Abstract
The high-resolution photoelectron spectra of were obtained via the slow-electron velocity-map imaging method. The electron affinity of cobalt element was determined to be or 662.256(46) meV. The fine structure of was well resolved. The fine-structure intervals and were found to be and , respectively. The accuracy was improved by a factor of more than ten with respect to the previous laser photodetachment threshold measurement.
- Received 23 March 2016
DOI:https://doi.org/10.1103/PhysRevA.93.052508
©2016 American Physical Society