D. Table, 1: Data of KAr potentials as determined in this work

]. N. Bibliography-[-all82, J. Allard, and . Kielkopf, Effect of collisions on atomic spectral lines, Rev. Mod. Phys, vol.54, p.1103, 1982.

]. M. And95, J. Anderson, M. Ensher, C. Matthews, E. Wienman et al., Observation of Bose-Einstein Condensation in a Dilute Atomic Vapor, Science, vol.269, 0198.

]. M. [-ale02, G. Alexander, H. Capecchi, and . Werner, Theoretical Study of the Validity of the Born-Oppenheimer Approximation in the Cl + H 2 reaction, Science, vol.296, p.715, 2002.

]. E. Ari77, M. Arimondo, P. Inguscio, and . Violino, Experimental determination of the hyperfine structure in the alkali atoms, Rev. Mod. Phys, pp.49-80, 1977.

]. C. Aus03 and . Aussibal, Réalisation d'un condensat de Bose-Einstein sur une microstructure, 2003.

]. W. Beh96, A. Behmenburg, A. Makonnen, F. Kaiser, V. Rebentrost et al., Optical transitions in excited alkali + rare-gas collision molecules and related interatomic potentials: Li * + He, 3891. [Bic00] E. N. Bichutskaya, A. Z. Devdariani, and A. L. Zagrebin, Quasi-Molecular Emission and Nonadiabatic transitions: II. Ca, p.163, 1996.

]. F. Bok96, D. Bokelmann, and . Zimmermann, Determination of the K-Ar interaction potential in the X? and A? state from laser spectroscopic data, J. Chem. Phys, vol.104, p.923, 1996.

G. Gmbh, C. A. Bradlay, J. J. Sackett, R. G. Tollet, and . Hulet, Evidence of Bose-Einstein condensation in an atomic gas with attractive interactions, Phys. Rev. Lett, pp.75-1687, 1994.

]. M. Brau02 and . Braune, Optisch-optische Doppelresonanzexperimente an Kalium-Argon und Bestimmung der adiabatischen Potentiale sowie der Spin-Bahn-Funktion im B 2 ? -A 2 ?-System, 2002.

]. R. Bru91, J. Bruehl, D. Kapetanakis, and . Zimmermann, Determination of the Na- Kr interaction potential in the X-Sigma and A-Pi state by laser spectroscopy, J. Chem. Phys, pp.94-5865, 1991.

K. Burnettcass00, ]. D. Cassettari, B. Hessmo, R. Folman, T. Maier et al., Collisional redistribution of radiation, Phys. Rep. Beam Splitter for Guided Atoms Phys. Rev. Lett, vol.118, issue.339, pp.85-5483, 1985.

Y. Castin, Bose-Einstein condensates in atomic gases: simple theoretical results, Coherent atomic matter waves, 2001.

]. M. Chi74 and . Child, Molecular Collision Theory, 1974.

]. M. Chi91 and . Child, Semiclassical Mechanics with Molecular Applications, International series of monographs on chemistry, 1991.

]. C. Coh92, J. Cohen-tannoudji, G. Dupont-roc, and . Grynberg, Atom-Photon Interactions, 1992.

]. C. Coh98 and . Cohen-tannoudji, Manipulating atoms with photons, Rev. Mod. Phys, vol.70, p.707, 1998.

]. E. Cor99, J. R. Cornell, C. E. Ensher, and . Wieman, Experiments in dilute atomic Bose-Einstein condensation, Proceedings of the International School of Physics " Enrico Fermi, Course CXL, Bose-Einstein Condensation in Atomic Gases (M. Inguscio, S. Stringari, and C. E. Wieman Societa Italiana di Fisica, 1999.

]. J. Cou87, S. K. Coutts, R. Peck, and . Stoner, Effect of collisions on forbidden lines, J. Appl. Phys, pp.62-3514, 1987.

]. J. Cou88, S. K. Coutts, J. Peck, and . Cooper, Collisional-induced absorption in calcium rare-gas collisions, J. Appl. Phys, vol.64, p.977, 1988.

]. J. Cra93, M. J. Crane, R. W. Shaw, and . Presta, Measurement of the cross sections for collisional broadening of the intercombination transition in calcium and strontium, Phys. Rev. A, vol.49, p.1666, 1993.

