Publications Repository - Gdańsk University of Technology

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.

Authors

• Alexander Goikhman,
• Ivan Lyatun,
• Petr Ershov link open in new tab ,
• Irina Snigireva,
• dr inż. Paweł Wojda link open in new tab ,
• Vladimir Gorlevsky,
• Alexander Semenov,
• Maksim Sheverdyaev,
• Viktor Koletskiy,
• Anatoly Snigirev