Spin polarisation of Auger electrons

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Abstract
Auger electrons may be spin polarised either due to a transfer of orientation from the initial inner-shell ionisation process to the decay fragments, or due to relativistic electron-ion final-state interactions. In particular it is shown that polarised Auger electrons can be emitted even if both the ionising projectile and the initial atom have been unpolarised. The analysis of the state of polarisation of electrons from Auger transitions constitutes a new sensitive probe for the investigation of atomic interactions.