]. E. Czu89, F. Czuchaj, H. Rebentrost, H. Stoll, and . Preuss, Semi-local pseudopotential calculations for the potential energies of the CaHe and CaHe systems, Chem. Phys, pp.138-303, 1989.

]. E. Czu91, F. Czuchaj, H. Rebentrost, H. Stoll, and . Preuss, Pseudopotential SCF/CI calculation for the potential energy curves of the CaHe pair, Chem. Phys. Lett, pp.182-191, 1991.

]. E. Czu03, M. Czuchaj, H. Krosnicki, and . Stoll, Valence ab initio calculation of the potential energy curves for ca-rare gas van der waals molecules, Chem. Phys, vol.292, pp.101-110, 2003.

]. F. Dal99, S. Dalfovo, L. P. Giorgini, S. Pitaevskii, and . Stringari, Theory of Bose- Einstein condensation in trapped gases, Rev. Mod. Phys, pp.71-463, 1999.

]. K. Dav95, M. Davis, M. R. Mewes, N. J. Andrews, D. S. Van-druten et al., -Einstein condensation in a gas of sodium atoms, Phys. Rev. Lett, pp.75-3969, 1995.

]. J. Den99, D. Denschlag, J. Cassettari, and . Schmiedmayer, Guiding Neutral Atoms with a Wire, Phys. Rev. Lett, vol.82, p.2014, 1999.

]. A. Dev86, A. L. Devdariani, and . Zagrebin, Spin-changing collisions in the Ca(4s5p 1 P 1 )+He system, Chem. Phys. Lett, pp.131-197, 1986.

]. A. Dev97, E. Devdariani, E. I. Tchescnokov, E. E. Dashevskaya, and . Nikitin, Quasiclassical study of differential inelastic scattering of oriented Ca(4s5p, 1 P 1 ) atoms on he, Phys. Rev. A, vol.57, p.4472, 1997.

]. R. Dür82, E. Düren, G. Hasselbrink, and . Moritz, On the Interaction of Excited Alkali Atoms with Rare Gas Targets in Scattering Processes, Bose- Einstein Condensation in a Dilute Gas: Measurement of Energy and Ground-State Occupation, pp.77-4984, 1982.

J. Esteve, C. Aussibal, T. Schumm, C. Figl, D. Mailly et al., Aspect The role of wire imperfections in micro magnetic traps for atoms, J. Phys. A, submitted, 2004.

]. C. Fig02, A. Figl, R. Grimpe, J. Goldstein, O. Grosser et al., Direct Observation of Atom-Molecule Collisions by Optical Excitation, Russ, J. Phys. Chem, vol.76, p.90, 2002.

]. C. Fig03, J. Figl, O. Grosser, F. Hoffmann, and . Rebentrost, Differential scattering study of asymptotically forbidden optical transitions in CaAr collisions, Chem. Phys. Lett, pp.380-196, 2003.

]. R. Fol00, P. Folman, D. Krüger, B. Casserati, T. Hessmo et al., Controlling Cold Atoms using Nanofabricated Surfaces: Atom Chips, Phys. Rev. Lett, vol.84, p.4749, 2000.

]. J. For98, A. Fortágh, C. Grossmann, and . Zimmermann, Miniaturized Wire Trap for Neutral Atoms, Phys. Rev. Lett, pp.81-5310, 1998.

]. J. For02, H. Fortágh, S. Ott, A. Kraft, C. Günther et al., Surface effects in magnetic microtraps, Phys. Rev. A, vol.66, p.41604, 2002.

]. R. Gol04 and . Goldstein, Untersuchung von Stoßprozessen mittels Laseranregung: Optische Stöße mit molekularen Targets und optische Stöße mit Femtosekundenlaserpulsen, 2004.

]. M. Gon94, M. A. Gondal, M. H. Khan, and . Rais, Laser-Enhanced Ionization Studies of the Blue Satellite Band in the Ca-Ar System Associated with the Electric- Quadrupole Transition 4s 2 1 S 0 ?, p.9, 1994.

]. J. Gro94, D. Grosser, A. Gundelfinger, W. Maetzing, and . Behmenburg, Laser-assisted collisions: investigation of the optical collision process Na(3s)+Kr+h? ?Na(3p)+Kr in a crossed beam experiment Differential cross sections for radiation assisted collisions between atoms, J. Phys. B J. Phys. B, vol.27, issue.29, p.299, 1994.

