Radiative Lifetime of the Long-Lived 1s2s 3S1 State in Heliumlike Neon by Electron Beam Excitation of Trapped Ions

Details Radiative Lifetime of the Long-Lived 1s2s 3S1 State in Heliumlike Neon by Electron Beam Excitation of Trapped Ions Radiative Lifetime of the Long-Lived 1s2s 3S1 State in Heliumlike Neon by Electron Beam Excitation of Trapped Ions

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993phrvl..71.2196w&link_type=abstract

Physical Review Letters, v. 71, p. 2196

Physics

52

Absolute And Relative Intensities, Electronic Excitation And Ionization Of Atoms, Electron-Ion Scattering, Excitation And Ionization

Scientific paper

We report a technique for measuring the lifetimes of long-lived excited levels in highly charged ions that fall into the range from 10^-2 to 10^-7 sec, inaccessible to existing methods. Employing a fast-switching electron beam to produce and excite electrostatically trapped ions, lifetimes are determined by observing the fluorescent decay of metastable levels. A value of 90.5+/-1.5 usec is obtained for the 1s2s 3S1 --> 1s1s 1S0 transition in heliumlike neon, in good agreement with theoretical predictions of 91.1 and 92.0 usec.

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