# FS-LA

 2017-11-1413:20 [PUBDB-2017-11964] Poster et al Time resolved measurement of fluorescence kinetics from Adenine excited by soft X-rays Workshop on Science of “From Matter to Materials and Life”, Meeting locationHamburg, Germany, 14 Dec 2016 - 16 Dec 2016 2017-11-1318:29 [PUBDB-2017-11924] Poster et al Ultrafast fragmentation dynamics of Phenanthrene andPyrene after photoionization at 30.3 nm wavelength DESY Users Meeting 2017, Meeting locationHamburg, Germany, 25 Jan 2017 - 27 Jan 2017 2017-11-1318:06 [PUBDB-2017-11919] Journal Article et al Micro-Focusing of Broadband High-Order Harmonic Radiation by a Double Toroidal Mirror Applied Sciences 7(11), 1159 (2017) [10.3390/app7111159]   We present an optical system based on two toroidal mirrors in a Wolter configuration to focus broadband extreme ultraviolet (XUV) radiation. Optimization of the focusing optics alignment is carried out with the aid of an XUV wavefront sensor [...] OpenAccess: PDF PDF (PDFA); 2017-11-1314:53 [PUBDB-2017-11901] Contribution to a conference proceedings/Contribution to a book et al Status of the Seeding Development at sFLASH Proceedings of FEL2017, Santa Fe, NM, USA38th international free electron laser conference, Meeting locationSanta Fe, NM USA, USA, 20 Aug 2017 - 25 Aug 2017 100-103 (2017) sFLASH is the experimental free-electron laser (FEL) setup producing seeded radiation installed at FLASH. Since 2015 it has been operated in the high-gain harmonic generation(HGHG) mode [...] 2017-11-0910:46 [PUBDB-2017-11808] Journal Article et al Coulomb-explosion imaging of concurrent CH$_{2}$BrI photodissociation dynamics Physical review / A 96(4), 043415 (2017) [10.1103/PhysRevA.96.043415]   The dynamics following laser-induced molecular photodissociation of gas-phase CH$_{2}$BrI at 271.6 nm were investigated by time-resolved Coulomb-explosion imaging using intense near-IR femtosecond laser pulses. The observed delay-dependent photofragment momenta reveal that CH$_{2}$BrI undergoes C-I cleavage, depositing 65.6% of the available energy into internal product states, and that absorption of a second UV photon breaks the C-Br bond ofCH$_{2}$Br. [...] OpenAccess: PDF PDF (PDFA); External link: Fulltext 2017-09-1316:13 [PUBDB-2017-10736] Contribution to a conference proceedings/Contribution to a book et al Concept for a Seeded FEL at FLASH2 8th Intl. Particle Accelerator Conference, IPAC2017, Meeting locationCopenhagen, Denmark, 14 May 2017 - 19 May 2017 Geneva : JACoW, 2607-2610 (2017) [10.18429/JACoW-IPAC2017-WEPAB019]   The free-electron laser (FEL) FLASH is a user facility delivering photon pulses down to 4 nm wavelength. Recently, the second FEL undulator beamline FLASH2 was added to the facility. [...] OpenAccess: PDF PDF (PDFA); 2017-08-0915:15 [PUBDB-2017-09033] Journal Article et al Single-shot Monitoring of Ultrafast Processes via X-ray Streaking at a Free Electron Laser Scientific reports 7(1), 7253 (2017) [10.1038/s41598-017-07069-z]   The advent of x-ray free electron lasers has extended the unique capabilities of resonant x-ray spectroscopy techniques to ultrafast time scales. Here, we report on a novel experimental method that allows retrieving with a single x-ray pulse the time evolution of an ultrafast process, not only at a few discrete time delays, but continuously over an extended time window [...] OpenAccess: PDF PDF (PDFA); 2017-07-1316:21 [PUBDB-2017-07579] Preprint/Report et al Alignment, Orientation, and Coulomb Explosion of Difluoroiodobenzene Studied with the Pixel Imaging Mass Spectrometry (PImMS) Camera [arXiv:1706.08376] Laser-induced adiabatic alignment and mixed-field orientation of 2,6-difluoroiodobenzene (C$_6$H$_3$F$_2$I) molecules are probed by Coulomb explosion imaging following either near-infrared strong-field ionization or extreme-ultraviolet multi-photon inner-shell ionization using free-electron laser pulses. The resulting photoelectrons and fragment ions are captured by a double-sided velocity map imaging spectrometer and projected onto two position-sensitive detectors. [...] Fulltext: JPEG; OpenAccess: PDF PDF (PDFA); 2017-06-2311:17 [PUBDB-2017-05953] Contribution to a conference proceedings/Contribution to a book et al Towards a Fully Integrated Accelerator on a Chip: Dielectric Laser Acceleration (DLA) From the Source to Relativistic Electrons 8th International Particle Accelerator Conference, IPAC 2017, Meeting locationCopenhagen, Denmark, 14 May 2017 - 19 May 2017 JACoW, Geneva, Switzerland, 2520-2525 (2017) [10.18429/JACoW-IPAC2017-WEYB1]   Dielectric laser acceleration of electrons has recently been demonstrated with significantly higher accelerating gradients than other structure-based linear accelerators. Towards the development of an integrated 1 MeV electron accelerator based on dielectric laser accelerator technologies, development in several relevant technologies is needed. [...] OpenAccess: PDF PDF (PDFA); 2017-06-1915:04 [PUBDB-2017-05466] Master Thesis Kärtner, F. Passively mode-locked holmium-doped soliton fiber ring oscillator 82 p. (2017) [10.3204/PUBDB-2017-05466] = HAWK Hochschule für angewandte Wissenschaft und Kunst Hildesheim/Holzminden/Göttingen, Masterarbeit, 2017   Ultrashort laser pulses are used in physical analysis techniques as well as in materials processing and are generated in passively mode-locked oscillators. However, those oscillators produce low pulse energies, but can be used as seeding sources for regenerative amplifiers. [...] OpenAccess: PDF PDF (PDFA);