Repozytorium publikacji - Politechnika Gdańska

The speckle suppressor device containing highly porous nanoberyllium is proposed for manipulating with the spatial coherence length and removing undesirable speckle structure during the imaging experiments. We report a special device called the speckle suppressor, which contains the highly porous nanoberyllium plate, compacted from both sides by two beryllium windows. By insertion the speckle suppressor in the X-ray beam it allows to manipulate with the spatial coherence length, changing the effective source size and to remove undesirable speckle structure in the X-ray imaging experiments walmost without a beam attenuation. The absorption of the nanoberyllium plate is below 1% for 1 mm thickness at 12 keV. The speckle suppressor was tested at the ID06 ESRF beamline with X-rays in the energy range from 9 to 15 keV. It was applied for the transformation of the phase-amplitude contrast to pure amplitude one in the scheme of full-field microscopy. The device was also used to eliminate holographic fringes of the phase object like a boron fibre.

Autorzy

• Alexander Goikhman,
• Ivan Lyatun,
• Petr Ershov link otwiera się w nowej karcie ,
• Irina Snigireva,
• dr inż. Paweł Wojda link otwiera się w nowej karcie ,
• Vladimir Gorlevsky,
• Alexander Semenov,
• Maksim Sheverdyaev,
• Viktor Koletskiy,
• Anatoly Snigirev