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Molecular collisions can be studied at very low relative kinetic energies, in the milliKelvin range, by merging codirectional beams with much higher translational energies, extending even to the kiloKelvin range, provided that the beam…

化学物理 · 物理学 2015-06-05 Qi Wei , Igor Lyuksyutov , Dudley Herschbach

Using calculations and mathematical modeling, we demonstrate the feasibility of constructing a synchrotron storage ring for neutral polar molecules. The lattice is a racetrack type 3.6 m in circumference consisting of two of 180-degree…

加速器物理 · 物理学 2009-11-07 H. Nishimura , G. Lambertson , J. G. Kalnins , H. Gould

We 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 perpendicular spatial overlap with the…

原子与分子团簇 · 物理学 2013-07-02 Paul Venn , Hendrik Ulbricht

We show, through modeling and simulation, that it is feasible to construct a storage ring that will store dense bunches of strong-field-seeking polar molecules at 30 m/s (kinetic energy of 2K) and hold them, for several minutes, against…

加速器物理 · 物理学 2009-11-11 Hiroshi Nishimura , Glen Lambertson , Juris G. Kalnins , Harvey Gould

We study a string of neutral atoms with nearest neighbor interaction in a 1D beam splitter configuration, where the longitudinal motion is controlled by a moving optical lattice potential. The dynamics of the atoms crossing the beam…

量子物理 · 物理学 2009-11-07 U. Dorner , P. Fedichev , D. Jaksch , M. Lewenstein , P. Zoller

An electrostatic hexapole lens is used to manipulate the transverse properties of a beam of barium fluoride molecules from a cryogenic buffer gas source. The spatial distribution of the beam is measured by recording state-selective…

In the last years, it was demonstrated that neutral molecules can be loaded on a microchip directly from a supersonic beam. The molecules are confined in microscopic traps that can be moved smoothly over the surface of the chip. Once the…

原子物理 · 物理学 2015-09-15 Gabriele Santambrogio

The manipulation of the motion of neutral molecules with electric or magnetic fields has seen tremendous progress over the last decade. Recently, these techniques have been extended to the manipulation of large and complex molecules. In…

化学物理 · 物理学 2011-04-07 Frank Filsinger , Gerard Meijer , Henrik Stapelfeldt , Henry N. Chapman , Jochen Küpper

We present a design for an atomic synchrotron consisting of 40 hybrid magnetic hexapole lenses arranged in a circle. We show that for realistic parameters, hydrogen atoms with a velocity up to 600 m/s can be stored in a 1-meter diameter…

原子物理 · 物理学 2015-01-26 Aernout P P van der Poel , Katrin Dulitz , Timothy P Softley , Hendrick L Bethlem

We show how one can measure the signal from slow jumps of a single molecule between metastable positions using a setup where the molecule is fixed to one lead, and one of the coupling strengths is controlled externally. Such a measurement…

介观与纳米尺度物理 · 物理学 2013-04-04 Tero T. Heikkila , Wolfgang Belzig

We demonstrate experimentally the guiding of cold and slow ND3 molecules along a thin charged wire over a distance of ~0.34 m through an entire molecular beam apparatus. Trajectory simulations confirm that both linear and quadratic…

原子与分子团簇 · 物理学 2011-12-19 M. Strebel , S. Spieler , F. Stienkemeier , M. Mudrich

The equilibrium properties of isolated ring molecules were investigated using an off-lattice model with no excluded volume but with dynamics that preserve the topological class. Using an efficient set of long range moves, chains of more…

软凝聚态物质 · 物理学 2009-10-31 J. M. Deutsch

We show through rigorous calculations that dielectric microspheres can be organized by an incident electromagnetic plane wave into stable cluster configurations, which we call photonic molecules. The long-range optical binding force arises…

介观与纳米尺度物理 · 物理学 2009-11-11 Jack Ng , Zhifang Lin , C. T. Chan , Ping Sheng

The understanding of molecular structure and function is at the very heart of the chemical and molecular sciences. Experiments that allow for the creation of structurally pure samples and the investigation of their molecular dynamics and…

化学物理 · 物理学 2015-10-20 Yuan-Pin Chang , Daniel A. Horke , Sebastian Trippel , Jochen Küpper

We consider dipolar interactions between heteronuclear molecules in a low-dimensional setup consisting of two one-dimensional tubes. We demonstrate that attraction between molecules in different tubes can overcome intratube repulsion and…

量子气体 · 物理学 2011-08-16 B. Wunsch , N. T. Zinner , I. B. Mekhov , S. -J. Huang , D. -W. Wang , E. Demler

Several laser techniques have been suggested and demonstrated recently for preparing polarizable molecules in rapidly spinning states with a disc-like angular distribution. We consider motion of these spinning discs in inhomogeneous fields,…

化学物理 · 物理学 2015-05-20 Johannes Floss , Erez Gershnabel , Ilya Sh. Averbukh

A strong inhomogeneous static electric field is used to spatially disperse a supersonic beam of polar molecules, according to their quantum state. We show that the molecules residing in the lowest-lying rotational states can be selected and…

We provide a theory of the deflection of polar and non-polar rotating molecules by inhomogeneous static electric field. Rainbow-like features in the angular distribution of the scattered molecules are analyzed in detail. Furthermore, we…

化学物理 · 物理学 2015-05-20 E. Gershnabel , I. Sh. Averbukh

Ring polymers remain a major challenge to our current understanding of polymer dynamics. Experimental results are difficult to interpret because of the uncertainty in the purity and dispersity of the sample. Using both equilibrium and…

软凝聚态物质 · 物理学 2015-06-03 Jonathan D. Halverson , Gary S. Grest , Alexander Y. Grosberg , Kurt Kremer

We introduce and demonstrate a new approach to measuring coherent electron wave packets using high-harmonic spectroscopy. By preparing a molecule in a coherent superposition of electronic states, we show that electronic coherence opens…

化学物理 · 物理学 2014-07-09 P. M. Kraus , S. B. Zhang , A. Gijsbertsen , R. R. Lucchese , N. Rohringer , H. J. Wörner
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