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Content Provider | World Health Organization (WHO)-Global Index Medicus |
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Author | Shayduk, R. Gaal, P. Navirian, H. Leitenberger, W. Goldshteyn, J. Bargheer, M. |
Description | Country affiliation: Germany Author Affiliation: Navirian H ( Helmholtz-Zentrum Berlin fuÌ r Materialien und Energie GmbH, Wilhelm-Conrad-RoÌ ntgen Campus, BESSY II, Albert-Einstein-Str. 15, 12489 Berlin, Germany.) |
Abstract | We present a setup for ultrafast x-ray diffraction (UXRD) based at the storage ring BESSY II, in particular, a pump laser that excites the sample using 250 fs laser-pulses at repetition rates ranging from 208 kHz to 1.25 MHz. We discuss issues connected to the high heat-load and spatio-temporal alignment strategies in the context of a UXRD experiment at high repetition rates. The spatial overlap between laser pump and x-ray probe pulse is obtained with 10 µm precision and transient lattice changes can be recorded with an accuracy of δa/a(0) = 10(-6). We also compare time-resolved x-ray diffraction signals from a laser excited LSMO/STO superlattice with phonon dynamics simulations. From the analysis we determine the x-ray pulse duration to 120 ps in standard operation mode and below 10 ps in low- mode. |
ISSN | 00346748 |
Issue Number | 6 |
Journal | Review of Scientific Instruments |
Volume Number | 83 |
e-ISSN | 10897623 |
Language | English |
Publisher | American Institute of Physics |
Publisher Date | 2012-06-01 |
Publisher Place | United States |
Access Restriction | Subscribed |
Subject Keyword | Discipline Physics Discipline Chemistry |
Content Type | Text |
Resource Type | Article |
Subject | Instrumentation Medicine |
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