]. J. Gro97a, O. Grosser, S. Hoffmann, F. Klose, and . Rebentrost, Optical excitation of collision pairs in crossed beams: Determination of the NaKr B 2 ? potential, Europhys . Lett, pp.392-147, 1997.

]. J. Gro97b, O. Grosser, C. Hoffmann, F. Rakete, and . Rebentrost, Direct Observation of the Geometry of Atom-Atom and Atom-Molecule Collisions, J. Phys. Chem. A, vol.101, p.7627, 1997.

]. J. Gro99a, O. Grosser, F. Hoffmann, and . Rebentrost, Direct observation of collisions by laser excitation of the collision pair, 117. [Gro99b] J. Grosser, O. Hoffmann, and F. Schulze-Wischeler, Direct observation of nonadiabatic transitions in Na+rare-gas differential optical collisions, p.2853, 1999.

]. J. Gro00, O. Grosser, F. Hoffmann, and . Rebentrost, Accurate probing of the repulsive X 2 ? and B 2 ? potentials of NaNe and NaAr by differential optical collision experiments, J. Phys. B, vol.33, p.577, 2000.

]. M. Hav86, F. T. Havey, L. L. Delahanty, G. E. Vahala, and . Copeland, Experimental fine-structure branching ratios for Na-rare-gas optical collisions, Phys. Rev. A, vol.34, p.2758, 1986.

]. R. Hed72, D. L. Hedges, A. Drummond, and . Gallagher, Extreme-Wing Line Broadening and Cs-Inert-Gas Potentials, Phys. Rev. A, vol.6, p.1519, 1972.

]. O. Hof99 and . Hoffmann, Direkte Beobachtung von atomaren und molekularen Stoßpaaren, 1999.

]. D. Hoh95 and . Hohmeier, Untersuchung der photoninduzierten Stoßanregung in gekreuzten Atomstrahlen mit differentiellem Nachweis, 1995.

]. J. Jav86 and . Javanainen, Oscillatory Exchange of Atoms between Traps Containing Bose Condensates, Phys. Rev. Lett, vol.57, p.3164, 1986.

]. M. Jon03, C. J. Jones, D. Vale, B. V. Sahagun, C. C. Hall et al., Cold atoms probe the magnetic field near a wire, p.308434, 2003.

]. B. Jos62 and . Josephson, Possible new effects in superconductive tunneling, Phys. Lett, vol.1, p.251, 1962.

]. J. Kau97a, W. H. Kaup, and . Breckenridge, Spectroscopic characterization of the metastable (4p? 2 ? 0 ? ) valence states and the 5s 3 ? + Rydberg states of the CaAr, CaKr and CaXe van der Waals molecules, J. Chem. Phys, vol.107, p.5283, 1997.

]. J. Kau97b, W. H. Kaup, and . Breckenridge, Spectroscopic characterization of the singly excited CaAr, CaAr(4d? 3 ? 1 ) states and the doubly excited CaAr (4p?4p? 3 ? ? ) state, p.5676, 1997.

]. W. Ket92, D. E. Ketterle, and . Pritchard, Trapping and Focusing Ground State Atoms with Static Fields, Appl. Phys. B, vol.54, p.403, 1992.

]. W. Ket96, N. J. Ketterle, and . Van-druten, Evaporative cooling of trapped atoms, Adv. At. Mol. Opt. Phys, vol.37, p.181, 1996.

]. W. Ket99, S. S. Ketterle, D. M. Durfee, and . Stamper-kurn, Making, probing and understanding Bose-Einstein condensates, Proceedings of the International School of Physics " Enrico Fermi, Course CXL, Bose-Einstein Condensation in Atomic Gases (M. Inguscio, S. Stringari, and C. E. Wieman Societa Italiana di Fisica, 1999.

]. M. Key00, I. G. Key, W. Hughes, B. E. Rooijakkers, E. A. Sauer et al., Propagation of Cold Atoms along a Miniature Magnetic Guide, Phys. Rev. Lett, vol.84, p.1371, 2000.

]. M. Kha96, R. A. Khan, and M. A. Qureshi, Ar-supported atomic population transfer from the 3d4p 1 D 2 to nearby states of Ca, Chem. Phys. Lett, vol.264, p.273, 1996.

