Which of them offer the best brightness for imaging and scattering applications? Is there an accepted measure of power density, e.g. W/um^2?
Hamamatsu is one I know...
Hi Alexander,
Concerning some microbeam sources (they are not exactly X-ray 'tubes') I heard some times ago about the metal jet microfocus X-ray sources (developped by Bruker, I think). You can goole 'metal jet microfocus X-ray sources' or 'liquid jet x-ray source'.
see also for example:
http://www.excillum.com/products/metaljet-x-ray-sources.html
https://www.bruker.com/fileadmin/user_upload/8-PDF-Docs/X-rayDiffraction_ElementalAnalysis/SC-XRD/ProductSheets/Product_Sheet_49_METALJET_Liquid_Metal_Jet_X-ray_Source_for_Structural_Biology_DOC-S86_EXS049_en_High.pdf
You can also find some information at XENOX, they (can) produce some focussing/ collimation devices (see e.g. http://www.xenocs.com/applications/microdiffraction.html)
Best regards, Cristian
Kevex (Thermo Scientific) and Varian are two standard suppliers of point-projection x-ray tubes. As to "brightest", that is a difficult question to answer because you don't mention the requirements on wavelength, monochromaticity, source size, etc. Usually, short of a liquid metal jet source (which is very limited as to materials and therefore output wavelengths), a rotating anode will put out the most photons, but probably not from a very small source, so it depends again on what you require.
There are also conventional micro-focus sources available (e.g. not liquid jet). Yxlon are one supplier (they took over Feinfocus's microfocus tube business): http://www.yxlon.com/Technology/Microfocus-X-ray-tubes
Phoenix are another - they make tubes in which the final window doubles as the electron target giving a very wide angle beam.
http://www.phoenix-xray.com/en/company/technology/principles_of_operation/principle_025.html
Both these suppliers (and also Excillium) tend to be used in imaging applications. Yxlon and Phoenix make their own micro-CT systems based around their tubes.
Check out this exhaustive discussion on LinkedIn regarding the micro-focus X-ray tubes:
http://www.linkedin.com/groupItem?view=&gid=3614857&type=member&item=153476690&qid=8ce98149-68ec-4c98-8ce9-15db48e4bb21&trk=group_items_see_more-0-b-ttl
- Badges
- Science method
- Similar topics
- Methodology
- Crystallography
- X-ray Diffraction