TY  - JOUR
AU  - Mazza, Tommaso
AU  - Ilchen, Markus
AU  - Kiselev, M. D.
AU  - Gryzlova, E. V.
AU  - Baumann, Thomas
AU  - Boll, Rebecca
AU  - De Fanis, A.
AU  - Grychtol, P.
AU  - Montaño, J.
AU  - Music, Valerija
AU  - Ovcharenko, Y.
AU  - Rennhack, N.
AU  - Rivas, D. E.
AU  - Schmidt, Philipp
AU  - Wagner, Rene
AU  - Ziolkowski, Pawel
AU  - Berrah, N.
AU  - Erk, Benjamin
AU  - Johnsson, P.
AU  - Küstner-Wetekam, C.
AU  - Marder, L.
AU  - Martins, Michael
AU  - Ott, Christian
AU  - Pathak, Shashank
AU  - Pfeifer, Thomas
AU  - Rolles, Daniel
AU  - Zatsarinny, O.
AU  - Grum-Grzhimailo, A. N.
AU  - Meyer, Michael
TI  - Mapping Resonance Structures in Transient Core-Ionized Atoms
JO  - Physical review / X
VL  - 10
IS  - 4
SN  - 2160-3308
CY  - College Park, Md.
PB  - APS
M1  - PUBDB-2021-00009
SP  - 041056
PY  - 2020
AB  - The nature of transient electronic states created by photoabsorption critically determines the dynamics of the subsequently evolving system. Here, we investigate K-shell photoionized atomic neon by absorbing a second photon within the Auger-decay lifetime of 2.4 fs using the European XFEL, a unique high-repetition-rate, wavelength-tunable x-ray free-electron laser. By high-resolution electron spectroscopy, we map out the transient Rydberg resonances unraveling the details of the subsequent decay of the hollow atom. So far, ultra-short-lived electronic transients, which are often inaccessible by experiments, were mainly inferred from theory but are now addressed by nonlinear x-ray absorption. The successful characterization of these resonances with femtosecond lifetimes provides the basis for a novel class of site-specific, nonlinear, and time-resolved studies with strong impact for a wide range of topics in physics and chemistry. 
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000600284700002
DO  - DOI:10.1103/PhysRevX.10.041056
UR  - https://bib-pubdb1.desy.de/record/453555
ER  -