]. P. Kle86, K. Kleiber, and . Sando, Laser-absorption profiles of the calcium ? rare-gas (4s 1 ? + ? 5s 1 ? + ) molecular bands, Phys. Rev. A, vol.35, p.3715, 1986.

]. P. Kle88, A. Kleiber, K. Fletscher, and . Sando, Laser-absorption profiles of the magnesium-rare-gas (3s-4s) molecular bands, 3584. [Klo96] S. Klose, Messung differentieller Wirkungsquerschnitte laserunterstützter Stoßprozesse, 1988.

]. S. Kra02, A. Kraft, H. Günther, D. Ott, C. Wharam et al., Anomalous longitudinal magnetic field near the surface of copper conductors, J. Phys. B, vol.35, p.469, 2002.

]. A. Lea02, A. P. Leanhardt, D. Chikkatur, Y. Kielpinski, T. L. Shin et al., Propagation of Bose-Einstein Condensates in a Magnetic Waveguide, Phys. Rev. Lett, pp.89-040401, 2002.

]. C. Lee91, M. D. Lee, R. P. Havey, and . Meyer, Laser spectroscopy of molecular LiHe: The 3d 2 ? ? 2p 2 ? transition, Phys. Rev. A, vol.43, p.77, 1991.

]. P. Let88, R. N. Lett, C. I. Watts, W. D. Westbrook, and . Phillips, Observation of Atoms Laser Cooled below the Doppler Limit Spectroscopic characterization of the weakly bound Ca(4s4d? 3 D 3 )·Ar[ 3 ? + ] state: Evidence for a substantial maximum in the potential curve at long range, Phys. Rev. Lett. J. Chem. Phys, vol.61, issue.111, p.2484, 1988.

]. A. Leu99, J. G. Leung, D. Kaup, J. G. Bellert, and . Mccaffrey, Spectroscopic characterization of excited Ca): No " heavy -atom " mixing of RG(nd? ) character into the wave functions, ) RG ( 3 ? 1,2 ) states (RG = Ar, p.981, 1999.

]. G. Lin01, H. Lindenblatt, W. Wenz, and . Behmenburg, Study of excitation transfer Li(3D ? 3P) occuring in optical collisions with rare gas atoms experimentally, Euro. Phys. J. D, vol.13, p.329, 2001.

]. J. Lye02, C. S. Lye, U. Fletcher, H. Kallmann, J. D. Bachor et al., Images of evaporative cooling to Bose-Einstein condensation, 57. [Mae94] A. Maetzing, Eine neue Methode zur Untersuchung von Stoßprozessen: Optische Stöße in gekreuzten Atomstrahlen Binary Alloy Phase Diagrams, 1990.

]. M. Mat95 and . Mattiesen, Entwicklung eines Detektors für Natrium-Atome in Rydbergzuständen, 1995.

]. F. Mei02, W. Meier, and . Zwerger, Josephson tunneling between weakly interacting Bose- Einstein condensates, Phys. Rev. A, vol.64, p.33610, 2002.

]. J. Mes82, J. Mestdagh, J. Berlande, P. Cuvellier, A. De-pujo et al., Finestructure transitions in K(4P) induced by rare gases and diatomic molecules, J. Phys. B, vol.15, p.439, 1982.

]. A. Nes63 and . Nesmeyanov, Vapor pressure of the chemical elements, Nik84] E. E. Nikitin and S. Ya. Umanskii, Theory of Slow Atomic Collisions, 1963.

]. H. Ott01, J. Ott, G. Fortágh, A. Schlotterbeck, C. Grossmann et al., Bose-Einstein Condensation in a Surface Microtrap, Bose-Einstein Condensation in a Surface Microtrap, p.230401, 2001.
DOI : 10.1103/PhysRevLett.87.230401

]. J. Pas74, J. Pascale, and . Vandeplanque, Excited molecular terms of the alkali-rare gas atom pairs, J. Chem. Phys, pp.60-2278, 1974.

]. J. Pas84, J. Pascale, J. Mestdagh, P. Cuvellier, and . De-pujo, Test of interatomic potentials and study of coupling mechanisms involved in fine-structure transitions for K(4 2 P)+Ar collisions, J. Phys. B, vol.17, p.2627, 1984.

