Manipulation of a continuous beam of molecules by light pulsesWe experimentally observe the action of multiple light pulses on the transverse motion of a continuous beam of fullerenes. The light potential is generated by non-resonant ultra-short laser pulses in…Paul Venn, Hendrik Ulbricht·Jul 1, 2013SaveLearn
Collision-Induced Dissociation Studies on Fe(O2)n+ (n=1-6) Clusters: Application of a New Technique Based on Crossed Molecular BeamsGas-phase oxygen-rich iron oxide clusters Fe(O2)n+ (n=1-6), are produced in a molecular beam apparatus. Their stability and structure are investigated by measuring the fragmentation cross sections…Michalis Velegrakis, Claudia Mihesan, Maria Jadraque·Jun 25, 2013SaveLearn
A momentum filter for atomic gasWe propose and demonstrate a momentum filter for atomic gas based on a designed Talbot-Lau interferometer. It consists in two identical optical standing wave pulses separated by a delay equal to odd…Wei Xiong, Xiaoji Zhou, Xuguang Yue et al.·Jun 13, 2013SaveLearn
Dipole transitions in the bound rotational-vibrational spectrum of the heteronuclear molecular ion HD+The non-relativistic three-body Schrödinger equation of the heteronuclear molecular ion HD+ is solved in perimetric coordinates using the Lagrange-mesh method. Energies and wave functions of the…Horacio Olivares Pilón, Daniel Baye·Jun 4, 2013SaveLearn
Full correlation single-particle positron potentials for a positron and a positronium interacting with atomsIn this work we define single-particle potentials for a positron and a positronium atom interacting with light atoms (H, He, Li and Be) by inverting a single-particle Schrödinger equation. For this…A. Zubiaga, F. Tuomisto, M. Puska·May 29, 2013SaveLearn
Coherence revival during the attosecond electronic and nuclear quantum photodynamics of the ozone moleculeA coherent superposition of two electronic states of ozone (ground and Hartley B) is prepared with a UV pump pulse. Using the multiconfiguration time-dependent Hartree approach, we calculate the…Gábor J. Halász, Aurelie Perveaux, Benjamin Lasorne et al.·May 22, 2013SaveLearn
EUV ionization of pure He nanodroplets: Mass-correlated photoelectron imaging, Penning ionization and electron energy-loss spectraThe ionization dynamics of pure He nanodroplets irradiated by EUV radiation is studied using Velocity-Map Imaging PhotoElectron-PhotoIon COincidence (VMI-PEPICO) spectroscopy. We present…D. Buchta, S. R. Krishnan, N. B. Brauer et al.·May 16, 2013SaveLearn
Evidence of several dipolar quasi-invariants in Liquid CrystalsIn a closed quantum system of N coupled spins with magnetic quantum number I, there are about (2I + 1)N constants of motion. However, the possibility of observing such quasi-invariant (QI) states in…C. J. Bonin, C. E. González, H. H. Segnorile et al.·May 6, 2013SaveLearn
Quantum irreversible decoherence behaviour in open quantum systems with few degrees of freedom. Application to 1H NMR reversion experiments in nematic liquid crystalsAn experimental study of NMR spin decoherence in nematic liquid crystals (LC) is presented. Decoherence dynamics can be put in evidence by means of refocusing experiments of the dipolar interactions.…H. H. Segnorile, R. C. Zamar·May 5, 2013SaveLearn
Magnetic Moments of Chromium-Doped Gold Clusters: The Anderson Impurity Model in Finite SystemsThe magnetic moment of a single impurity atom in a finite free electron gas is studied in a combined x-ray magnetic circular dichroism spectroscopy and density functional theory study of…K. Hirsch, V. Zamudio-Bayer, A. Langenberg et al.·Apr 26, 2013SaveLearn
Dynamic polarizabilities for the low lying states of Ca+The dynamic polarizabilities of the 4s, 3d and 4p states of Ca+, are calculated using a relativistic structure model. The wavelengths at which the Stark shifts between different pairs of…Yong-Bo Tang, Hao-Xue Qiao, Ting-Yun Shi et al.·Apr 15, 2013SaveLearn
Docking positrophilic electrons into molecular attractive potential of fluorinated methanesThe present study shows that the positrophilic electrons of a molecule dock into the positron attractive potential region in the annihilation process under the plane-wave approximation. The…Xiaoguang Ma, Feng Wang·Mar 29, 2013SaveLearn
