Direct observation of three-electron collective decay in a resonant Auger process

Abstract

Using a multi-electron coincidence technique combined with synchrotron radiation we demonstrate the real existence of the elusive three-electron collective process in resonant Auger decay of Kr. The three-electron process is about 40 times weaker than the competing two-electron processes.

Keywords

• collective Auger decay
• multi-electron coincidence
• inner shell vacancies