]. W. Pre86, B. P. Press, S. A. Flannery, W. T. Teukosky, . L. Vetterlingraa87-]-e et al., Numerical recipes. The Art of Scientific Computing Trapping of Neutral Sodium Atoms with Radiation Pressure, 2631. [Rad85] A. A. Radzig and B. M. Smirnov, Reference Data on Atoms, Molecules, and Ions, 1985.

]. F. Reb98, S. Rebentrost, J. Klose, and . Grosser, Quantum and semiclassical dynamics of differential optical collisions, Euro. Phys. J. D, vol.1, p.277, 1998.

]. J. [-rei99, W. Reichel, T. W. Hänsel, and . Hänsch, Atomic Micromanipulation with Magnetic Surface Traps, Phys. Rev. Lett, vol.83, p.3398, 1999.

]. J. [-rei01, W. Reichel, P. Hänsel, T. W. Hommelhoff, and . Hänsch, Applications of integrated magnetic microtraps, Appl. Phys. B, vol.72, p.81, 2001.

]. C. Sac97, C. C. Sackett, R. G. Bradley, and . Hulet, Optimization of evaporative cooling, Phys. Rev. A, vol.55, p.3797, 1997.

B. Sayer, M. Ferray, J. P. Visticot, and J. , Lozingot Experimental investigation of the Cs )? rare-gas interaction: potential curves and oscillator strength of the dipole-induced transitions, J. Phys. B, vol.52, issue.13, p.177, 1980.

S. Schneider, A. Kasper, C. Vom-hagen, M. Bartenstein, B. Engeser et al., Bose-Einstein condensation in a simple microtrap, Physical Review A, vol.67, issue.2, p.23612, 2003.
DOI : 10.1103/PhysRevA.67.023612

W. Pritchard and . Ketterle, Distillation of Bose-Einstein condensates in a doublewell potential, 2003.

]. F. Spi02, L. Spiegelman, ]. K. Maronued89, T. Ueda, Y. Komatsu et al., Two-electron pseudopotential investigation of the electronic structure of the CaAr molecule Observation of collision-induced-diploe absorption bands in strontium-rare-gas mixtures. 5s-4d bands, J. Chem. Phys. J. Chem. Phys, vol.117, issue.7534, pp.91-4495, 1989.

]. C. Vad01, V. Vadla, K. Horvatic, and . Niemax, Oscillator strength of the strongly " forbidden

]. Wan03, M. D. Wang, E. Lukin, and . Demler, Disordered Bose-Einstein Condensates in Quasi One-Dimensional Magnetic Microtraps, Weh95] O. Wehrhahn, Untersuchung optischer Stöße in gekreuzten Atomstrahlen, Diplomarbeit, 1995.

]. D. Zim99, M. Zimmermann, D. Braune, and . Schwarzhans, Recent Progress in the Determination of Interatomic Potentials of Alkali-Argon Systems, AIP Conf. Proc. 10, p.395, 1999.

T. Schmidt, C. Figl, A. Grimpe, J. Grosser, O. Hoffmann et al., Coherent control of atomic collisions using elliptic polarization, Phys. Rev. Lett, pp.92-033201, 2004.

C. Figl, R. Goldstein, J. Grosser, O. Hoffmann, and F. Rebentrost, Observation of elementary nonadiabatic processes in atom -atom and atom -molecule collisions, Khimizheskaya Fizika, vol.23, pp.24-28, 2004.

C. Figl, J. Grosser, O. Hoffmann, and F. Rebentrost, Differential scattering study of asymptotically forbidden optical transitions in CaAr collisions, Chemical Physics Letters, vol.380, issue.1-2, pp.380-196, 2003.
DOI : 10.1016/j.cplett.2003.07.032

C. Figl, A. Grimpe, R. Goldstein, J. Grosser, O. Hoffmann et al., Direct Observation of Atom-Molecule Collisions by Optical Excitation, Russ, J. Phys. Chem, vol.76, p.90, 2002.

C. Figl, J. Grosser, O. Hoffmann, and F. Rebentrost, Repulsive KAr potentials from differential optical collisions, Journal of Physics B: Atomic, Molecular and Optical Physics, vol.37, issue.16, 2004.
DOI : 10.1088/0953-4075/37/16/012

J. Esteve, C. Aussibal, T. Schumm, C. Figl, D. Mailly et al., Aspect The role of wire imperfections in micro magnetic traps for atoms, J. Phys. A, submitted, 2004.