ITAMP CALENDAR

2004

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January, 2004

Seminars

Visitors

• Dr. Svetlana Kotochigova, NIST, Jan 4-14
• Alexei A. Buchachenko, Moscow State University, Jan 8-30
• Gerrit C. Groenenboom, University of Nijmegen, Jan 8-21
• Françoise Masnou-Seeuws, Laboratoire Aimé Cotton, Jan 8-20
• Krzysztof Szalewicz, University of Delaware, Jan 8-16
• Enrico Bodo, University of Rome La Sapienza, Jan 8-16

Workshop

January 8-10, 2004, Ultracold Polar Molecules: Formation and Collisions, (Joint Workshop with Harvard/MIT Center for Ultracold Atoms), organized by John Doyle, Jeremy Hutson and Roman Krems

February, 2004

Seminars

• February 18, Wednesday, 4:30 p.m., Jefferson Lab, Room 256 - Joint Atomic Physics Colloquium, Prof. Deborah Jin - JILA & NIST: "Making Condensates with a Fermi Gas of Atoms"

Visitors

• Prof. Michael Crescimanno, Youngstown State University, February 9-20; March 22-April 2; April 26 - May 7
• Prof. Peter Drummond, University of Queensland, February 29 - March 2

March, 2004

Seminars

• March 3, Wednesday, 4:30 p.m., Jefferson Lab, Room 256 - Joint Atomic Physics Colloquium, Prof. Vladan Vuletic - MIT: "Collective Friction Forces due to Spatial Self-Organization of Atoms: From Rayleigh to Bragg Scattering"
• March 10, Wednesday, 4:30 p.m., Jefferson Lab, Room 256 - Joint Atomic Physics Colloquium, Prof. Gershon Kurizki - Weizmann Institute: "Dynamical control of entanglement and decoherence : from nano - to macro- systems"
• March 17, Wednesday, 4:30 p.m., Jefferson Lab, Room 256 - Joint Atomic Physics Colloquium, Prof. Jelena Vuckovic - Stanford: TBA

Visitors

• Prof. Peter Drummond, University of Queensland, until March 2
• Prof. Michael Crescimanno, Youngstown State University, March 22-April 2, April 26 - May 7
• Prof. Goran V. Shlyapnikov, FOM Institute AMOLF, March 26 - April 6; July 2-12

Workshops

April, 2004

Seminars

• April 7, Wednesday, 4:30 p.m., Jefferson Lab, Room 256 - Joint Atomic Physics Colloquium, Prof. G. V. Shlyapnikov - FOM Institute for Atomic and Molecular Physics: "Superfluid pairing in degenerate atomic Fermi gases"
• April 14, Wednesday, 4:30 p.m., Jefferson Lab, Room 256 - Joint Atomic Physics Colloquium, Dr. Irina Novikova - Center for Astrophysics "Dynamics of nonlinear Raman processes in atomic ensembles"
• April 21, Wednesday, 4:30 p.m., Jefferson Lab, Room 256 - Joint Atomic Physics Colloquium, Dr. Jack Harris - CUA: "Cold atoms without laser cooling: the frontier of buffer-gas cooling"
• April 26, Monday, 11:00 a.m., Classroom (A-101), AMP Seminar, G.L. Klimchitskaya and V.M. Mostepanenko, Universidade Federal da Paraiba-UFPB, Brazil: "Lifshitz theory of the van der Waals and Casimir forces and thermodynamics"
  

Visitors

• Dr. Girts Barinovs, Universiteit Leiden, April 19 - May 7
• Prof. Michael Crescimanno, Youngstown State University, until April 2; April 26 - May 7
• Prof. Shih-I Chu, University of Kansas, April
• Prof. Vladimir Mostepanenko, Universidade Federal da Paraiba-UFPB, Brazil, April-May
• Prof. Galina Klimchitskaya, Universidade Federal da Paraiba-UFPB, Brazil, April-May

May, 2004

Seminars

• Cancelled. May 12, Wednesday, 4:30 p.m., Jefferson Lab, Room 256 - Joint Atomic Physics Colloquium, Prof. Nick Bigelow - Univ. of Rochester: "Photoassociation of Mixed Atomic Species in a MOT"
• May 21, Friday, 2:00 p.m., Pratt Conference Room, AMP Seminar, J.F.Babb, G.L.Klimchitskaya, and V.M. Mostepanenko, ITAMP and Universidade Federal da paraiba-UFPB, Brazil: "Casimir-Polder interaction between an atom and a cavity wall under the influence of real conditions" [Abstract]

Visitors

• Prof. Michael Crescimanno, Youngstown State University, until May 7
• Dr. Girts Barinovs, Universiteit Leiden, until May 7
• Prof. Vladimir Mostepanenko, Universidade Federal da Paraiba-UFPB, Brazil, May
• Prof. Galina Klimchitskaya, Universidade Federal da Paraiba-UFPB, Brazil, May

