Abstract
We report the first observation of magnetic octupole decay in the x-ray spectrum of a highly charged ion. Detailed analyses of the low-energy region of the n=3→4 spectra of nickel-like and show an intense line at 2558.7±0.2 and 2689.3±0.2 eV, respectively, that is attributed to the transition (34s→(3. Calculations indicate that the line is almost exclusively excited by indirect processes such as radiative cascades and electron capture.
- Received 9 July 1991
DOI:https://doi.org/10.1103/PhysRevLett.67.2272
©1991 American Physical Society