期刊
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
卷 48, 期 20, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-4075/48/20/204005
关键词
nonlinear interaction in the extreme ultraviolet; interatomic coulombic decay; ultrafast dynamics
资金
- Alexander von Humboldt Foundation (Project 'Tirinto')
- Italian Ministry of Research [RBID08CRXK]
- European Research Council under the European Community's Seventh Framework Programme/ERC grant [227355-ELYCHE, 227597-ICD]
- State Hessen Initiative LOEWE within the focus project ELCH
- MEXT
- Tagen project by IMRAM
- JSPS
- European Union [641789 MEDEA]
The recent availability of intense and ultrashort extreme ultraviolet sources opens up the possibility of investigating ultrafast electronic relaxation processes in matter in an unprecedented regime. In this work we report on the observation of two-photon excitation of interatomic Coulombic decay (ICD) in neon dimers using the tunable intense pulses delivered by the free electron laser FERMI. The unique characteristics of FERMI (narrow bandwidth, spectral stability, and tunability) allow one to resonantly excite specific ionization pathways and to observe a clear signature of the ICD mechanism in the ratio of the ion yield created by Coulomb explosion. The present experimental results are explained by ab initio electronic structure and nuclear dynamics calculations.
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