FS-LA

Latest additions:
2017-12-07
14:54
DBCoverage [PUBDB-2017-12900] Journal
; ; ; et al
Direct Measurement of the Pulse Duration and Frequency Chirp of Seeded XUV Free Electron Laser Pulses
ddc:530
We report on a direct time-domain measurement of the temporal properties of a seeded free-electron laser pulse in the extreme ultraviolet spectral range. Utilizing the oscillating electromagnetic field of terahertz radiation, a single-shot THz streak-camera was applied for measuring the duration as well as spectral phase of the generated intense XUV pulses. [...]
Restricted: Download fulltextPDF Download fulltextPDF (PDFA); External link: Download fulltextFulltext

Detailed record - Similar records
2017-12-07
13:58
OpenAccess [PUBDB-2017-12869] Contribution to a conference proceedings/Contribution to a book
; ; ; et al
Experience in Operating sFLASH With High-Gain Harmonic Generation
8th International Particle Accelerator Conference, IPAC17, Meeting locationKopenhagen, Denmark, 15 May 2017 - 19 May 20172017-05-152017-05-19 Geneva : JACoW, 2596-2599 (2017) [10.18429/JACoW-IPAC2017-WEPAB016]  GO
sFLASH, the experimental setup for external seeding of free-electron lasers (FEL) at FLASH, has been operated in the high-gain harmonic generation (HGHG) mode. A detailed characterization of the laser-induced energy modulation, as well as the temporal characterization of the seeded FEL pulses is possible by using a transverse deflecting structure and an electron spectrometer. [...]
OpenAccess: Download fulltextPDF Download fulltextPDF (PDFA); External link: Download fulltextFulltext

Detailed record - Similar records
2017-11-14
13:20
[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 20162016-12-142016-12-16

Detailed record - Similar records
2017-11-13
18:29
[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 20172017-01-252017-01-27

Detailed record - Similar records
2017-11-13
18:06
OpenAccess [PUBDB-2017-11919] Journal Article
; ; ; et al
Micro-Focusing of Broadband High-Order Harmonic Radiation by a Double Toroidal Mirror
ddc:600
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: Download fulltextPDF Download fulltextPDF (PDFA);

Detailed record - Similar records
2017-11-13
14:53
[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, USA
38th international free electron laser conference, Meeting locationSanta Fe, NM USA, USA, 20 Aug 2017 - 25 Aug 20172017-08-202017-08-25
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 [...]

Detailed record - Similar records
2017-11-09
10:46
OpenAccess [PUBDB-2017-11808] Journal Article
; ; ; et al
Coulomb-explosion imaging of concurrent CH$_{2}$BrI photodissociation dynamics
ddc:530
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: Download fulltextPDF Download fulltextPDF (PDFA); External link: Download fulltextFulltext

Detailed record - Similar records
2017-09-13
16:13
OpenAccess [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 20172017-05-142017-05-19 Geneva : JACoW, 2607-2610 (2017) [10.18429/JACoW-IPAC2017-WEPAB019]  GO
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: Download fulltextPDF Download fulltextPDF (PDFA);

Detailed record - Similar records
2017-08-09
15:15
OpenAccess [PUBDB-2017-09033] Journal Article
; ; ; et al
Single-shot Monitoring of Ultrafast Processes via X-ray Streaking at a Free Electron Laser
ddc:000
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: Download fulltextPDF Download fulltextPDF (PDFA);

Detailed record - Similar records
2017-07-13
16:21
OpenAccess [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] ddc:540
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: Download fulltextJPEG; OpenAccess: Download fulltextPDF Download fulltextPDF (PDFA);

Detailed record - Similar records