Description
chairman: B.Patterson
Thomas Tschentscher
(European XFEL Hamburg)
9/16/11, 2:30 PM
XFEL Experiments in Condensed Matter
Talk
Updated radiation parameters and beamline layouts for the European XFEL facility under construction in Hamburg, Germany, will be presented. Furthermore, initial thoughts are introduced about the layout of the scientific instruments, with emphasis on applications in condensed-matter. The current status of condensed-matter research at FLASH and the LCLS will be reviewed and an outlook to major...
Dr
Sven Reiche
(Paul Scherrer Institut, SwissFEL group, 5232-Villigen-PSI, Switzerland)
9/16/11, 2:50 PM
XFEL Experiments in Condensed Matter
Talk
Free-electron Lasers are radiation sources, based on the interaction of an relativistic electron beam with its radiation field within an undulator. The process of a collective instability causes the coherent emission at a freely tunable wavelength. As radiation devices FELs surpasses 3rd generation sources in terms of peak brilliance and opens up new classes of experiments such as e.g....
Dr
Luc Patthey
(Paul Scherrer Institut)
9/16/11, 3:10 PM
XFEL Experiments in Condensed Matter
Talk
In a hole-doped Mott insulator, spatially-ordered, nano-scale spin and charge patterns can emerge and form “stripes”. In this phase, holes form one-dimensional charge stripes, which serve as anti-phase domain walls between anti-ferromagnetically ordered spin stripes. While the stripe phase has been extensively studied in thermal equilibrium, its dynamics remain largely unexplored. Using the...
Dr
Bill Pedrini
(Paul Scherrer Institut)
9/16/11, 3:30 PM
XFEL Experiments in Condensed Matter
Talk
In 1977, Kam proposed the cross-correlation method for 3D structure determination from X-ray diffraction images of multiple, identical, randomly oriented particles. The main obstacle to the practical application at the nanoscale, namely the requirement of short but intense incoming X-ray pulses, may be overcome with Free Electron Laser sources.
We present the results of pilot experiments...
Dr
Ralf Roehlsberger
(DESY Hamburg)
9/16/11, 4:10 PM
XFEL Experiments in Condensed Matter
Talk
Nonlinear effects in the light-matter interaction arise when the optical properties of the medium are modified due to the presence of photons. The key quantity that determines these effects is the photon degeneracy, i.e., the number of photons per mode of the radiation field. At very high photon numbers, the light modulates the microscopic charge distribution, leading to phenomena like...
Dr
Peter Derlet
(Paul Scherrer Institut)
9/16/11, 4:30 PM
XFEL Experiments in Condensed Matter
Talk
Thermal fluctuations at the atomic scale play a fundamental role in the dynamics of microscopic processes such as magnetism, transport and micro-structural evolution. Langevin dynamics can sometimes provide a description of such phenomenon and its mathematical realization constitutes one example of a stochastic differential equation. In this talk, the Langevin approach is introduced and...
Bruce Patterson
(Paul Scherrer Institut)
9/16/11, 4:50 PM
Prof.
T Ishikawa
(Riken Harima Institute, Sayo, Hyogo 679-5148, Japan)
9/16/11, 5:00 PM
XFEL Experiments in Condensed Matter
Talk
A progress report will be given on the commissioning phase of the Japanese X-ray laser project SACLA, located at the SPRING-8 campus.
