Compact X-ray microscope for the water window based on a high brightness laser plasma source
2012 (English)In: Optics Express, ISSN 1094-4087, Vol. 20, no 16, 18362-18369 p.Article in journal (Refereed) Published
We present a laser plasma based x-ray microscope for the water window employing a high-average power laser system for plasma generation. At 90 W laser power a brightness of 7.4 x 10(11) photons/(s x sr x mu m(2)) was measured for the nitrogen Ly alpha line emission at 2.478 nm. Using a multilayer condenser mirror with 0.3 % reflectivity 10(6) photons/(mu m(2) x s) were obtained in the object plane. Microscopy performed at a laser power of 60 W resolves 40 nm lines with an exposure time of 60 s. The exposure time can be further reduced to 20 s by the use of new multilayer condenser optics and operating the laser at its full power of 130 W.
Place, publisher, year, edition, pages
2012. Vol. 20, no 16, 18362-18369 p.
Other Physics Topics
IdentifiersURN: urn:nbn:se:kth:diva-101568DOI: 10.1364/OE.20.018362ISI: 000307356300107ScopusID: 2-s2.0-84864590889OAI: oai:DiVA.org:kth-101568DiVA: diva2:548568
QC 201208312012-08-312012-08-302013-01-09Bibliographically approved