Browsing by Subject "Molecules"

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  • Anomalous molecular orbital variation upon adsorption on a wide band gap insulator 
    Chen, W.; Tegenkamp, Christoph; Pfnür, Herbert; Bredow, T. (College Park, MD : American Institute of Physics, 2010)
    It is commonly believed that organic molecules are physisorbed on the ideal nonpolar surfaces of wide band gap insulators with limited variation in the electronic properties of the adsorbate molecule. On the basis of first ...
  • Correlation of electronic and local structure of 4-hydroxy-thiophenol on NaCl(100) and Ag(100) 
    Tegenkamp, Christoph; Pfnür, Herbert (College Park, MD : American Institute of Physics, 2003)
    The results of the electronic structure of HTP on NaCl(100) and on poly-Ag(100) obtained with UPS and EELS are presented. Due to the relatively weak interactions of HTP on both surfaces studied, and the low saturation ...
  • Diffusion Mechanisms of Dissolved Gases in Transformer Oil Influenced with Moisture Based on Molecular Dynamics Simulation 
    Jiang, Tianyan; Yang, Jie; Yang, Xiao; Li, Yang; Bi, Maoqiang; Zhou, Xin (Washington, DC : ACS Publications, 2022)
    Dissolved Gas Analysis (DGA) of insulating oil is widely used for diagnosing transformer incipient faults. Moisture is a major contaminant and degradation byproduct of transformer insulating oil. In this paper, molecular ...
  • Efficient procedure for the measurement of preresonant excitation profiles in UV Raman spectroscopy 
    Höhl, Martin; Roth, Bernhard; Morgner, Uwe; Meinhardt-Wollweber, Merve (College Park, ML : American Physical Society, 2017)
    Resonance Raman spectroscopy (RRS) is a promising technique for investigating samples with low concentrations of single constituents or many different constituents. The wavelength dependent resonance enhancement (resonance ...
  • Energy scaling of the product state distribution for three-body recombination of ultracold atoms 
    Haze, Shinsuke; D'Incao, José P.; Dorer, Dominik; Li, Jinglun; Deiß, Markus; Tiemann, Eberhard; Julienne, Paul S.; Denschlag, Johannes Hecker (College Park, MD : APS, 2023)
    Three-body recombination is a chemical reaction where the collision of three atoms leads to the formation of a diatomic molecule. In the ultracold regime it is expected that the production rate of a molecule generally ...
  • Heteronuclear Limit of Strong-Field Ionization: Fragmentation of HeH+ by Intense Ultrashort Laser Pulses 
    Wustelt, Philipp; Oppermann, Florian; Yue, Lun; Möller, Max; Stöhlker, Thomas; Lein, Manfred; Gräfe, Stefanie; Paulus, Gerhard G.; Sayler, A. Max (College Park, MD : American Physical Society, 2018)
    The laser-induced fragmentation dynamics of this most fundamental polar molecule HeH+ are measured using an ion beam of helium hydride and an isotopologue at various wavelengths and intensities. In contrast to the prevailing ...
  • Microwave spectroscopic detection of flame-sampled combustion intermediates 
    Hansen, N.; Wullenkord, J.; Obenchain, D.A.; Graf, I.; Kohse-Höinghaus, K.; Grabow, Jens-Uwe (Cambridge : Royal Society of Chemistry, 2017)
    Microwave spectroscopy probes the rotational transitions of polar molecules in the gas phase and is a proven technique for the detection and identification of short-lived molecules produced from a variety of molecular ...
  • Molecular imaging using high-order harmonic generation and above-threshold ionization 
    van der Zwan, Elmar V.; Lein, Manfred (College Park, MD : American Physical Society, 2012)
    Accurate molecular imaging via high-order harmonic generation relies on comparing harmonic emission from a laser-irradiated molecule and an adequate reference system. However, an ideal reference atom with the same ionization ...
  • Optical and electron microscopy study of laser-based intracellular molecule delivery using peptide-conjugated photodispersible gold nanoparticle agglomerates 
    Krawinkel, Judith; Richter, Undine; Torres-Mapa, Maria Leilani; Westermann, Martin; Gamrad, Lisa; Rehbock, Christoph; Barcikowski, Stephan; Heisterkamp, Alexander (London : BioMed Central Ltd., 2016)
    Background: Cell-penetrating peptides (CPPs) can act as carriers for therapeutic molecules such as drugs and genetic constructs for medical applications. The triggered release of the molecule into the cytoplasm can be ...
  • Orbital-angular-momentum-resolved diagnostics for tracking internal phase evolution in multi-bound solitons 
    Zhao, Yuwei; Fan, Jintao; Song, Youjian; Hu, Minglie (Washington, DC : Optica, 2021)
    The generation of multi-bound solitons is a fascinating subject of investigation in many conservative and dissipative systems, such as photonics, fluid mechanics, Bose-Einstein condensates, and so on. In this study, we ...
