Abstract
The spectrum of Kr viii has been observed between 180 and 2000 Å by using foil excitation of 2.5-3.5-MeV krypton ions. Twenty new transitions have been classified and eleven new excited-state energies have been determined within the shells. The ionization potential is derived to be 1015 800±200 . The excited-state energies and fine structures are compared with recent relativistic Hartree-Fock calculations. The -state lifetime has been measured by performing a simultaneous analysis of decay data for the level and for its dominant cascade-repopulating levels. The lifetime is found to be 30% shorter than previously measured values and is in excellent agreement with the result of a recent multiconfiguration Hartree-Fock calculation. The source of the discrepancy between this result and earlier measurements is discussed.
- Received 8 March 1979
DOI:https://doi.org/10.1103/PhysRevA.21.771
©1980 American Physical Society