Workshops

May 10-12, 2004, Mesoscopic Physics, Quantum Optics, and Quantum Information, organized by Charles Marcus (Harvard University) and Hossein Sadeghour (ITAMP)

June, 2004

Seminars

• June 21, 2004, Monday, 2:00 pm, Tea Room, AMP Seminar, Prof. Ronald J. Bieniek,
  Physics Department and LEAD Program, University of Missouri - Rolla: "Relaxation rates for vibrationally excited molecular hydrogen, 50-2000 K" [Abstract]

Visitors

• Prof. Maxim Olshanii, University of Southern California, June 8 - July 8
• Mr. Vanja Dunjko, University of Southern California, June 8 - July 8
• Mr. Alex Wiener, Tulane University, June 14 - August 27
• Prof. Bernard Zygelman, University of Nevada, Las Vegas, June 14 - 24 and August 1 - 15

Workshops

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July, 2004

Seminars

• July 7, Wednesday, 12:30 p.m., Pratt Conference Room, AMP Seminar, Mr. Adrian Daw, CfA, Appalachian State University: "Absolute Cross Section for Electron Impact Excitation of the C III 117.6 nm Multiplet" [Abstract]

Visitors

• Dr. Svetlana Malinovskaia, University of Michigan, July 1 -22
• Prof. Goran V. Shlyapnikov, FOM Institute AMOLF, July 2-12
• Dr. Robin Santra, JILA, University of Colorado, July 5-9
• Mr. Zoran Pavlovic, University of Connecticut, July 9 - August 30
• Prof. Phillip Stancil, University of Georgia, Athens, July 29 - August 6
• Prof. Maxim Olshanii, University of Southern California, until July 8
• Mr. Vanja Dunjko, University of Southern California, until July 8
• Mr. Alex Wiener, Tulane University, until August 27

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August, 2004

Seminars

• August 4, Wednesday, 12 noon, Phillips Auditorium, AMP Seminar, Dr. Michael J Jamieson, Department of Computing Science, University of Glasgow:  "The variable phase method used to calculate and correct scattering lengths" [Abstract]

Visitors

• Dr. Libo Zhao, University of Georgia, Athens, August 1 - 14
• Mr. Chih-Yuan Lin, University of Georgia, Athens, August 1-14
• Prof. Robert Forrey, Univ. of Pennsylvania, August 2-6
• Prof. Maxim Olshanii, Univ. of Southern California, August 7-25
• Dr. Guo-Xin Chen, Ohio State Univ., August 10-15
• Prof. Phillip Stancil, University of Georgia, Athens, until August 6
• Prof. Bernard Zygelman, University of Nevada, Las Vegas, August 1 - 15
• Prof. Maxim Olshanii, University of Southern California, Aug 7 - 25
• Mr. Alex Wiener, Tulane University, until August 27
• Mr. Zoran Pavlovic, University of Connecticut, until August 30

September, 2004

Seminars

• September 21, Tuesday, 10 a.m., Pratt Conference Room, AMP Seminar, Dr. Thomas Bartsch, Georgia Tech, Department of Physics, "Semiclassical atomic spectra in a mixed phase space"
• September 22, Wednesday, 4:30 p.m., Jefferson Lab, Room 256 - Joint Atomic Physics Colloquium, Prof. Nimrod Moiseyev - Technion, Israel: "Trapping, tunneling, and fragmentation of condensates in optical traps"

Visitors

• Prof. Nimrod Moiseyev, Technion--Israel Institute of Technology, September 20 - October 3

Workshops

October, 2004

Seminars

• October 8, Friday, 10 a.m., Pratt Conference Room, AMP Seminar, Dr. Robin Santra, ITAMP, Harvard-Smithsonian Center for Astrophysics: "Atoms and Clusters in Intense VUV Laser Fields"
• October 13, Wednesday, 4:30 p.m., Jefferson Lab, Room 256 - Joint Atomic Physics Colloquium, Dr. Evgeny Shapiro - NRC, Canada: "Processing quantum information in molecular wavepackets"
• October 15, Friday, 10 a.m., Pratt Conference Room, AMP Seminar, Prof. David Williams, University College London: "Gas - surface interactions in star-forming regions" [Abstract]
• October 29, Friday, 10 a.m., Pratt Conference Room, AMP Seminar, Prof. Alexei A. Buchachenko, Laboratory of Quantum Mechanics and Molecular Structure,
  Moscow State University, "Collision-induced non-adiabatic transitions in the ion-pair states of iodine molecule" [Abstract]
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Visitors