  • Photoelectron circular dichroism of chiral molecules studied with a continuum-state-corrected strong-field approximation 
    Dreissigacker, Ingo; Lein, Manfred (College Park, MD : American Physical Society, 2014)
    Motivated by recent experiments on circular dichroism in the photoelectron momentum distributions from strong-field ionization of chiral molecules [C. Lux, Angew. Chem. Int. Ed. 51, 5001 (2012)1433-785110.1002/anie.201109035; ...
  • Polar molecules in frustrated triangular ladders 
    Mishra, Tapan; Greschner, Sebastian; Santos, Luis (College Park, MD : American Physical Society, 2015)
    Polar molecules in geometrically frustrated lattices may result in a very rich landscape of quantum phases, due to the nontrivial interplay between frustration, and two- and possibly three-body intersite interactions. In ...
  • Roadmap on STIRAP applications 
    Bergmann, Klaas; Nägerl, Hanns-Christoph; Panda, Cristian; Gabrielse, Gerald; Miloglyadov, Eduard; Quack, Martin; Seyfang, Georg; Wichmann, Gunther; Ospelkaus, Silke; Kuhn, Axel; Longhi, Stefano; Szameit, Alexander; Pirro, Philipp; Hillebrands, Burkard; Zhu, Xue-Feng; Zhu, Jie; Drewsen, Michael; Hensinger, Winfried K.; Weidt, Sebastian; Halfmann, Thomas; Wang, Hai-Lin; Paraoanu, Gheorghe Sorin; Vitanov, Nikolay V.; Mompart, Jordi; Busch, Thomas; Barnum, Timothy J.; Grimes, David D.; Field, Robert W.; Raizen, Mark G.; Narevicius, Edvardas; Auzinsh, Marcis; Budker, Dmitry; Pálffy, Adriana; Keitel, Christoph H. (Bristol : Institute of Physics Publishing, 2019)
    STIRAP (stimulated Raman adiabatic passage) is a powerful laser-based method, usually involving two photons, for efficient and selective transfer of populations between quantum states. A particularly interesting feature ...
  • Role of the metal cation in the dehydration of the microporous metal–organic frameworks CPO-27-M 
    Rosnes, Mali H.; Pato-Doldán, Breogán; Johnsen, Rune E.; Mundstock, Alexander; Caro, Jürgen; Dietzel, Pascal D.C. (Amsterdam [u.a.] : Elsevier, 2020)
    The dehydration of the CPO-27-M (M-MOF-74, M = Zn, Co, Ni, Mg, Mn, Cu) metal-organic framework series has been investigated comprehensively using in situ variable temperature powder X-ray diffraction (VT-PXRD) and thermal ...
  • Three-beam atom interferometer 
    Hinderthür, H.; Pautz, A.; Rieger, V.; Ruschewitz, F.; Peng, J.L.; Sengstock, K.; Ertmer, Wolfgang (American Physical Society, 1997)
    We present an atom interferometer based on the interference of three partial matter waves in three different internal and external states. Coherent laser excitation acts as a beamsplitter to create a superposition state ...
  • Two-photon optical shielding of collisions between ultracold polar molecules 
    Karam, Charbel; Vexiau, Romain; Bouloufa-Maafa, Nadia; Dulieu, Olivier; Lepers, Maxence; Borgloh, Mara Meyer zum Alten; Ospelkaus, Silke; Karpa, Leon (College Park, MD : APS, 2023)
    We propose a method to engineer repulsive long-range interactions between ultracold ground-state molecules using optical fields, thus preventing short-range collisional losses. It maps the microwave coupling recently used ...
  • Versatile electric fields for the manipulation of ultracold NaK molecules 
    Gempel, M.W.; Hartmann, T.; Schulze, Torben A.; Voges, K.K.; Zenesini, Alessandro; Ospelkaus, Silke (Bristol : Institute of Physics Publishing, 2016)
    In this paper, we present an electrode geometry for the manipulation of ultracold, rovibrational ground state NaK molecules. The electrode system allows to induce a dipole moment in trapped diatomic NaK molecules with a ...
  • Vibrational-state and isotope dependence of high-order harmonic generation in water molecules 
    Falge, Mirjam; Engel, Volker; Lein, Manfred (College Park, MD : American Physical Society, 2010)
    We report calculations on high-order harmonic generation in water molecules. Spectra are determined for various initial vibrational states of H2O and its isotope D2O. It is demonstrated that the ratio of the spectra for ...
  • A Zeeman slower for diatomic molecules 
    Petzold, M.; Kaebert, P.; Gersema, P.; Siercke, M.; Ospelkaus, S. (Bristol : Institute of Physics Publishing, 2018)
    We present a novel slowing scheme for beams of laser-coolable diatomic molecules reminiscent of Zeeman slowing of atomic beams. The scheme results in efficient compression of the one-dimensional velocity distribution to ...