Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volume 268, Issue 10, Pages 1692-1700Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nimb.2010.02.002
Keywords
Soft X-rays; Soft X-ray sources; Water window sources; Gas puff target; Laser applications; Laser-produced plasma
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Funding
- Ministry of Science and Higher Education of Poland [120/EUR/2007/02]
- COST Action [MP0601]
- Foundation for Polish Science [H0M2009/14]
- European Economic Area (EEA)
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We have developed compact, high repetition, table-top soft-X-ray sources, based on a gas puff target, emitting in water window spectral range at lambda = 2.88 nm from nitrogen gas target or, in 2-4 nm range of wavelengths, from argon gas target. Double stream gas puff target was pumped optically by commercial Nd:YAG laser, energy 0.74 J, pulse time duration 4 ns. Spatial distribution of laser-produced plasma was imaged using a pinhole camera. Using transmission grating spectrometer, argon and nitrogen emission spectra were obtained, showing strong emission in the water window spectral range. Using AXUV100 detector the flux measurements of the soft-X-ray pulses were carried out and are presented. These debris free sources are table-top alternative for free electron lasers and synchrotron installations. They can be successfully employed in microscopy, spectroscopy and metrology experiments among others. (C) 2010 Elsevier B.V. All rights reserved.
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