نتایج جستجو برای: x ray scattering

تعداد نتایج: 758129  

2018
Chalinee Thanasupsombat Saowapak S Thongvigitmanee Sorapong Aootaphao Pairash Thajchayapong

The quality of images obtained from cone-beam computed tomography (CBCT) is important in diagnosis and treatment planning for dental and maxillofacial applications. However, X-ray scattering inside a human head is one of the main factors that cause a drop in image quality, especially in the CBCT system with a wide-angle cone-beam X-ray source and a large area detector. In this study, the X-ray ...

2012
Adeline Buffet André Rothkirch Ralph Döhrmann Volker Körstgens Mottakin M. Abul Kashem Jan Perlich Gerd Herzog Matthias Schwartzkopf Rainer Gehrke Peter Müller-Buschbaum Stephan V. Roth

The P03 beamline, also called the microfocus and nanofocus X-ray scattering (MiNaXS) beamline, exploits the excellent photon beam properties of the low-emittance source PETRA III to provide a microfocused/nanofocused beam with ultra-high intensity for time-resolved X-ray scattering experiments. The beamline has been designed to perform X-ray scattering in both transmission and reflection geomet...

2001
Makoto Kishimoto Laura E. Kay Todd W. Hurt Ross D. Cohen Julian H. Krolik

We present UV imaging polarimetry data of the Seyfert 2 galaxy Mrk 3 taken by the Hubble Space Telescope. The polarized flux is found to be extended to ∼ 1 kpc from the nucleus, and the position angles of polarization are centrosymmetric, confirming that the polarization is caused by scattering. We determine the location of the hidden nucleus as the center of this centrosymmetric pattern. From ...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2007

Journal: :Acta crystallographica. Section A, Foundations of crystallography 2013
Haiguang Liu Billy K Poon Dilano K Saldin John C H Spence Peter H Zwart

Femtosecond X-ray pulses from X-ray free-electron laser sources make it feasible to conduct room-temperature solution scattering experiments far below molecular rotational diffusion timescales. Owing to the ultra-short duration of each snapshot in these fluctuation scattering experiments, the particles are effectively frozen in space during the X-ray exposure. In contrast to standard small-angl...

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