84 Works

HFM/EXED - High Magnetic Field Facility for Neutron Scattering

High Magnetic Field Facility for Neutron Scattering consists of two main components: the High Field Magnet (HFM) and the Extreme Environment Diffractometer (EXED). The former is a dedicated 26 T hybrid magnet, built by the HZB in collaboration with the National High Magnetic Field Laboratory (Florida, US). The latter is a time-of-flight instrument optimized for neutron scattering in restricted angular geometry of the magnet.

V2 - Cold Neutron 3-Axis Spectrometer (FLEXX)

The instrument name is derived from the flexibility of the spectrometer parameters which permit non-standard experiments and its use in the development of novel methods. The instrument was upgraded in 2011 and rechristened FLEXX. Its new position at the end of the NL1B guide allows a large coverage in wavevector transfer. The guide itself has been upgraded with m=3 neutron supermirrors to allow more neutrons to be transported from the source to the instrument. In...

E3 - Residual Stress Analysis and Texture Diffractometer

The diffractometer is designed for strain and stress analysis for simple geometric samples as well as for industrial applications and heavy components of arbitrary shape. The diffractometer itself consists of two big omega circles (Ω and 2Θ) with a diameter of 800 mm and upon a translation table (xyz-direction) for sample positioning in vertical and horizontal direction. This set up is installed for handling heavy and/or large samples and components such as impellers or turbines...

E6 - Focusing Powder Diffractometer

E6 uses a horizontally and vertically bent monochromator [1] and an in-pile fan collimator [2, 3]. The fan collimator imitats a vertical slit with adjustable distance to the monochromator. This diffraction geometry achieves a focusing in reciprocal space. At medium resolution, the neutron flux is increased by a factor of two compared with diffractometers that use standard Soller collimators.

V3 - Time-of-Flight Spectrometer (NEAT)

The neutron time-of-flight spectrometer NEAT has a long history of successful applications in the study of dynamics and function of materials. It is best suited to probe dynamic phenomena directly in space and time in the large time domain 10-14 – 10-10 s and on the length scale ranging from 0.05 to up to about 5 nm. To address user community needs for more powerful instrumental capabilities, a concept of full upgrade of NEAT has...

UE48_EMIL - Soft x-ray EMIL Beamline

The UE48_EMIL soft x-ray EMIL Beamline uses an APPLE II undulator with full polarization control to cover the photon energy range ~80eV-1800eV. A toroidal mirror M1 collimates (vertically) and focusses (horizontally) the UE48 beam onto the exit slit. The radiation is dispersed by a plane grating monochromator equipped with two blazed gratings (400 and 800 l/mm). A switching mirror unit M3 with two cylindrical mirrors deflects the beam to the SISSY-I endstation and SISSY-II open...


The EMIL x-ray beamline has two branches – UE48_EMIL - Soft x-ray EMIL Beamline (80 eV – 1800 eV) and CPMU17_EMIL - Hard x-ray EMIL Beamline (1800 eV – 10 keV) – that converge at the SISSY I endstation. The endstation features an angle-resolved photoelectron analyzer for PES/HAXPES and fluorescence detectors for XAS. A motorized 5-axis manipulator handle samples ranging from <1cm^2 to 6″ round and allows heating to ~1200°C as well as liquid N2...

Ultrafast processes in molecules visualized with femtosecond pump-probe photoelectron spectroscopy

Torsten Leitner
PhD thesis

Element-resolved Ultrafast Magnetization Dynamics in Ferromagnetic Alloys and Multilayers

Andrea Eschenlohr
PhD thesis

Interactions of Proteins with Soft Polymeric Surfaces: Driving Forces and Kinetics

Nicole Welsch
PhD thesis

Investigation of structural changes in cathode materials for rechargeable Li-ion batteries by X-ray Absorption Spectroscopy

Jatinkumar K. Rana
PhD thesis

Optoelectronic properties of impurity-modified CuGaS2 solar cell absorber films

Sascha Klemz
diploma thesis

Untersuchung der Ladungstrennung in Halbleiter-Nanopartikelschichten mit Methoden der Oberflächenphotospannung

Steffen Fengler
diploma thesis

Magnetism of 3d Frustrated Magnetic Insulators: α-CaCr2O4, β-CaCr2O4 and Sr2VO4

Sandor Toth
PhD thesis

Einfluss der undotierten ZnO-Schicht auf die elektrischen Eigenschaften von ZnO/Cu(In,Ga)Se2-Solarzellen

