Double Core-Hole Production in N{sub 2}: Beating the Auger Clock

Journal Article · Fri Aug 20 00:00:00 EDT 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.105.083005· OSTI ID:21470975

Fang, L; Berrah, N ^[1]; Hoener, M ^[1]; Gessner, O; Kornilov, O ^[2]; Tarantelli, F ^[3]; Pratt, S T; Kanter, E P ^[4]; Buth, C ^[5]; Guehr, M; Bucksbaum, P H; Cryan, J; Glownia, M ^[5]; Bostedt, C; Bozek, J D; Coffee, R ^[6]; Chen, M ^[7]; Kukk, E ^[8]; Leone, S R ^[2]

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1. Physics Department, Western Michigan University, Kalamazoo, Michigan 49008 (United States)
2. Ultrafast X-ray Science Laboratory, Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
3. Dipartimento di Chimica, Universitadi Perugia, and ISTM-CNR, 06123 Perugia (Italy)
4. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
5. PULSE Institute for Ultrafast Energy Science, SLAC National Accelerator Laboratory, Menlo Park, California 94025 (United States)
6. Linac Coherent Light Source, SLAC National Accelerator Laboratory, Menlo Park, California 94025 (United States)
7. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
8. Department of Physics and Astronomy, University of Turku 20014 Turku (Finland)

We investigate the creation of double K-shell holes in N{sub 2} molecules via sequential absorption of two photons on a time scale shorter than the core-hole lifetime by using intense x-ray pulses from the Linac Coherent Light Source free electron laser. The production and decay of these states is characterized by photoelectron spectroscopy and Auger electron spectroscopy. In molecules, two types of double core holes are expected, the first with two core holes on the same N atom, and the second with one core hole on each N atom. We report the first direct observations of the former type of core hole in a molecule, in good agreement with theory, and provide an experimental upper bound for the relative contribution of the latter type.

• OSTI ID: 21470975
• Journal Information: Physical Review Letters, Vol. 105, Issue 8; Other Information: DOI: 10.1103/PhysRevLett.105.083005; (c) 2010 American Institute of Physics; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
ATOMS
AUGER ELECTRON SPECTROSCOPY
FREE ELECTRON LASERS
HOLES
K SHELL
LIFETIME
LIGHT SOURCES
MOLECULES
PHOTOELECTRON SPECTROSCOPY
PHOTON-ATOM COLLISIONS
PHOTON-MOLECULE COLLISIONS
PHOTONS
PULSES
X RADIATION
ATOM COLLISIONS
BOSONS
COLLISIONS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ELEMENTARY PARTICLES
IONIZING RADIATIONS
LASERS
MASSLESS PARTICLES
MOLECULE COLLISIONS
PHOTON COLLISIONS
RADIATION SOURCES
RADIATIONS
SORPTION
SPECTROSCOPY