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New Journal of Physics, ISSN 1367-2630, 02/2009, Volume 11, Issue 2, p. 023029
FLASH, the Free-electron LASer in Hamburg, is a worldwide unique source for extremely bright ultra-short laser-like pulses tunable in a wide spectral range in... 
VACUUM | PHYSICS, MULTIDISCIPLINARY | RADIATION | EXTREME-ULTRAVIOLET | SOLIDS | PULSES
Journal Article
Chemical Physics Letters, ISSN 0009-2614, 2001, Volume 339, Issue 3, pp. 197 - 202
We report on measurements of X-ray excited charge transfer luminescence occurring in Yb -doped yttrium aluminium garnet (YAG:Yb) and ytterbium aluminium garnet... 
YB-YAG | LASER | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL
Journal Article
Physical Review A - Atomic, Molecular, and Optical Physics, ISSN 1050-2947, 10/2013, Volume 88, Issue 4
The photolysis of the hydronium cation H3O+ has been studied at the extreme ultraviolet wavelengths of 35.56 +/- 0.24 nm (34.87 +/- 0.24 eV) and 21.85 +/- 0.17... 
TRANSITION | STATES | SPECTROSCOPY | PHOTODISSOCIATION REGIONS | CLOUDS | LASER | LINE | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | CHEMISTRY | ION | OPTICS | WATER
Journal Article
Physical Review Letters, ISSN 0031-9007, 08/2014, Volume 113, Issue 6, p. 067001
We study the electronic screening mechanisms of the effective Coulomb on-site repulsion in hole-doped Sr14Cu24O41 compared to undoped La6Ca8Cu24O41 using... 
CORRELATED SYSTEMS | RAMAN-SCATTERING | EXCITATIONS | SPECTROSCOPY | PHYSICS, MULTIDISCIPLINARY | LIGHT | SUPERCONDUCTORS | SR14CU24O41 | Legs | Coulomb friction | Inelastic scattering | Energy measurement | X-rays | Electronics | Copper | Ladders
Journal Article
Physical Review A - Atomic, Molecular, and Optical Physics, ISSN 1050-2947, 08/2012, Volume 86, Issue 2
Single and double photodetachment of the oxygen anion O- have been investigated at 41.7 nm (29.8 eV) in a crossed beams experiment using intense photon pulses... 
THRESHOLD | H ION | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | DETACHMENT | INNER-SHELL PHOTODETACHMENT | OPTICS | 2-ELECTRON PHOTOIONIZATION | CROSS-SECTION | RESONANCES | NEGATIVE-IONS
Journal Article
New Journal of Physics, ISSN 1367-2630, 03/2010, Volume 12, Issue 3, p. 035003
Coherent x-ray imaging represents a new window to imaging non-crystalline, biological specimens at unprecedented resolutions. The advent of free-electron... 
PHASE RETRIEVAL | HOLOGRAPHY | PHYSICS, MULTIDISCIPLINARY | FIELD | DIATOMS | RAY | MICROSCOPY
Journal Article
Physical Review A - Atomic, Molecular, and Optical Physics, ISSN 1050-2947, 01/2013, Volume 87, Issue 1
The photofragmentation of the water cation H2O+ through dicationic states has been studied at 35.0 +/- 0.2 nm (35.4 +/- 0.3 eV) and 21.8 +/- 0.2 nm (56.8 +/-... 
DOUBLY-CHARGED WATER | PHOTOIONIZATION | ELECTRON | DISSOCIATION | SPECTROSCOPY | MULTIPLE IONIZATION | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | OH | SPECTRUM | OPTICS | INTERSTELLAR CLOUDS | PHOTODISSOCIATION
Journal Article
Physical Review A - Atomic, Molecular, and Optical Physics, ISSN 1050-2947, 08/2009, Volume 80, Issue 1
Journal Article
Proceedings of SPIE - The International Society for Optical Engineering, ISSN 0277-786X, 2010, Volume 7802
We present the design and characterization of the spectrometer to be used at the FLASH facility (DESY, Hamburg) to characterize the spectral properties of... 
