Inhalt des Dokuments
Laser-produced plasma source
- The BLiX-LPP source has two flexible beamlines, in this example two XAS experiments are performed simultaneously; the laser system is situated in a clean room environment
- © AG Kanngießer
The laser-produced plasma (LPP) source was developed together with the Max-Born-Institute (MBI) , Berlin, and the company Bestec GmbH .
The used laser is a high average power commercial Yb:YAG – thin disk laser system (TRUMPF Laser Technology) which is modified with a variable pulse length seed-diode (0.5 ns – 30 ns) in order to obtain optimal pulse parameters. In normal operation mode the system delivers 1 ns laser pulses with 100 Hz repetition rate, up to 250 mJ single pulse energy and an M² < 1.2. In the plasma interaction chamber the laser pulses are focused onto a rotating and translating metal cylinder, forming a small hot dense plasma, which emits the desired soft X-rays. The target material can be exchanged with Cu and W the standard materials for line emission or quasi-continuous spectra, respectively. A real-time feedback system ensures source position stability, while the laser and the emission intensity are monitored during measurements. Two beamlines offer the possibility of two simultaneous experiments.
Contact: Ioanna Mantouvalou , Adrian Jonas 
I. Mantouvalou, R. Jung, J. Tuemmler, H. Legall, T. Bidu, H. Stiel, W. Malzer, B. Kanngießer, and W. Sandner, Review of Scientific Instruments 82, 066103 (2011)
I. Mantouvalou, K. Witte, D. Grötzsch, M. Neitzel, S. Günther, J. Baumann, R. Jung, H. Stiel, B. Kanngießer, and W. Sandner, Review of Scientific Instruments 86, 035116 (2015)