, (Mn X, 3s 2 3p 4 1 D 2 )ϭ18.02Ϯ0.16, (Mn XI, 3s 2 3p 3 2 P 3/2 )ϭ3.0 Ϯ0.2, (Mn XI, 3s 2 3p 3 2 P 1/2 )ϭ6.17Ϯ0.29, (Mn XI, 3s 2 3p 3 2 D 3/2 )ϭ35.1Ϯ1.43, (Mn XII, 3s 2 3p 2 1 S 0 ) ϭ1.5Ϯ0.2, (Mn XII, 3s 2 3p 2 1 D 2 )ϭ11.16Ϯ0.10, and (Mn XIII, 3s 2 3p 2 P 3/2 )ϭ31.32Ϯ1.82 ms. These results are compared with the existing theoretical calculations, which have estimated uncertainties no better than 25%.