Scanning soft X-ray microscopy on the U15 beam line
Abstract
Soft X-rays are well suited to the imaging of biological materials. The instrumentation for scanning microscopy has been developed and applied the apparatus to the study of a variety of specimens. The basic optical element in the microscope is a Fresnel zoneplate, fabricated for us at IBM using electron beam lithography techniques. This zoneplate is used to focus the X-ray beam to a 0.2 micrometer spot. The specimen is mechanically scanned past this spot, while the X-rays transmitted through it are detected by a flow proportional counter. The output from the counter is used to form the image, a map of the specimen absorptivity.
- Publication:
-
In Brookhaven National Lab. Activity of the National Synchrotron Light Source (NSLS) p 186-188 (SEE N86-22326 12-73
- Pub Date:
- 1985
- Bibcode:
- 1985nsls.rept..186J
- Keywords:
-
- Bioassay;
- Microscopy;
- Scanners;
- Synchrotron Radiation;
- X Ray Imagery;
- Absorptivity;
- Electron Beams;
- Fabrication;
- Fresnel Lenses;
- Lithography;
- Mapping;
- Proportional Counters;
- Nuclear and High-Energy Physics