Free-electron-laser | Grazing-incidence spectrometer | Extreme-ultraviolet | Charge coupled devices | Gratings (spectra) | Harmonics | Design engineering | Spectrometers | X-rays | Diffraction gratings | Grooves | Spectra
Conference Proceeding
PHYSICAL REVIEW LETTERS, ISSN 0031-9007, 12/2010, Volume 105, Issue 25
Photofragmentation of the protonated water dimer H+(H2O)(2), a fundamental system both in aqueous solutions and gas-phase water clusters, has been studied at... 
H5O2 | CLUSTERS | PHYSICS, MULTIDISCIPLINARY | PROTONATED WATER DIMER
Journal Article
Optics Express, ISSN 1094-4087, 06/2011, Volume 19, Issue 12, pp. 11059 - 11070
The imaging of hydrated biological samples - especially in the energy window of 284-540 eV, where water does not obscure the signal of soft organic matter and... 
ULTRAVIOLET | OPTICS | OPERATION | MONOLAYERS | CARBON NANOSHEETS | Microscopy - methods | Seawater - microbiology | Animals | Lasers | X-Rays | Bacteria - cytology | Water - chemistry | Holography - methods | Rats | Fibroblasts - cytology | Nanostructures | Electrons
Journal Article
Optical Materials, ISSN 0925-3467, 2003, Volume 24, Issue 1, pp. 267 - 274
Charge transfer fluorescence and f-f luminescence in ytterbium compounds were studied. Measurements of the luminescence spectra and quantum yield in the... 
ALUMINUM | EXCITATIONS | GARNETS | MATERIALS SCIENCE, MULTIDISCIPLINARY | CRYSTALS | IONS | YB3 | OPTICS | PROSPECTS | Condensed Matter | Physics
Journal Article
Journal of Physics: Condensed Matter, ISSN 0953-8984, 09/2005, Volume 17, Issue 36, pp. 5587 - 5594
For single crystals of YAG-15 mol% Yb, LuAG-15 mol% Yb and YAP-8 mol% Yb the temperature dependence of the charge-transfer (CT) and f-f luminescence of Yb3+... 
ALUMINUM | PHYSICS, CONDENSED MATTER | ELECTRON EXCITATIONS | CRYSTALS | RELAXATION | IONS | PROSPECTS
Journal Article
ISSN 0556-2791, 2013
The photofragmentation of the water cation $H_2O^+$ through dicationic states has been studied at 35.0 ± 0.2 nm (35.4 ± 0.3 eV) and 21.8 ± 0.2 nm (56.8 ± 0.5... 
Journal Article
Journal Article
Physical Review Letters, ISSN 0031-9007, 06/2007, Volume 98, Issue 22, p. 223202
Molecular photofragmentation has been studied by event imaging on HeH+ ions at 32 nm (38.7 eV) in a fast ion beam crossed with the free-electron laser in... 
SINGLET SIGMA-STATES | RECOMBINATION | DESTRUCTION | CONFIGURATION-INTERACTION | EARLY UNIVERSE | DISSOCIATION | PHYSICS, MULTIDISCIPLINARY | WAVELENGTH | MOLECULAR ION | NEBULAE | TRANSITIONS
Journal Article
Journal of Physics B: Atomic, Molecular and Optical Physics, ISSN 0953-4075, 10/2010, Volume 43, Issue 19, p. 194008
Laser spectroscopy, widely applied in physics and chemistry, is extended into the soft x-ray region for the first time. Resonant fluorescence excitation of... 
BEAM | RESONANCE | PHYSICS, ATOMIC, MOLECULAR & CHEMICAL | TRANSITION ENERGIES | HEAVY-IONS | LAMB-SHIFT MEASUREMENT | PRECISION-MEASUREMENTS | HELIUM-LIKE | SPECTRUM | OPTICS | HYDROGENLIKE | LINES
Journal Article
Physical Review Letters, ISSN 0031-9007, 12/2010, Volume 105, Issue 25, p. 253003
Photofragmentation of the protonated water dimer H+(H2O)_{2}, a fundamental system both in aqueous solutions and gas-phase water clusters, has been studied at... 
Journal Article
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