Lorena Messmann-Vera

A study of charge transfer kinetics in dye-sensitized surface conductivity solar cells

Dennis Friedrich

Benchmarking surface signals when growing GaP on Si in CVD ambients

Henning Döscher

3D Neutron Computed Laminography of Maize Plants

Nicole Rudolph-Mohr, Sarah Bereswill, Christian Tötzke, Nikolay Kardjilov & Sascha E. Oswald
Plant root systems induce biogeochemical patterns in the soil by respiration, water uptake and root exudation that can be measured with in-situ imaging techniques. Slab-shaped rhizoboxes represent the optimum design for 2D optical fluorescence imaging of pH and oxygen dynamics in the rhizosphere as well as measurement of soil water content by neutron radiography. However, quality of standard tomographic (3D) imaging of laterally extended samples suffers from insufficient neutron transmission over a significant angular range....


The off-synchrotron analysis chamber is equipped with a lab-based non-monochromatized twin anode (Mg, Al) x-ray and a gas-discharge UV source for photoemission experiments. A motorized 5-axis manipulator handle samples ranging from <1cm^2 to 6″ round and allows heating to ~1200°C as well as liquid N2 cooling. Multiple electrical contacts can be made to samples for operando measurements. The analysis chamber is attached to an extensive UHV “backbone” containing the SISSY I endstation and large-scale deposition...

U41-PEAXIS - PEAXIS - Combined RIXS and XPS

U41-PEAXIS beamline is one of the highest flux beamlines at BESSY II. It provides highly focused soft X-rays, thanks to the ellipsoidal refocusing mirror. The beamline is connected to a fixed endstation PEAXIS that is dedicated to studies of angle-resolved RIXS (Resonant Inelastic X-ray Scattering) and PES (PhotoElectron Spectroscopy) on solids.

V1 - Membrane Diffractometer

The design of the instrument is dedicated for biological samples or other samples with large unit cells (5-10 nm in cell length). The vertically focusing graphite monochromator provides adjustable wavelengths between 0.4 nm and 0.6 nm, making use of the full cross section of the neutron guide (3 cm wide, 12.5 cm high). A movable Be-filter at liquid nitrogen temperature may be used to suppress second order wavelengths below 0.39 nm. If less stringent collimation...

V16 - Very Small Angle Neutron Scattering (VSANS)

The second SANS instrument at BER II is dedicated to soft matter research. V16 covers a Q-range from 10-3 nm-1 to 8.5 nm-1. In standard time-of-flight mode an offset of the detector to the instrument axis to extend the Q range will be possible.

Focused Ion Beam tomography on fossilized osteocytes

Yara Haridy, Markus Osenberg, André Hilger, Ingo Manke, Donald Davesne & Florian Witzmann
Osteocytes play a central role in bone metabolism in extant vertebrates, but their evolutionary history is poorly understood. Therefore osteocyte lacunae microstructure of fossil bone was studied on the nanometer scale by means of focused ion beam tomography (FIB). A osteostracan and a “placoderm” were imaged, the earliest groups with cellular bone, and secondary osteons respectively. To visualize and characterize the early bone composition via the morphology and distribution of osteocyte lacunae, thereby imaging the...

Technical Design Study BESSSY VSR

A. Jankowiak, J. Knobloch, P. Goslawski & N. Neumann
technical report

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  • Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Str. 15, 12489 Berlin, Germany
  • Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, 14109 Berlin, Germany
  • Optics for Solar Energy, Helmholtz-Zentrum Berlin für Materialien und Energie, Albert-Einstein-Straße 16, 12489 Berlin
  • Computational Nano Optics, Zuse Institute Berlin, Takustraße 7, 14195 Berlin
  • Xavier University, Department of Physics, 3800 Victory Parkway, Cincinnati, OH 45207, USA
  • Dept. of Physics, Princeton University, Washington Road, Princeton, NJ 08544, USA
  • Berliner Hochschule für Technik, 13353 Berlin
  • Google Inc., Brandschenkestrasse 110, 8002 Zürich, Switzerland
  • Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Straße 38, 01187 Dresden, Germany
  • Institut de Systématique, Évolution, Biodiversité (UMR 7205), Muséum national d'Histoire naturelle, CNRS, Sorbonne Université, EPHE, 75005 Paris, France