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Energy dispersive X-ray fluorescence (EDXRF) is a widely used non-destructive technique for micro and trace multi-element analysis of materials. Conventional trials show that using laboratory assisted EDXRF measurements, one can obtain…

Materials Science · Physics 2021-11-08 Md. Akhlak Alam , M. K. Tiwari , Ayushi Trivedi , Ajay Khooha , A. K. Singh

The research investigates coherent interactions between sub-GeV electrons and oriented scintillator crystals, leading to enhanced electromagnetic (EM) radiation. Experiments at Mainz Mikrotron (MAMI) involved PWO, BGO, and CsI crystals…

We herein estimate the effect of lattice defects on the line shape of electron paramagnetic resonance (EPR) signals from a single crystal of the S=10 single-molecule magnet Mn$_{12}$ with the external magnetic field along the crystal c…

Condensed Matter · Physics 2009-11-07 Kyungwha Park , N. S. Dalal , P. A. Rikvold

High-energy x-ray diffraction experiments peformed on rhombohedral (1-x)Pb(Zn1/3Nb2/3)O3-xPbTiO3(PZN-xPT) crystals with x= 4.5 and 8% show that an electric field applied along the [001] direction induces the tetragonal phase, as proposed by…

Materials Science · Physics 2009-11-07 B. Noheda , Z. Zhong , D. E. Cox , G. Shirane , S-E. Park , P. Rehring

High energy x-ray diffraction measurements on Pb(Zn$_{1/3}$Nb$_{2/3}$)O$_3$ (PZN) single crystals show that the system does not have a rhombohedral symmetry at room temperature as previously believed. The new phase (X) in the bulk of the…

Strongly Correlated Electrons · Physics 2009-11-07 Guangyong Xu , Z. Zhong , Y. Bing , Z. -G. Ye , C. Stock , G. Shirane

We devised and built a versatile facility for the calibration of the next generation X-ray polarimeters with unpolarized and polarized radiation. The former is produced at 5.9 keV by means of a Fe55 radioactive source or by X-ray tubes,…

We devised and built a light, compact and transportable X-ray polarized source based on the Bragg diffraction at nearly 45 degrees. The source is composed by a crystal coupled to a small power X-ray tube. The angles of incidence are…

Nanoscale strain mapping by four-dimensional scanning transmission electron microscopy (4D-STEM) relies on determining the precise locations of Bragg-scattered electrons in a sequence of diffraction patterns, a task which is complicated by…

This paper reports on a comprehensive study of an ultra-relativistic positron beam deflection by an oriented quasi-mosaic crystal. The analysis was carried out for the positron energy of 530 MeV incident on the quasi-mosaic bent Si(111)…

An array of compound refractive X-ray lenses (CRL) with 20x20 lenslets, a focal distance of 20 cm and a visibility of 0.93 is presented. It can be used as a Shack-Hartmann sensor for hard X-rays (SHARX) for wavefront sensing and permits for…

230 MeV proton beam out of a cyclotron was delivered into a Zebra multi layered IC detector (IBA) calibrated in terms of penetration range in water. The analysis of the measured Bragg peak determines penetration range in water which can be…

Medical Physics · Physics 2017-07-27 Vladimir Anferov , Vladimir Derenchuck , Ron Moore , Andreas Schreuder

A stack of titanium foils was irradiated with 136 MeV 136Xe to study microstructure damage and phase stability of titanium upon irradiation. X- ray diffraction, scanning electron microscopy/energy dispersive spectroscopy and atomic force…

Nuclear Experiment · Physics 2015-06-12 S. Sadi , A. Paulenova , W. Loveland , P. R. Watson , J. P. Greene , S. Zhu , G. Zinkann

X-ray back diffraction from monolithic two silicon crystal plates of 25--150 um thick and a 40--150 um gap using synchrotron radiation of energy resolution deltaE=0.36 meV at 14.4388 keV shows clearly resonance fringes inside the energy gap…

Other Condensed Matter · Physics 2009-11-10 S. -L. Chang , Yu. P. Stetsko , M. -T. Tang , Y. -R. Lee , W. -H. Sun , M. Yabashi , T. Ishikawa

Determining crystal structures from experimental powder X-ray diffraction data remains challenging because peak overlap, preferred orientation, and impurity phases obscure atomic arrangements. We present RealPXRD-Solver, a generative model…

Mechanical tuning of a 3D-printed, polymer-based one-dimensional photonic crystal was demonstrated in the terahertz spectral range. The investigated photonic crystal consists of 13 alternating compact and low-density layers and was…

Applied Physics · Physics 2021-02-03 Serang Park , Brandon Norton , Glenn D. Boreman , Tino Hofmann

A growing number of shock compression experiments, especially those involving laser compression, are taking advantage of in situ x-ray diffraction as a tool to interrogate structure and microstructure evolution. Although these experiments…

We outline the many physics opportunities offered by a multi-purpose fixed-target experiment using the LHC proton and Pb beams extracted by a bent crystal. In a proton run with the LHC 7-TeV beam, one can analyze pp, pd and pA collisions at…

High Energy Physics - Phenomenology · Physics 2015-06-04 S. J. Brodsky , F. Fleuret , C. Hadjidakis , J. P. Lansberg

Molecular and polymeric crystals show a wide range of functional properties that arise from the interplay between the atomic-scale structure of their constituent molecules and the organization of these molecules within the crystal lattice…

Dichroic filters are used by instrument designers to split a field of view into different optical paths for simultaneous measurement of different spectral bands. Quantifying the polarization aberrations of a dichroic is relevant for…

Instrumentation and Methods for Astrophysics · Physics 2020-12-24 James Heath , Meredith Kupinski , Ewan Douglas , Kira Hart , James Breckinridge

A possibility of a few MeV electron beam diagnostics (Lorentz factor ~ 10) using polarization characteristics of the optical transition radiation (OTR) have been considered. Determinaton of the electron beam divergence have been performed…

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