• Dr. Evgeny Shapiro, Femtosecond Program, NRC, Canada, October 1-31
• Prof. Andrey K. Belyaev, A.I. Herzen University of Russia, October 1 - November 30
• Dr. Gerrit C. Groenenboom, University of Nijmegen, October 4 - 22
• Prof. David Williams, University College London, October 9 - 16
• Dr. Alexei Buchachenko, Moscow State University, October 14 - November 11
• Prof. Janne Ruostekoski, University of Hertfordshire, October 20 - December 17
• Prof. Nimrod Moiseyev, Technion--Israel Institute of Technology, September 20 - October 3

Workshop

October 4-6, 2004, Quantum Degenerate Gases in Low-Dimensionality, organized by Brett Esry (Kansas State), Maxim Olshanii (USC), Joerg Schmiedmayer (U. Heidelberg)

November, 2004

Seminars

• November 3, Wednesday, 4:30 p.m., Jefferson Lab, Room 256 - Joint Atomic Physics Colloquium, Prof. Thomas Brabec, University of Ottawa: "Few/many body quantum and classical dynamics in strong laser fields"
• November 17, Wednesday, 4:30 p.m., Jefferson Lab, Room 256 - Joint Atomic Physics Colloquium, Prof. Mark Raizen - University of Texas, Austin: "Development of a Quantum Tweezer for Atoms"
  

Visitors

• Dr. Svetlana Kotochigova, NIST, November 18-20
• Dr. Eddy Timmermans, Lawrence Livermore National Lab, Nov. 29 - Dec 10
• Dr. Alexei Buchachenko, Moscow State University, until November 11
• Prof. Andrey K. Belyaev, A.I. Herzen University of Russia, until November 30
• Prof. Janne Ruostekoski, University of Hertfordshire, until December 17

Workshop

November 15-17, 2004, X-ray Diagnostics for Astrophysical Plasmas: Theory, Experiment, (Joint workshop sponsored by ITAMP, the CXC, the Con-X mission, and the Astro-E2 mission at NASA/Goddard) Scientific Organizing Committee: Randall Smith (NASA/GSFC and JHU), Jay Bookbinder (CfA), Nancy Brickhouse (CfA), Jelle Kaastra (SRON), Tim Kallman (NASA/GSFC), Kate Kirby (CfA), Duane Liedahl (LLNL), John Raymond (CfA), Claude Canizares, (MIT)

December, 2004

Seminars

• December 1, Wednesday, 4:30 p.m., Jefferson Lab, Room 256 - Joint Atomic Physics Colloquium, Prof. Eddy Timmermans, Los Alamos National Lab: Mixing Quantum Gases to Achieve the Potion of Everlasting Current: Cold Atom Alchemy
• December 15, Wednesday, 4:30 p.m., Jefferson Lab, Room 256 - Joint Atomic Physics Colloquium, Prof. Nick Bigelow, University of Rochester: Vorticies in a BEC: From Lattices to Atomic-molecutlar Mixtures

Visitors

• Prof. Thomas W. Gorczyca, Western Michigan Univ, December 13 - January 31, 2005
• Dr. Eddy Timmermans, Lawrence Livermore National Lab, until December 10
• Prof. Janne Ruostekoski, University of Hertfordshire, until December 17

Lifshitz theory of the van der Waals and Casimir forces G.L. Klimchitskaya and V.M. Mostepanenko Universidade Federal da Paraiba-UFPB, Brazil Monday, April 26, 2004 11:00, Classroom (A-101) Harvard-Smithsonian Center for Astrophysics The thermal Casimir force between real metals of finite conductivityis considered on the basis of the Lifshitz theory. The contradictions with the Nernst heat theorem arising when one substitutes the Drude model dielectric function into the Lifshitz formula are discussed. The reason for these contradictions is linked to the fact that the Drude dielectric function implies the energy transfer from the electromagnetic field to the phonons of lattice. We demonstrate that the Lifshitz formula expressed in terms of the surface impedance is free of contradictions and lays a reliable theoretical framework for the investigation of the thermal Casimir force. Recent precision measurements of the Casimir force by means of the microelectromechanical torsional oscillator are discussed bringing the experimental confirmation to the surface-impedance approach.

Casimir-Polder interaction between an atom and a cavity wall under the influence of real conditions J.F.Babb, G.L.Klimchitskaya, and V.M. Mostepanenko ITAMP and Universidade Federal da Paraiba-UFPB, Brazil Friday, May 21, 2004 2:00 pm, Pratt Conference Room Harvard-Smithsonian Center for Astrophysics Abstract: The Casimir-Polder interaction between an atom and a metal wall is investigated under the influence of real conditions including the dynamic polarizability of an atom, finite conductivity of a wall metal and nonzero temperature. Both analytical and numerical results for the free energy and force are obtained withing a wide separation range. Numerical computations are performed for Au wall and metastable He*, Na and Cs atoms. On the example of He* atom, we demonstrate that at short separations of about Au plasma wavelength at room temperature the free energy deviates up to 35% and force up to 57% from the classical Casimir-Polder result. So large deviations should be taken into account in precision experiments on atom-wall interaction. The combined account of different corrections to the Casimir-Polder interaction leads to the conclusion that at short separations the corrections due to the dynamic polarizability of an atom play a more important role than the corrections due to nonideality of a wall metal and leads to the suppression of the latter ones. By the comparison of the exact atomic polarizabilities with those in the framework of the single oscillator model, it is shown that the obtained asymptotic expressions give the possibility to calculate the free energy and force for atom-wall interaction under real conditions with a precision of one percent.

