Results 121 to 130 of about 1,236 (164)

An electron Talbot-Lau interferometer and magnetic field sensing

Applied Physics Letters, 2013
We present a demonstration of a three grating Talbot-Lau interferometer for electrons. As a proof of principle, the interferometer is used to measure magnetic fields. The device is similar to the classical Moiré deflectometer. The possibility to extend this work to build a scaled-up electron deflectometer or interferometer for sensitive magnetic field ...
Roger Bach, Glen Gronniger, Herman Batelaan   +2 more
openaire   +1 more source

Progress toward a large-scale ion Talbot-Lau interferometer

Physical Review A, 2017
The Talbot-Lau interferometer is a proven tool to perform measurements in the near-field regime. It has been extensively used for investigating the wave nature of electrons, atoms, and complex organic molecules. However, when designing devices with high geometrical acceptances, which would be desirable when dealing with low-intensity sources of ...
Demetrio, Andrea, Müller, Simon R., Lansonneur, Pierre, Oberthaler, Markus K.   +3 more
openaire   +3 more sources

Spectrum optimization of a Talbot-Lau interferometer towards clinical application

SPIE Proceedings, 2012
X-ray phase-contrast imaging (XPCI) using a Talbot-Lau interferometer is a promising modality to increase soft-tissue contrast in medical imaging and has drawn the attention of many groups worldwide. Nevertheless, due to the many free parameters to be optimized in a XPCI setup, there's a long way to go to find the optimal geometry, design energy and
Thomas Weber, Florian Bayer, Karl Gödel, Wilhelm Haas, Georg Pelzer, Jens Rieger, André Ritter, Lukas Wucherer, Jürgen Durst, Thilo Michel, Gisela Anton   +10 more
openaire   +1 more source

Spectroscopic dark-field imaging using a grating-based Talbot-Lau interferometer

SPIE Proceedings, 2012
In recent years X-ray phase-contrast imaging became applicable in the hard X-ray regime through the use of a grating-based Talbot-Lau interferometer and was demonstrated to be a promising technique to gain contrast in different fields of medical imaging.
Florian Bayer, Karl Gödel, Wilhelm Haas, Jens Rieger, André Ritter, Thomas Weber, Lukas Wucherer, Jürgen Durst, Thilo Michel, Gisela Anton   +9 more
openaire   +1 more source

Model-driven phase retrieval network for single-shot x-ray Talbot–Lau interferometer imaging

Optics Letters, 2020
The single-shot x-ray Talbot–Lau interferometer-based differential phase contrast (DPC) imaging is able to accelerate time-consuming data acquisition; however, the extracted phase image suffers from severe image artifacts. Here, we propose to estimate the DPC image via a deep convolutional neural network (CNN) incorporated with the physical imaging ...
Peizhen Liu, Jiecheng Yang, Jianwei Chen, Ting Su, Jinchuan Guo, Hairong Zheng, Dong Liang, Yongshuai Ge   +7 more
openaire   +2 more sources

Dual energy phase contrast x-ray imaging with Talbot-Lau interferometer

Journal of Applied Physics, 2010
In weakly absorbing materials such as polymers and soft tissue, x-ray phase sensitive imaging methods can provide substantially enhanced contrast compared to classical, absorption based radiography. For specific applications, the latter can be applied in a dual energy scheme that helps to identify, discriminate and/or quantify materials. In this paper,
Christian Kottler, Vincent Revol, Rolf Kaufmann, Claus Urban   +3 more
openaire   +1 more source

Sensitivity of x-ray phase tomography based on Talbot and Talbot-Lau interferometer

SPIE Proceedings, 2008
The sensitivity of X-ray phase tomography based on Talbot(-Lau) interferometry is discussed. A criterion is described to evaluate the superiority of the technique in comparison to the conventional absorption-contrast method. An experimental result of X-ray phase tomography with a Talbot interferometer is compared with the criterion.
Atsushi Momose, Wataru Yashiro, Yoshihiro Takeda, Norihide Maikusa   +3 more
openaire   +1 more source

X-ray phase contrast imaging by compact Talbot–Lau interferometer with a single transmission grating

Optics Letters, 2014
We performed x-ray phase contrast imaging (XPCI) by Talbot-Lau interferometer using only a single transmission grating. Multiline metal targets embedded in a diamond substrate were irradiated with electrons to generate an array of x-ray lines of 1 μm width, which allowed XPCI within a 1 m source-detector distance in a configuration without a source or ...
Naoki, Morimoto, Sho, Fujino, Ken-Ichi, Ohshima, Jimpei, Harada, Takuji, Hosoi, Heiji, Watanabe, Takayoshi, Shimura   +6 more
openaire   +2 more sources

Experiments with a pulsed Talbot Lau matter-wave interferometer

2017
Das quantenmechanische Superpositionsprinzip postuliert, daß massive Teilchen delokalisiert sein können und sich als Materiewellen im Raum ausbreiten. Dieses Verhalten konnte bisher z.B. Photonen, Neutronen, Atomen und vielen Molekülen nachgewiesen werden, und dennoch ist es bis heute ungeklärt, ob Teilchen beliebiger Masse in solche ...
openaire   +1 more source

X-ray phase scanning setup for non-destructive testing using Talbot-Lau interferometer

SPIE Proceedings, 2016
X-ray grating interferometry has a great potential for X-ray phase imaging over conventional X-ray absorption imaging which does not provide significant contrast for weakly absorbing objects and soft biological tissues. X-ray Talbot and Talbot-Lau interferometers which are composed of transmission gratings and measure the differential X-ray phase ...
S. Bachche, M. Nonoguchi, K. Kato, M. Kageyama, T. Koike, M. Kuribayashi, A. Momose   +6 more
openaire   +1 more source