Time-resolved predissociation of the vibrationless level of the B state of CH3IThe predissociation dynamics of the vibrationless level of the first Rydberg state 6s (B 2E) state of CH3I has been studied by femtosecond-resolved velocity map imaging of both the CH3 and I…Nicolas Thiré, Raluca Cireasa, David Staedter et al.·Feb 23, 2011SaveLearn
Slow electron attachment as a probe of cluster evaporation processesNeutral alkali clusters efficiently capture low-energy electrons with the aid of long-range polarization attraction. Upon attachment, the electron affinity and kinetic energy are dissipated into…Roman Rabinovitch, Klavs Hansen, Vitaly V. Kresin·Feb 17, 2011SaveLearn
Optimization Schemes for Selective Molecular Cleavage with Tailored Ultrashort Laser PulsesWe present some approaches to the computation of ultra-fast laser pulses capable of selectively breaking molecular bonds. The calculations are based on a mixed quantum-classical description: The…Kevin Krieger, Alberto Castro, E. K. U. Gross·Feb 15, 2011SaveLearn
Weakly bound states of polar molecules in bilayersWe investigate a system of two polarized molecules in a layered trap. The molecules reside in adjacent layers and interact purely via the dipole-dipole interaction. We determine the properties of the…D. V. Fedorov, J. R. Armstrong, N. T. Zinner et al.·Jan 24, 2011SaveLearn
General integral relations for the description of scattering states using the hyperspherical adiabatic basisIn this work we investigate 1+2 reactions within the framework of the hyperspherical adiabatic expansion method. To this aim two integral relations, derived from the Kohn variational principle, are…C. Romero-Redondo, E. Garrido, P. Barletta et al.·Jan 11, 2011SaveLearn
The helium trimer with soft-core potentialsThe helium trimer is studied using two- and three-body soft-core potentials. Realistic helium-helium potentials present an extremely strong short-range repulsion and support a single, very shallow,…A. Kievsky, E. Garrido, C. Romero-Redondo et al.·Jan 10, 2011SaveLearn
Effects of the mean free path and relaxation in a model for the aggregation of particles in superfluid mediaIn this paper, we study a two-dimensional model for the growth of molecular clusters in superfluid helium at low temperature. In the model, particles of diameter a follow random ballistic moves of…S. G. Alves, A. F. Vilesov, S. C. Ferreira·Jan 5, 2011SaveLearn
Scattering of Stark-decelerated OH radicals with rare-gas atomsWe present a combined experimental and theoretical study on the rotationally inelastic scattering of OH (X\,2Π3/2, J=3/2, f) radicals with the collision partners He, Ne, Ar, Kr, Xe, and D2…Ludwig Scharfenberg, Koos B. Gubbels, Moritz Kirste et al.·Jan 5, 2011SaveLearn
Universality and scaling limit of weakly-bound tetramersThe occurrence of a new limit cycle in few-body physics, expressing a universal scaling function relating the binding energies of two consecutive tetramer states, is revealed, considering a…M. R. Hadizadeh, M. T. Yamashita, Lauro Tomio et al.·Jan 2, 2011SaveLearn
The energy landscape of fullerene materials: a comparison between boron, boron-nitride and carbonUsing the minima hopping global geometry optimization method on the density functional potential energy surface we study medium size and large boron clusters. Even though for isolated medium size…Sandip De, Alexander Willand, Maximilian Amsler et al.·Dec 14, 2010SaveLearn
Light Confinement by a Cylindric Metallic Waveguide in Dense Buffer Gas EnvironmentWe report on the implementation of metallic microtubes in a system of rubidium vapour at 230\,bar of argon buffer gas. The high buffer gas pressure leads to a widely pressure broadened linewidth of…Ulrich Vogl, Anne Saß, Frank Vewinger et al.·Dec 7, 2010SaveLearn
The effect of ionization on the global minima of small and medium sized silicon and magnesium clustersWe re-examine the question of whether the geometrical ground state of neutral and ionized clusters are identical. Using a well defined criterion for being "identical" together, the extensive…Sandip De, S. Alireza Ghasemi, Alexander Willand et al.·Nov 24, 2010SaveLearn