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Relaxation rates for vibrationally excited molecular hydrogen, 50-2000 K Ronald J. Bieniek Physics Department and LEAD Program University of Missouri - Rolla Monday, June 21, 2004 2:00 pm, Tea Room Harvard-Smithsonian Center for Astrophysics Abstract: A quantum mechanical "breathing sphere" approach to molecular collisions that changes vibrational-translational states yields a simple analytic expression for thermally averaged relaxation rates that accurately models relaxation rates for OH(v), NO(v), and N2(v) over a range of vibrational excitations. Although H2 should be the worst molecule for the breathing-sphere approximation because of its large rotational-energy spacing, the rates predicted by the analytic expression for H2(v=1)+H2 -> H2(v=0)+H2 for temperatures 50-2000 K are in very good agreement with experimental values and more complicated theoretical computations. As in the N2 case, the predicted temperature dependence successfully follows the five-orders-of-magnitude change in relaxation rate with temperature. Rates for v=2 and v=3 initial excitations will also be discussed.

Absolute Cross Section for Electron Impact Excitation of the C III 117.6 nm Multiplet Mr. Adrian Daw CfA, Appalachian State University Wednesday, July 7, 2004 12:30 pm, Pratt Conference Room Harvard-Smithsonian Center for Astrophysics We report the latest results from Ion Beam Experiment at the CfA: We have measured the cross section for Electron Impact Excitation (EIE) of C III 117.6 nm for energies below threshold to 17 eV above. Using the unique capabilities of the inclined-beams with photon-detection technique, this work provides the first measurement of the EIE cross section for C III 117.6 nm that covers the energy range required to determine rate coefficients for density diagnostics of the Sun, cool stars, CV binaries and planetary nebulae. This is the first result with the new 5 GHz electron-cyclotron-resonance ion source, which produces useful currents ( >30 nA) of charge states up to 5+. Following the final radiometric calibration, rate coefficients from this work will have an uncertainty of 10% or less.

The variable phase method used to calculate and correct scattering lengths Michael J Jamieson Department of Computing Science University of Glasgow Wednesday, August 4, 2004 12:00 pm, Phillips Auditorium Harvard-Smithsonian Center for Astrophysics Abstract: I will show how the scattering length can be obtained from the equation satisfied by the phase in variable phase theory and how the variable phase equation can be used to predict upper and lower bounds for the long range correction to the scattering length. I will describe a numerical example.

Gas - surface interactions in star-forming regions David Williams University College London Friday, 15 October 2004 10:00 am, Pratt Conference Room Harvard-Smithsonian Center for Astrophysics Abstract: In denser regions of interstellar space, such as those in star-forming regions, the interactions between gas atoms and molecules with dust grain surfaces become more significant. An example of this is the growth of ice coatings on dust grains by the hydrogenation of oxygen atoms on surfaces in regions above a certain critical visual extinction. Surface processes may in some circumstances dominate gas-phase processes. There is a need for reliable information on adsorption, desorption, reaction, and also on the solid-state processing of amorphous ices. In my talk I shall describe recent studies of situations in which the gas-surface interactions are likely to be important. These may include hot cores in regions of massive star formation, clumpy models of molecular clouds in regions of low mass star formation, and the interaction of stellar jets with dense cores within clumpy clouds.

Collision-induced non-adiabatic transitions in the ion-pair states of iodine molecule Alexei A. Buchachenko Laboratory of Quantum Mechanics and Molecular Structure Moscow State University Friday, 29 October 2004 10:00 am, Pratt Conference Room Harvard-Smithsonian Center for Astrophysics Abstract: Ion-pair electronic states of the iodine molecule lie above the manifold of the valence electronic states and form clusters, or tiers, of closely spaced strongly bound potential energy curves. Collisions of iodine molecules excited to the ion-pair states with rare gas atoms or molecular partners provide an interesting model for understanding the propensities of non-adibatic electronic energy transfer with respect to the symmetry of the electronic states involved, energy gap and Franck-Condon factor between initial and final rovibronic levels. The results of the quantum scattering calculations of the cross sections and rate constants for the non-adiabatic transitions will be discussed and an overview of experimental studies will be given.

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