Abstract
The mean life of the metastable state of the ion has been determined by measuring the decay length of the radiation emerging from a 20-MeV beam of highly stripped oxygen ions. The result is which compares favorably with our earlier measurement of (6 ± 1) × . Mixing of singlet levels above , a feature of some recent calculations of this lifetime, is needed to bring about overlap of theoretical and experimental results. Additional information concerning excitation of one- and two- electron ions in such beams is presented.
- Received 20 April 1970
DOI:https://doi.org/10.1103/PhysRevA.2.1189
©1970 American Physical Society