Liquid-nitrogen-jet laser-plasma source for compact soft x-ray microscopy
2005 (English)In: Review of Scientific Instruments, ISSN 0034-6748, E-ISSN 1089-7623, Vol. 76, no 4, 043503- p.Article in journal (Refereed) Published
We describe a liquid-nitrogen-jet laser-plasma source with sufficient brightness, uniformity, stability, and reliability to be suitable for compact water-window soft x-ray transmission microscopy. A cooled capillary nozzle arrangement allows long-term operation and avoids previously reported jet instabilities. The source is quantitatively characterized by calibrated slit-grating spectroscopy and zone-plate imaging. The absolute photon number in the major spectral lines (lambda=2.48 nm and lambda=2.88 nm) is 1.0x10(12) photons/(pulsexsrxline). The source diameter is similar to 20 mu m (full width at half maximum) and the spatial stability is better than +/- 2 mu m. Within an area with uniformity of 20%, the average source brightness is 4x10(8) photons/(pulsexsrx mu m(2)xline), which allows operation of a compact soft x-ray transmission microscope with exposure times of a few minutes.
Place, publisher, year, edition, pages
2005. Vol. 76, no 4, 043503- p.
Liquid-nitrogen-jet laser-plasma sources; Slit-grating spectroscopy; Soft x-ray microscopy; Zone-plate imaging; Imaging techniques; Laser beams; Laser produced plasmas; Neodymium lasers; Photons; Plasma stability; Synchrotron radiation; X ray microscopes; Plasma sources
IdentifiersURN: urn:nbn:se:kth:diva-7015DOI: 10.1063/1.1884186ISI: 000228362200016ScopusID: 2-s2.0-17644395629OAI: oai:DiVA.org:kth-7015DiVA: diva2:11890
QC 201008202007-04-202007-04-202010-08-20Bibliographically approved