Abstract
We have measured the electron-impact excitation cross sections out of the two metastable levels of Kr into the ten levels of the configuration. For a common final level, the peak excitation cross sections out of the two individual metastable levels are found to differ by 1 to 2 orders of magnitude. This is explained by the special features of the electronic structure of the two configurations involved. The peak cross sections are 10 to 1600 times larger than the corresponding peak cross sections out of the ground state.
- Received 14 October 2004
DOI:https://doi.org/10.1103/PhysRevLett.94.163202
©2005 American Physical Society