# PETRA III

 2018-09-0313:48 [PUBDB-2018-03341] Conference Presentation et al Retention of Particle Associated Radionuclides in Biota 2nd International Conference on Radioecological Concentration Processes, SevilleSeville, Spain, 6 Nov 2016 - 9 Nov 2016 2018-09-0311:42 [PUBDB-2018-03333] Contribution to a conference proceedings et al State-of-the-art tools for characterisation of particle exposure 4th International Conference on Radioecology and Environmental Radioactivity (ICRER), ICRER 2017, BerlinBerlin, Germany, 3 Sep 2017 - 8 Sep 2017 not applicable (2017) Methods for high-resolution non-invasive image analysis of the internal distribution of radionuclides s as well as toxic metals in intact animals or organs have been demonstrated. The retention of radioactive particles observed for environmental samples as well as in laboratory experiments calls for better exposure characterization in impact assessments of particle contaminated areas, in particular when the biota is of relevance for the human food pathway.. 2015-09-0311:30 [PUBDB-2015-03418] Journal Article et al Single Shot Polarization Characterization of XUV FEL Pulses from Crossed Polarized Undulators Scientific reports 5, 13531 (2015) [10.1038/srep13531]   Polarization control is a key feature of light generated by short-wavelength free-electron lasers.In this work, we report the first experimental characterization of the polarization properties of anextreme ultraviolet high gain free-electron laser operated with crossed polarized undulators. Weinvestigate the average degree of polarization and the shot-to-shot stability and we analyze aspectssuch as existing possibilities for controlling and switching the polarization state of the emitted light.The results are in agreement with predictions based on Gaussian beams propagation.. OpenAccess: PDF PDF (PDFA); 2015-08-2708:58 [PUBDB-2015-03292] Journal Article et al Static Magnetic Proximity Effect in $\mathrm{Pt/NiFe_2O_4}$ and Pt/Fe Bilayers Investigated by X-Ray Resonant Magnetic Reflectivity Physical review letters 115(9), 097401 (2015) [10.1103/PhysRevLett.115.097401]   The spin polarization of Pt in Pt/NiFe2O4 and Pt/Fe bilayers is studied by interface-sensitive x-ray resonant magnetic reflectivity to investigate static magnetic proximity effects. The asymmetry ratio of the reflectivity is measured at the Pt L3 absorption edge using circular polarized x-rays for opposite directions of the magnetization at room temperature. [...] OpenAccess: PDF PDF (PDFA);