A new intermolecular mechanism to selectively drive photoinduced damagesLow-energy electrons (LEEs) are known to be effective in causing strand breaks in DNA. Recent experiments show that an important direct source of LEEs is the intermolecular Coulombic decay (ICD)…Kirill Gokhberg, Premysl Kolorenc, Alexander I. Kuleff et al.·Mar 26, 2013SaveLearn
Exploring covalently bonded diamondoid particles with valence photoelectron spectroscopyWe investigated the valence electronic structure of diamondoid particles in the gas phase, utilizing valence photoelectron spectroscopy. The samples were singly or doubly covalently bonded dimers or…Tobias Zimmermann, Robert Richter, Andre Knecht et al.·Mar 25, 2013SaveLearn
Large-scale first principles configuration interaction calculations of optical absorption in aluminum clustersWe report the linear optical absorption spectra of aluminum clusters Aln (n=2--5) involving valence transitions, computed using the large-scale all-electron configuration interaction (CI)…Ravindra Shinde, Alok Shukla·Mar 11, 2013SaveLearn
Bound states of dipolar molecules studied with the Berggren expansion methodBound states of dipole-bound negative anions are studied by using a non-adiabatic pseudopotential method and the Berggren expansion involving bound states, decaying resonant states, and non-resonant…K. Fossez, N. Michel, W. Nazarewicz et al.·Mar 8, 2013SaveLearn
Coordination-driven magnetic-to-nonmagnetic transition in manganese doped silicon clustersThe interaction of a single manganese impurity with silicon is analyzed in a combined experimental and theoretical study of the electronic, magnetic, and structural properties of manganese-doped…V. Zamudio-Bayer, L. Leppert, K. Hirsch et al.·Feb 27, 2013SaveLearn
Penning ionization of doped helium nanodroplets following EUV excitationHelium nanodroplets are widely used as a cold, weakly interacting matrix for spectroscopy of embedded species. In this work we excite or ionize doped He droplets using synchrotron radiation and study…D. Buchta, S. R. Krishnan, N. B. Brauer et al.·Feb 8, 2013SaveLearn
Dynamic screening and energy loss of antiprotons colliding with excited Al clustersWe use time-dependent density functional theory to calculate the energy loss of an antiproton colliding with a small Al cluster previously excited. The velocity of the antiproton is such that…Natalia E. Koval, Daniel Sánchez-Portal, Andrey G. Borisov et al.·Jan 28, 2013SaveLearn
The nuclear structure and related properties of some low-lying isomers of free-space On clusters (n=6, 8, 12)After some introductory comments relating to antiferromagnetism of crystalline O2, and brief remarks on the geometry of ozone, Hartree-Fock (HF) theory plus second-order Moller-Plesset (MP2)…G. Forte, G. G. N. Angilella, N. H. March et al.·Jan 24, 2013SaveLearn
Inhomogeneous High-order Harmonic Generation in Krypton ClustersHigh order harmonic generation from clusters is a controversial topic: conflicting theories exist, with different explanations for similar experimental observations. From an experimental point of…H. Ruf, C. Handschin, R. Cireasa et al.·Jan 23, 2013SaveLearn
The second Born approximation of electron-argon elastic scattering in a Bichromatic laser fieldWe study the elastic scattering of atomic argon by electron in the presence of a bichromatic laser field in the second Born approximation. The target atom is approximated by a simple screening…Bin Zhou, Ming-Yang Zheng, Da-Yong Wen·Jan 20, 2013SaveLearn
Simulating pump-probe photo-electron and absorption spectroscopy on the attosecond time-scale with time-dependent density-functional theoryMolecular absorption and photo-electron spectra can be efficiently predicted with real-time time-dependent density-functional theory (TDDFT). We show here how these techniques can be easily extended…Umberto De Giovannini, Gustavo Brunetto, Alberto Castro et al.·Jan 9, 2013SaveLearn
Synchrotron VUV radiation studies of the D1Πu State of H2The 3pπD1Πu state of the H2 molecule was reinvestigated with different techniques at two synchrotron installations. The Fourier-Transform spectrometer in the vacuum ultraviolet wavelength range of…G. D. Dickenson, T. I. Ivanov, M. Roudjane et al.·Jan 3, 2013SaveLearn
VUV Spectroscopic Study of the D1ΠState of Molecular DeuteriumThe D1Πu - X1Σg+ absorption system of molecular deuterium has been re-investigated using the VUV Fourier -Transform (FT) spectrometer at the DESIRS beamline of the synchrotron SOLEIL and…G. D. Dickenson, T. I. Ivanov, W. Ubachs et al.·Jan 3, 2013SaveLearn