Electron Wave Packet Interference in Atomic Inner-Shell Excitation

We report the observation of quantum interference between electron wave packets launched from the inner-shell 4d orbital of the Xe atom. Using pairs of femtosecond radiation wave packets from a synchrotron light source, we obtain time-domain interferograms for the inner-shell excitations. This appro...

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Bibliographic Details
Published in:	Physical review letters Vol. 126; no. 11; p. 113202
Main Authors:	Kaneyasu, T, Hikosaka, Y, Fujimoto, M, Iwayama, H, Katoh, M
Format:	Journal Article
Language:	English
Published:	United States American Physical Society 19-03-2021
Subjects:	Augers Decay Electrons Excitation Inertia Interference Light sources Synchrotrons Wave packets
Online Access:	Get full text
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Summary:	We report the observation of quantum interference between electron wave packets launched from the inner-shell 4d orbital of the Xe atom. Using pairs of femtosecond radiation wave packets from a synchrotron light source, we obtain time-domain interferograms for the inner-shell excitations. This approach enables the experimental verification and control of the quantum interference between the electron wave packets. Furthermore, the femtosecond Auger decay of the inner-shell excited state is tracked. To the best of our knowledge, this is the first observation of wave packet interference in an atomic inner-shell process, and also the first time-resolved experiment on few-femtosecond Auger decay using a synchrotron light source.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0031-9007 1079-7114
DOI:	10.1103/physrevlett.126.113202