# FS-CFEL-1

Latest additions:
 2017-10-2012:14 [PUBDB-2017-11466] Preprint/Report et al Femtosecond x-ray diffraction from an aerosolized beam of protein nanocrystals [arXiv:1702.04014] We demonstrate near-atomic-resolution Bragg diffraction from aerosolized single granulovirus crystals using an x-ray free-electron laser. The form of the aerosol injector is nearly identical to conventional liquid-microjet nozzles, but the x-ray-scattering background is reduced by several orders of magnitude by the use of helium carrier gas rather than liquid. [...] OpenAccess: PDF; 2017-10-1811:07 [PUBDB-2017-11440] Report/Journal Article et al Characterizing and optimizing a laser-desorption molecular beam source [arXiv:1706.04083] The journal of chemical physics 147(14), 144204 (2017) [10.1063/1.4991639]   The design and characterization of a new laser-desorption molecular beam source, tailored for use in x-ray free-electron laser and ultrashort-pulse laser imaging experiments, is presented. It consists of a single mechanical unit containing all source components, including the molecular-beam valve, the sample, and the fiber-coupled desorption laser, which is movable in five axes, as required for experiments at central facilities. [...] OpenAccess: PDF PDF (PDFA); 2017-10-1021:00 [PUBDB-2017-11260] Journal Article Küpper, J. Communication: General variational approach to nuclear-quadrupole coupling in rovibrational spectra of polyatomic molecules The journal of chemical physics 147(14), 141101 (2017) [10.1063/1.5002533]   A general algorithm for computing the quadrupole-hyperfine effects in the rovibrational spectra of polyatomic molecules is presented for the case of ammonia (NH$_3$). The method extends the general variational approach TROVE by adding the extra term in the Hamiltonian that describes the nuclear quadrupole coupling, with no inherent limitation on the number of quadrupolar nuclei in a molecule. [...] Fulltext: GIF; OpenAccess: 1%2E5002533 - PDF PDF (PDFA); nh3_qmom - PDF PDF (PDFA); 2017-10-1016:27 [PUBDB-2017-11259] Poster Küpper, J. Laser-induced acoustic desorption of large molecules DPG-Frühjahrstagung der Sektion AMOP, Meeting locationHeidelberg, Germany, 23 Mar 2015 - 27 Mar 2015 State-, conformer-, and size-selection of small neutral molecules can be achieved through the dispersion of the molecular beam with electric fields [1]. State-selected small molecules can then be well aligned and oriented by laser and static electric fields [2]. [...] External link: Fulltext 2017-10-1015:45 [PUBDB-2017-11257] Conference Presentation (After Call) et al Laser-induced acoustic desorption of large molecules for FEL experiments DPG-Frühjahrstagung SAMOP, Meeting locationMainz, Germany, 6 Mar 2017 - 10 Mar 2017 Laser-induced acoustic desorption (LIAD) is a promising technique for gentle and efficient preparation of large intact neutral molecules into the gas-phase [1]. Here we demonstrate our newly set-up LIAD source, designed for prolonged measurement time, as required by FEL experiments, through automatic sample replenishment. [...] External link: Fulltext 2017-10-1013:52 [PUBDB-2017-11255] Journal Article et al Impulsive laser-induced alignment of OCS molecules at FERMI Physical chemistry, chemical physics 19(30), 19733 - 19739 (2017) [10.1039/C7CP01812F]   We demonstrate the experimental realization of impulsive alignment of carbonyl sulfide (OCS) molecules at the Low Density Matter Beamline (LDM) at the free-electron laser FERMI. OCS molecules in a molecular beam were impulsively aligned using 200 fs pulses from a near-infrared laser [...] Restricted: PDF PDF (PDFA); 2017-10-1010:56 [PUBDB-2017-11253] Talk (non-conference) (Other) Küpper, J. Photophysics and diffractive imaging of controlled gas-phase molecules 2017-10-0515:34 [PUBDB-2017-11182] Journal Article et al Post-Sample Aperture for Low Background Diffraction Experiments of X-Ray Free-Electron Lasers 2017-09-2913:41 [PUBDB-2017-11083] Conference Presentation (Invited) Küpper, J. Imaging molecules through strong-field-ionization and electron rescattering FRIAS Junior Researcher Conference - Beyond Molecular Movies: Bringing time-domain spectroscopy to diffraction imaging, Meeting locationFreiburg, Freiburg Institute for Advanced Studies (FRIAS), Albert-Ludwigs-Universität Freiburg, Germany, 13 Sep 2017 - 16 Sep 2017 2017-09-2913:31 [PUBDB-2017-11082] Conference Presentation (Invited) Küpper, J. Conformer manipulation in large molecular systems ASPIRE network meeting, Meeting locationAbbaye des Vaux de Cernay, France, 11 Sep 2017 - 13 Sep 2017