Rare-gas clusters in intense VUV, XUV and soft x-ray pulses: Signatures of the transition from nanoplasma-driven cluster expansion to Coulomb explosion in ion and electron spectraWe investigate the wavelength dependent ionization, heating, and expansion dynamics of medium-sized rare-gas clusters (Ar923) under intense femtosecond short-wavelength free electron laser…Mathias Arbeiter, Thomas Fennel·Nov 9, 2010SaveLearn
Vacancy decay in endohedral atoms: the role of non-central position of the atomWe demonstrate that the Auger decay rate in an endohedral atom is very sensitive to the atom's location in the fullerene cage. Two additional decay channels appear in an endohedral system: (a)…Andrey V. Korol, Andrey V. Solov'yov·Nov 9, 2010SaveLearn
Integrability of two-component nonautonomous nonlinear Schrödinger equationWe investigate the integrability of generalized nonautonomous nonlinear Schrödinger (NLS) equations governing the dynamics of the single- and double-component Bose-Einstein condensates (BECs). The…Cai-Ying Ding, Fang Zhang, Dun Zhao et al.·Nov 5, 2010SaveLearn
Vibrational relaxation and dephasing of Rb2 attached to helium nanodropletsThe vibrational wave-packet dynamics of diatomic rubidium molecules (Rb2) in triplet states formed on the surface of superfluid helium nanodroplets is investigated both experimentally and…Barbara Grüner, Martin Schlesinger, Philipp Heister et al.·Nov 3, 2010SaveLearn
How Metallic are Small Sodium Clusters?Cryogenic cluster beam experiments have provided crucial insights into the evolution of the metallic state from the atom to the bulk. Surprisingly, one of the most fundamental metallic properties,…John Bowlan, Anthony Liang, Walt A. de Heer·Oct 25, 2010SaveLearn
Two-step melting of Na41+The heat capacity of the mass selected Na41+ cluster has been measured using a differential nanocalorimetry method. A two-peak structure appears in the heat capacity curve of Na41+, whereas Schmidt…Sébastien Zamith, Pierre Labastie, Fabien Chirot et al.·Oct 18, 2010SaveLearn
Solution of three-dimensional Faddeev equations: ultracold Helium trimer calculations with a public quantum three-body codeWe present an illustration of using a quantum three-body code being prepared for public release. The code is based on iterative solving of the three-dimensional Faddeev equations. The code is easy to…E. A. Kolganova, V. Roudnev, M. Cavagnero·Oct 7, 2010SaveLearn
Hydrogen (H2) Storage in Clathrate HydratesStructure, stability and reactivity of clathrate hydrates with or without hydrogen encapsulation are studied using standard density functional calculations. Conceptual density functional theory based…Pratim Kumar Chattaraj, Sateesh Bandaru, Sukanta Mondal·Oct 4, 2010SaveLearn
Optical activity tensor for radiating atomic and molecular systemsThe optical activity tensor (OAT) is explicitly derived. It is shown that to evaluate a large number of effects related to optical activity of some atomic/molecular system at arbitrary frequency ω…Alexei M. Frolov, David M. Wardlaw·Sep 29, 2010SaveLearn
Resonant charging of Xe clusters in Helium nanodroplets under intense laser fieldsWe theoretically investigate the impact of multiple plasmon resonances on the charging of Xe clusters embedded in He nanodroplets under intense pump-probe laser excitation. Our molecular dynamics…Christian Peltz, Thomas Fennel·Sep 23, 2010SaveLearn
A molecular superfluid: non-classical rotations in doped para-hydrogen clustersClusters of para-hydrogen (pH2) have been predicted to exhibit superfluid behavior, but direct observation of this phenomenon has been elusive. Combining experiments and theoretical simulations, we…Hui Li, Robert J. Le Roy, Pierre-Nicholas Roy et al.·Sep 23, 2010SaveLearn
Electron-Ion Interaction Effects in Attosecond Time-Resolved Photoelectron SpectraPhotoionization by attosecond (as) extreme ultraviolet (xuv) pulses into the laser-dressed continuum of the ionized atom is commonly described in strong-field approximation (SFA), neglecting the…C. -H. Zhang, U. Thumm·Sep 20, 2010SaveLearn
Dynamics of photo-activated Coulomb complexesIntense light with frequencies above typical atomic or molecular ionization potentials as provided by free-electron lasers couples many photons into extended targets such as clusters and…Christian Gnodtke, Ulf Saalmann, Jan-Michael Rost·Sep 14, 2010SaveLearn