CFEL-ARD

Latest additions:
2018-01-02
08:52
Embargoed OpenAccess [PUBDB-2018-00001] Journal Article
; ; ; et al
Thermal x-ray diffraction and near-field phase contrast imaging
epl 120(1), 16003 (2017) [10.1209/0295-5075/120/16003]  GO
ddc:530
Using higher-order coherence of thermal light sources, the resolution power of standard x-ray imaging techniques can be enhanced. In this work, we applied the higher-order measurement to far-field x-ray diffraction and near-field phase contrast imaging (PCI), in order to achieve superresolution in x-ray diffraction and obtain enhanced intensity contrast in PCI. [...]
Published on 2017-12-27. Available in OpenAccess from 2018-12-27.: Download fulltextPDF Download fulltextPDF (PDFA); Restricted: Download fulltextPDF Download fulltextPDF (PDFA);

Detailed record - Similar records
2017-12-22
10:33
OpenAccess [PUBDB-2017-14028] Journal Article
; ; ; et al
Radiation damage free ghost diffraction with atomic resolution
ddc:530
The x-ray free electron lasers can enable diffractive structural determination of protein nanocrystals and single molecules that are too small and radiation-sensitive for conventional x-ray diffraction. However the electronic form factor may be modified during the ultrashort x-ray pulse due to photoionization and electron cascade caused by the intense x-ray pulse. [...]
OpenAccess: Download fulltextPDF Download fulltextPDF (PDFA);

Detailed record - Similar records
2017-08-29
10:31
OpenAccess [PUBDB-2017-10022] Journal Article
; ;
Compression of high-density 0.16 pC electron bunches through high field gradients for ultrafast single shot electron diffraction: The Compact RF Gun
ddc:530
We present an RF gun design for single shot ultrafast electron diffraction experiments that can produce sub-100 fs high-charge electron bunches in the 130 keV energy range. Our simulations show that our proposed half-cell RF cavity is capable of producing 137 keV, 27 fs rms (60 fs FWHM), 106 electron bunches with an rms spot size of 276 μm and a transverse coherence length of 2.0 nm. [...]
OpenAccess: Download fulltextPDF Download fulltextPDF (PDFA);

Detailed record - Similar records
2017-08-21
15:12
[PUBDB-2017-09601] Journal Article
; ; ; et al
An endstation for resonant inelastic X-ray scattering studies of solid and liquid samples
ddc:540
A novel experimental setup is presented for resonant inelastic X-ray scattering investigations of solid and liquid samples in the soft X-ray region for studying the complex electronic configuration of (bio)chemical systems. The uniqueness of the apparatus is its high flexibility combined with optimal energy resolution and energy range ratio. [...]
Restricted: Download fulltextPDF Download fulltextPDF (PDFA);

Detailed record - Similar records
2017-04-06
08:33
OpenAccess [PUBDB-2017-01527] Journal Article
; ; ; et al
Study on laser characteristics of Ho:YLF regenerative ampliers: Operation regimes, gain dynamics, and highly stable operation points
ddc:530
We present a comprehensive study of laser pulse amplification of Ho:YLF regenerative amplifiers (RAs) with respect to operation regimes, gain dynamics, and output pulse stability. The findings are expected to be more generic than for this specific gain material. [...]
OpenAccess: Download fulltextPDF;

Detailed record - Similar records
2017-03-21
16:21
[PUBDB-2017-01439] Journal Article
; ; ; et al
Hot carrier relaxation in CdTe via phonon–plasmon modes
ddc:530
Carrier and lattice dynamics of laser excited CdTe was studied by time-resolved reflectivity for excitation fluences spanning about three orders of magnitude, from 0.064 to 6.14 mJ cm$^{−2}$. At fluences below 1 mJ cm$^{−2}$ the transient reflectivity is dominated by the dynamics of hybrid phonon–plasmon modes. [...]
Restricted: Download fulltextPDF;

Detailed record - Similar records
2017-01-16
11:23
OpenAccess [PUBDB-2017-00571] Journal Article/Contribution to a conference proceedings/Contribution to a book
; ; ; et al
High energetic and highly stable pulses from a Ho:YLF regenerative amplifier
Solid State Lasers XXV: Technology and Devices
Solid State Lasers XXV: Technology and Devices, SPIE LASE, Meeting locationSan Francisco, California, 15 Jul 2016 - 20 Jul 20162016-07-152016-07-20
Proceedings of SPIE 9726, 97260S (2016) [10.1117/12.2212236]  GO
ddc:620
We present results from our Ho:YLF regenerative amplifier (RA) producing up to 6.9 mJ at a repetition rate of 1 kHz and up to 12.9 mJ at a repetition rate of 10 Hz. At 1 kHz, we observe strongly bifurcating pulses, starting with certain round trip number, but the measurements identify a highly stable operation point that lies “hidden” beyond the instability region. [...]
OpenAccess: Download fulltextPDF;

Detailed record - Similar records
2017-01-09
14:47
Embargoed OpenAccess [PUBDB-2017-00332] Journal Article
;
Measurement of Ultra Low Transverse Emittance at REGAE
ddc:530
The linear accelerator REGAE at DESY produces short and low charged electron bunches, on the one hand to resolve the excitation transitions of atoms temporally by pump-probe electron diffraction experiments and on the other hand to investigate principal mechanisms of laser plasma acceleration. For both cases a high quality electron beam is required which can be identified with a small beam emittance. [...]
Published on 2016-01-27. Available in OpenAccess from 2017-01-27.: Download fulltextPDF; Restricted: Download fulltextPDF;

Detailed record - Similar records
2017-01-06
16:05
[PUBDB-2017-00240] Journal Article
; ; ; et al
Fixed target combined with spectral mapping: approaching 100% hit rates for serial crystallography
ddc:570
The advent of ultrafast highly brilliant coherent X-ray free-electron laser sources has driven the development of novel structure-determination approaches for proteins, and promises visualization of protein dynamics on sub-picosecond timescales with full atomic resolution. Significant efforts are being applied to the development of sample-delivery systems that allow these unique sources to be most efficiently exploited for high-throughput serial femtosecond crystallography. [...]

Detailed record - Similar records
2016-11-29
12:51
OpenAccess [PUBDB-2016-05704] Journal Article
; ; ; et al
Two-electron processes in multiple ionization under strong soft-x-ray radiation
ddc:530
In a combined experimental and theoretical study we have investigated the ionization of atomic argon upon irradiation with intense soft-x-ray pulses of 105 eV photon energy from the free-electron laser FLASH. The measured ion yields show charge states up to Ar$^{7+}$. [...]
Fulltext: Download fulltextPNG; OpenAccess: Download fulltextPDF Download fulltextPDF (PDFA);

Detailed record - Similar records