FS-PS

 2019-09-0414:18 [PUBDB-2019-03223] Journal Article Niti ; et al In-situ growth of iron mononitride thin films studied using x-ray absorption spectroscopy and nuclear resonant scattering Hyperfine interactions 240(1), 99 (2019) [10.1007/s10751-019-1633-4]   We studied the structural and magnetic properties of in-situ grown iron mononitride (FeN) thin films. Initial stages of film growth were trapped utilizing synchrotron based soft x-ray absorption near edge spectroscopy (XANES) at the N K-edge and nuclear resonant scattering (NRS). [...] Restricted: PDF PDF (PDFA); 2019-08-2915:16 [PUBDB-2019-03145] Journal Article Wiese, J. Strong-field photoelectron momentum imaging of OCS at finely resolved incident intensities New journal of physics 21(8), 083011 (2019) [10.1088/1367-2630/ab34e8]   Photoelectron momentum distributions from strong-field ionization of carbonyl sulfide with 800 nm central-wavelength laser pulses at various peak intensities from 4.6 to 13 × 10$^{13}$ W cm$^{−2}$ were recorded and analyzed regarding resonant Rydberg states and photoelectron orbital angular momentum. The evaluation of the differentials of the momentum distributions with respect to the peak intensity highly suppressed the impact of focal volume averaging and allowed for the unambiguous recognition of Freeman resonances [...] Fulltext: PNG; OpenAccess: PDF PDF (PDFA); 2019-08-2913:38 [PUBDB-2019-03144] Journal Article et al Structural periodicity in laser additive manufactured Zr-based bulk metallic glass Applied physics letters 115(3), 031902 (2019) [10.1063/1.5100050]   Additive manufacturing of bulk metallic glasses (BMGs) allows for effective bypassing of critical casting thickness constraints for glassyalloys, opening up this exciting material class to new applications. An open question is how the laser processing of such materials affects theshort-range structural order, a critical mediating parameter for glass deformation. [...] Published on 2019-07-16. Available in OpenAccess from 2020-07-16.: PDF PDF (PDFA); 2019-08-1221:47 [PUBDB-2019-02992] Journal Article et al Roadmap on photonic, electronic and atomic collision physics: I. Light–matter interaction Journal of physics / B 52(17), 171001 (2019) [10.1088/1361-6455/ab26d7]   We publish three Roadmaps on photonic, electronic and atomic collision physics in order to celebrate the 60th anniversary of the ICPEAC conference. In Roadmap I, we focus on the light–matter interaction. [...] OpenAccess: PDF PDF (PDFA); 2019-08-0909:57 [PUBDB-2019-02949] Journal Article et al Single-crystal diffractometer coupled with double-sided laser heating system at the Extreme Conditions Beamline P02.2 at PETRAIII Review of scientific instruments 90(7), 073907 (2019) [10.1063/1.5108881]   Combination of in situ laser heating with single-crystal X-ray diffraction (scXRD) in diamond anvil cells (DACs) provides a tool to studycrystal structures and/or chemistry of materials at simultaneous high pressures and high temperatures. Here, we describe the first dedicatedsingle-crystal X-ray diffractometer coupled with double-sided laser heating (dsLH) system. [...] Published on 2019-07-31. Available in OpenAccess from 2020-07-31.: PDF PDF (PDFA); 2019-07-2206:45 [PUBDB-2019-02755] Journal Article et al High-pressure synthesis of ultraincompressible hard rhenium nitride pernitride $Re_{2}(N_{2})(N)_{2}$ stable at ambient conditions Nature Communications 10, 2994 (2019) [10.1038/s41467-019-10995-3]   High-pressure synthesis in diamond anvil cells can yield unique compounds with advancedproperties, but often they are either unrecoverable at ambient conditions or produced inquantity insufficient for properties characterization. Here we report the synthesis of metallic,ultraincompressible (K$_0$ = 428(10) GPa), and very hard (nanoindentation hardness 36.7(8)GPa) rhenium nitride pernitride Re$_2$(N$_2$)(N)$_2$. [...] OpenAccess: PDF PDF (PDFA); 2019-07-0917:13 [PUBDB-2019-02681] Journal Article et al Surface structure determination by x-ray standing waves at a free-electron laser New journal of physics 21(3), 033031 (2019) [10.1088/1367-2630/aafa47]   We demonstrate the structural sensitivity and accuracy of the x-ray standing wave technique at a high repetition rate free-electron laser, FLASH at DESY in Hamburg, by measuring the photoelectron yield from the surface SiO$_2$ of Mo/Si multilayers. These experiments open up the possibility to obtain unprecedented structural information of adsorbate and surface atoms with picometer spatial and femtosecond temporal resolution [...] OpenAccess: PDF PDF (PDFA); 2019-06-0321:21 [PUBDB-2019-02410] Journal Article et al Photoionization and photofragmentation of singly charged positive and negative Sc$_3$N@C$_{80}$ endohedral fullerene ions Physical review / A 99(6), 063401 (2019) [10.1103/PhysRevA.99.063401]   Photoprocesses of the endohedral fullerene ions Sc$_3$N@C$_{80}^+$ and Sc$_3$N@C$_{80}^-$ in the gas phase have been investigated in the photon energy ranges 30--50 eV and 280--420 eV. Single and double ionization as well as single ionization accompanied by the release of a C$_2$ dimer were observed as a function of the photon energy for the positive parent ion and double detachment was measured for the negative parent ion. [...] OpenAccess: PDF PDF (PDFA); External link: Fulltext 2019-05-2607:50 [PUBDB-2019-02368] Journal Article et al The photon‐ion merged‐beams experiment PIPE at PETRA III—The first five years X-ray spectrometry XXX, xrs.3035 (2019) [10.1002/xrs.3035]   The Photon-Ion Spectrometer at PETRAIII—in short, PIPE—is a permanentlyinstalled user facility at the "Variable Polarization XUV Beamline" P04 of thesynchrotron light source PETRA III operated by DESY in Hamburg, Germany.The careful design of the PIPE ion-optics in combination with the record-highphoton flux at P04 has lead to a breakthrough in experimental studies ofphoton interactions with ionized small quantum systems. This short reviewprovides an overview over the published scientific results from photon-ionmerged-beams experiments at PIPE that were obtained since the start of P04operations in 2013. [...] Restricted: PDF PDF (PDFA); External link: Fulltext 2019-04-2514:46 [PUBDB-2019-02076] Journal Article et al Spaping femtosecond laser pulses at short wavelength with grazing-incidence optics Optics express 27(9), 13479 - 13491 (2019) [10.1364/OE.27.013479]   We present the design of an extreme ultraviolet (XUV) pulse shaper relying on reflective optics. The instrument will allow tailoring of the time-frequency spectrum of femtosecond pulses generated by seeded free-electron lasers (FEL) and high-harmonic generation (HHG) sources down to a central wavelength of ~15 nm [...] OpenAccess: PDF PDF (PDFA);