期刊
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
卷 48, 期 24, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/0953-4075/48/24/244003
关键词
multiple ionization processes; double core hole; covariance mapping
资金
- Swedish Research Council
- Goran Gustafsson Foundation (UU/KTH)
- Knut and Alice Wallenberg Foundation, Sweden
- Swedish Institute (SI)
- EPSRC, UK [EP/I032517/1]
- MIUR, Italy [FIRB-RBAP045JF2, FIRB-RBAP06AWK3]
- MEXT
- JSPS
- U.S. Department of Energy of Science, Basic Energy Science, Chemical Division
- U.S. Department of Energy of Science, Basic Energy Science, Geosciences Division
- U.S. Department of Energy of Science, Basic Energy Science, Biological Division
- European Union through the Marie Curie Actions
- Austrian Science Fund (FWF, Erwin Schrodinger Fellowship) [J 3299-N20]
- French ANR (Agence Nationale de la Recherche)
- EPSRC [EP/F034601/1, EP/I032517/1] Funding Source: UKRI
- Austrian Science Fund (FWF) [J 3299] Funding Source: researchfish
- Engineering and Physical Sciences Research Council [EP/I032517/1, EP/F034601/1] Funding Source: researchfish
- Grants-in-Aid for Scientific Research [15K04755, 25108003] Funding Source: KAKEN
Competing multi-photon ionization processes, some leading to the formation of double core hole states, have been examined in 4-aminophenol. The experiments used the linac coherent light source (LCLS) x-ray free electron laser, in combination with a time-of-flight magnetic bottle electron spectrometer and the correlation analysis method of covariance mapping. The results imply that 4-aminophenol molecules exposed to the focused x-ray pulses of the LCLS sequentially absorb more than two x-ray photons, resulting in the formation of multiple core holes as well as in the sequential removal of photoelectrons and Auger electrons (so-called PAPA sequences).
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