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MetalJet Souce for high resolution X-ray Diffraction, Scattering and Imaging

Thursday, September 27, 2018 @ 11:00 AM

Event Location:
FAMU-FSU College of Engineering | A115

High-end X-ray diffraction and scattering techniques such as small and macromolecular
molecule crystallography, SAXS, BioSAXS non-ambient SAXS rely heavily on the X-ray
source brightness for resolution and exposure time. As boundaries of technology are
pushed forward samples are becoming smaller, weaker diffracting and less stable which
puts an additional requirement on even brighter sources. With bright enough compact
sources, time resolved studies could be achieved even in the home laboratory.
Traditional solid or rotating anode X-ray tubes are typically limited in brightness by when
the e-beam power density melts the anode. The liquid-metal-jet technology has
overcome this limitation by using an anode that is already in the molten state thus ebeam
power loading above several megawatts per mm is now possible. We report
brightness of 6.5 x 1010 photons/(s·mm2·mrad2·line) over a spot size of 10 μm FWHM.
Over the last years, the liquid-metal-jet technology has developed from prototypes into
fully operational and stable X-ray tubes running in more than 80 labs over the world. Xray
crystallography and Small Angle X-ray Scattering (SAXS) have been identified as
key applications, since these applications benefit from small spot-sizes, high-brightness
in combination with a need for a stable output. These properties also help in achieving
high resolution phase contrast imaging and computed tomography. To achieve a singlecrystal-
diffraction (SCD) platform addressing the needs of the most demanding
crystallographers, the system manufacturer and multiple users have since installed the
MetalJet X-ray source into their SCD set-ups with successful results. With the high
brightness from the liquid-metal-jet X-ray source, in-situ SAXS studies can be performed
– even in the home laboratory.
This contribution reviews the evolution of the MetalJet technology specifically in terms of
stability, lifetime, flux and brightness and its applicability for pushing boundaries of highend
SCD and SAXS supported by recent user data. Recent possibilities to achieve cost
effective solutions attainable for a wider application range will also be presented.

A. Adibhatla
Anansuya Adibhatla graduated with a Masters in Chemical Engineering and a PhD in
Materials Science and Engineering. Her research was focused on amorphous ternary Ni
-based alloy membranes for hydrogen separation process and development of novel
polymeric membranes for fuel cells. She worked at Malvern Panalytical as an XRD
application specialist developing expertise in powder diffraction, non-ambient diffraction,
Pair distribution functions, SAXS and residual stress and texture analysis. At Malvern
Panalytical, she further conducted many customer demonstrations, user trainings and Xray
diffraction training schools. At Excillum, she manages the footprint of the company in
North America. She supports the customers and in the process to find new customers,
she presents new developments from Excillum’s source technology at various
conferences. She also interfaces with the OEMs in North America to build and maintain
industrial partnerships.

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