Results 11 to 20 of about 89,505 (296)

Band-edge-induced Bragg diffraction in two-dimensional photonic crystals [PDF]

Optics Letters, 2006
Two-dimensional photonic crystals composed of two orthogonal volume diffraction gratings have been photogenerated in photopolymers. When the read beam is set at the Bragg angle, the diffraction efficiency of the transmission grating is strongly enhanced ...
Chevallier, Raymond, Frey, Robert, He, Qiong, Maruani, Alain, Massenot, Sébastien, Zaquine, Isabelle   +5 more
core   +7 more sources

Wireless, Portable Fiber Bragg Grating Interrogation System Employing Optical Edge Filter [PDF]

Sensors, 2019
A small-size, high-precision fiber Bragg grating interrogator was developed for continuous plethysmograph monitoring. The interrogator employs optical edge filters, which were integrated with a broad-band light source and photodetector to demodulate the ...
Ken Ogawa, Shouhei Koyama, Yuuki Haseda, Keiichi Fujita, Hiroaki Ishizawa, Keisaku Fujimoto   +5 more
doaj   +3 more sources

Tem-per-ature dependence in Bragg edge neutron transmission measurements. [PDF]

J Appl Crystallogr, 2022
A systematic study has been carried out to investigate the neutron transmission signal as a function of sample temperature. In particular, the experimentally determined wavelength-dependent neutron attenuation spectra for a martensitic steel at temperatures ranging from 21 to 700°C are compared with simulated data.
Al-Falahat AM, Kardjilov N, Woracek R, Boin M, Markötter H, Kuhn LT, Makowska M, Strobl M, Pfretzschner B, Banhart J, Manke I.   +10 more
europepmc   +8 more sources

Frame overlap Bragg edge imaging. [PDF]

Sci Rep, 2020
AbstractNeutron Bragg edge imaging enables spatially resolved studies of crystalline features through the exploitation and analysis of Bragg edges in the transmission spectra recorded in each pixel of an imaging detector. Studies with high spectral resolutions, as is required e.g.
Busi M, Čapek J, Polatidis E, Hovind J, Boillat P, Tremsin AS, Kockelmann W, Strobl M.   +7 more
europepmc   +4 more sources

Magnetic Bragg dip and Bragg edge in neutron transmission spectra of typical spin superstructures. [PDF]

Sci Rep, 2017
AbstractNeutron diffractometry has been a critical tool for clarifying spin structures. In contrast, little attention has been paid to neutron transmission spectroscopy, even though they are different types of the same phenomenon. Soon, it will be possible to measure the wavelength dependence of transmissions easily using accelerator-driven neutron ...
Mamiya H, Oba Y, Terada N, Watanabe N, Hiroi K, Shinohara T, Oikawa K.   +6 more
europepmc   +4 more sources

Discrete Electronic Subbands due to Bragg Scattering at Molecular Edges [PDF]

Physical Review Letters, 2019
The discretization of the electronic structure of nanometer-size solid systems due to quantum confinement and the concomitant modification of their physical properties is one of the cornerstones for the development of nanoscience and nanotechnology.
Martín-Jiménez A., Gallego J.M., Miranda, Rodolfo, Otero, Roberto   +3 more
openaire   +5 more sources

Update of Bragg edge analysis software “GUI-RITS”

Journal of Physics: Conference Series, 2023
Abstract The energy-resolved neutron imaging system, RADEN at J-PARC, has been providing to users a Rietveld-type analysis code, RITS, for pulsed neutron Bragg-edge transmission (BET) imaging with a graphical user interface (GUI) version, for fitting spectral data obtained with this instrument.
K Oikawa, H Sato, K Watanabe, Y H Su, T Shinohara, T Kai, Y Kiyanagi, H Hasemi   +7 more
openaire   +1 more source

Characterization of Crystallographic Structures Using Bragg-Edge Neutron Imaging at the Spallation Neutron Source

Journal of Imaging, 2017
Over the past decade, wavelength-dependent neutron radiography, also known as Bragg-edge imaging, has been employed as a non-destructive bulk characterization method due to its sensitivity to coherent elastic neutron scattering that is associated with ...
Gian Song, Jiao Y. Y. Lin, Jean C. Bilheux, Qingge Xie, Louis J. Santodonato, Jamie J. Molaison, Harley D. Skorpenske, Antonio M. Dos Santos, Chris A. Tulk, Ke An, Alexandru D. Stoica, Michael M. Kirka, Ryan R. Dehoff, Anton S. Tremsin, Jeffrey Bunn, Lindsay M. Sochalski-Kolbus, Hassina Z. Bilheux   +16 more
doaj   +1 more source

Neutron Bragg edge tomography characterisation of residual strain in a laser-welded Eurofer97 joint

Nuclear Materials and Energy, 2023
Nuclear fusion is a potential source of electricity which can address the environmental problems posed by fossil fuels. Eurofer97 steel is a primary structural material for breeding blanket and divertor components in fusion Tokamaks.
Bin Zhu, Nathanael Leung, Winfried Kockelmann, Michael Gorley, Mark J. Whiting, Yiqiang Wang, Tan Sui   +6 more
doaj   +1 more source

Mapping of axial plastic zone for roller bearing overloads using neutron transmission imaging

Materials & Design, 2018
Premature failure of wind turbine gearbox bearings is an ongoing concern for industry, with sudden overload events potentially contributing towards raceway damage, significantly hindering performance.
A. Reid, I. Martinez, M. Marshall, T. Minniti, S. Kabra, W. Kockelmann, T. Connolley, M. Mostafavi   +7 more
doaj   +1 more source