A hard x-ray scanning microprobe for fluorescence imaging and microdiffraction at the Advanced Photon Source

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Description

A hard x-ray scanning microprobe based on zone plate optics and undulator radiation, in the energy region from 6 to 20 keV, has reached a focal spot size (FWHM) of 0.15 {micro}m (v) x 0.6 {micro}m (h), and a photon flux of 4 x 10{sup 9} photons/sec/0.01%BW. Using a slit 44 meters upstream to create a virtual source, a circular beam spot of 0.15 {micro}m in diameter can be obtained with a photon flux of one order of magnitude less. During fluorescence mapping of trace elements in a single human ovarian cell, the microprobe exhibited an imaging sensitivity for Pt ... continued below

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8 p.

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Cai, L.; Lai, B.; Yun, W.; Ilinski, P.; Legnini, D.; Maser, J. et al. November 2, 1999.

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Description

A hard x-ray scanning microprobe based on zone plate optics and undulator radiation, in the energy region from 6 to 20 keV, has reached a focal spot size (FWHM) of 0.15 {micro}m (v) x 0.6 {micro}m (h), and a photon flux of 4 x 10{sup 9} photons/sec/0.01%BW. Using a slit 44 meters upstream to create a virtual source, a circular beam spot of 0.15 {micro}m in diameter can be obtained with a photon flux of one order of magnitude less. During fluorescence mapping of trace elements in a single human ovarian cell, the microprobe exhibited an imaging sensitivity for Pt (L{sub a} line) of 80 attograms/{micro}m{sup 2} for a count rate of 10 counts per second. The x-ray microprobe has been used to map crystallographic strain and multiquantum well thickness in micro-optoelectronic devices produced with the selective area growth technique.

Physical Description

8 p.

Notes

INIS; OSTI as DE00750575

Medium: P; Size: 8 pages

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  • XRM '99, Berkeley, CA (US), 06/04/1999--06/05/1999

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  • Report No.: ANL/XFD/CP-100395
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 750575
  • Archival Resource Key: ark:/67531/metadc712056

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • November 2, 1999

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 11, 2017, 6:39 p.m.

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Cai, L.; Lai, B.; Yun, W.; Ilinski, P.; Legnini, D.; Maser, J. et al. A hard x-ray scanning microprobe for fluorescence imaging and microdiffraction at the Advanced Photon Source, article, November 2, 1999; Illinois. (digital.library.unt.edu/ark:/67531/metadc712056/: accessed April 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.