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An x-ray free electron laser oscillator (XFELO) has been recently proposed [K. Kim, Y. Shvyd'ko, and S. Reiche, Phys. Rev. Lett. 100, 244802 (2008)]. Angular orientation and position in space of Bragg mirrors of the XFELO optical cavity…

Instrumentation and Detectors · Physics 2015-05-18 Stanislav Stoupin , Frank Lenkszus , Robert Laird , Kurt Goetze , Kwang-Je Kim , Yuri Shvyd'ko

The use of a low profile, light weight and easy to fabricate transpolarising surface placed on one side of a trihedral corner reflector (TCR) as polarimetric calibrator is presented in this letter. The transpolarising-TCR (TTCR) presents a…

Instrumentation and Detectors · Physics 2015-05-27 Pere J. Ferrer , Carlos Lopez-Martinez , Albert Aguasca , Luca Pipia , Jose M. Gonzalez-Arbesu , Xavier Fabregas , Jordi Romeu

The usage of a Crystalline Undulator (CU) has been identified as a promising solution for generating powerful and monochromatic $\gamma$-rays. A CU was fabricated at SSL through the grooving method, i.e., by the manufacturing of a series of…

We create a passive wave splitter, created purely by geometry, to engineer three-way beam splitting in electromagnetism in transverse electric polarisation. We do so by considering arrangements of Indium Phosphide dielectric pillars in air,…

Optics · Physics 2019-06-26 Mehul P. Makwana , Richard Craster , Sebastien Guenneau

Magnetic x-ray diffraction combined with x-ray focusing optics is used to image individual antiferromagnetic spin density wave domains in a chromium single crystal at the micron scale. The cross section for non-resonant magnetic x-ray…

Other Condensed Matter · Physics 2007-06-01 Paul G. Evans , Eric D. Isaacs , Gabriel Aeppli , Zhonghou Cai , Barry Lai

Vibrated monolayers of granular particles confined into horizontal cavities form a variety of fluid patterns with orientational order that resemble equilibrium liquid-crystal phases. In some cases one can identify nematic and smectic…

Soft Condensed Matter · Physics 2023-12-12 Yuri Martinez-Raton , Enrique Velasco

It is shown that multiple volume reflections from different planes of one bent crystal becomes possible when particles move at a small angle with respect to a crystal axis. Such a Multiple Volume Reflection makes it possible to increase the…

Accelerator Physics · Physics 2008-11-26 Victor Tikhomirov

We designed and built a new astronomical photo-polarimeter that can measure linear polarization simultaneously in three spectral bands. It has a Calcite beamdisplacement prism as the analyzer. The ordinary and extra-ordinary emerging beams…

Instrumentation and Methods for Astrophysics · Physics 2015-05-19 G. Srinivasulu , A. V. Raveendran , S. Muneer , M. V. Mekkaden , N. Jayavel , M. R. Somashekar , K. Sagayanathan , S. Ramamoorthy , M. J. Rosario , K. Jayakumar

By using a zone-casting derivative method it is possible to create well-aligned 200 nm thin films of tetracyano platinate crystal wires, which cover more than 50% of the surface of the substrate. The aligned crystal wires deviate only…

Materials Science · Physics 2018-06-26 Christian Rein , Jens W. Andreasen , Martin M. Nielsen , Morten Christensen

The radiation emission spectra of polarized photons emitted from charge particle in single crystal are obtained in semiclassical theory in Baer-Katkov-Strakhovenko approximation for planar crystal orientation. The range of applicability of…

High Energy Physics - Phenomenology · Physics 2009-10-31 S. M. Darbinian , N. L. Ter-Isaakian

We report on the Raman and photoluminescence characterization of three-dimensional microstructures created in single crystal diamond with a Focused Ion Beam (FIB) assisted lift-off technique. The method is based on MeV ion implantation to…

We propose a new design for a multi-color, parallelized STED microscope, capable of multiple beam scanning. Our design is based on a common programmable diffracting optical element used to split, shape, and align both the excitation beams…

Optics · Physics 2015-04-21 Omer Wagner , Ori Cheshnovsky , Yael Roichman

Ideas of use the particle channeling in bent crystals for steer the beams have been checked up and advanced in many experiments. However, until now, this method of beam formation has limitations in application, since the channeling process…

Accelerator Physics · Physics 2020-03-30 A. G. Afonin , M. Yu. Chesnokov , Yu. A. Chesnokov , A. A. Yanovich

We propose a method to perform a configuration determination for chiral and/or polar crystals by utilizing anisotropy of NMR shift. The chirality (handedness) or polarity of a crystal, that is characterized by its sign, can be extracted…

Materials Science · Physics 2023-11-14 Hiroaki Kusunose , Jun Kikuchi

Mono-layers of stearic and behenic acids deposited with the Langmuir-Blodgett technique, were used as aligning films in nematic liquid crystal cells. During the filling process the liquid crystal adopts a deformed quasi-planar alignment…

Soft Condensed Matter · Physics 2008-02-03 V. S. U. Fazio , L. Komitov , S. T. Lagerwall

We simulate the focusing of a partially-coherent X-ray beam emitted by an undulator in a fourth-generation storage ring performing coherent mode decomposition and wave optics propagation. The focus position is shifted, and its size is…

The LCLS beam is meant for a single user, but the baseline undulator is long enough to serve two users simultaneously. To this end, we propose a setup composed of two elements: an X-ray mirrors pair for X-ray beam deflection, and a 4 m-long…

Accelerator Physics · Physics 2015-03-17 Gianluca Geloni , Vitali Kocharyan , Evgeni Saldin

The outstanding design feature of an XPS microprobe Quantum 2000 is the double focussing ellipsoidally shaped quartz monochromator of the X-ray source. This device monochromatizes the Alk{\alpha} radiation and refocuses the X-rays from the…

Instrumentation and Detectors · Physics 2014-04-23 U. Scheithauer

Metasurfaces and photonic crystals have revolutionized classical and quantum manipulation of light, and opened the door to studying various optical singularities related to phases and polarization states. However, traditional nanophotonic…

While performing molecular dynamics simulations of a simple monatomic liquid, we observed the crystallization of a material displaying octagonal symmetry in its simulated diffraction pattern. Inspection of the atomic arrangements in the…

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