caa a22 4500 44586799X CHVBK 20180317145503.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1140/epjd/e2010-10531-2 doi (NATIONALLICENCE)springer-10.1140/epjd/e2010-10531-2 Index of refraction for cold lithium- and diatomic sodium waves traveling through cold noble gases [Elektronische Daten] [H. Bjørgen, M. Lysebo, L. Veseth] Abstract.: In the present paper we propose to measure the index of refraction for diatomic sodium molecules traveling through a cold helium gas. Theoretical calculations of the index of refraction for this system are presented as a function of the molecule velocity and atom gas temperature. Whereas previous theoretical efforts to compute the refractive index have been concerned with atomic systems and atomic matter waves, we extend the investigation to diatomic molecules in the present work. To enable such calculations the potential energy surface for the atom-molecule interaction is calculated abinitio, along with the long range dispersion coefficients for the atom-molecule system. The full close-coupled equations, describing the atom-molecule collisions, are solved numerically to work out the influence of the collisions on the matter waves. We investigate the sensitivity of the results upon changes and inaccuracies in the potential energy surface. Several molecular rotational levels are included in the present study, and the index of refraction is found to depend on the rotational state. In addition, the index of refraction for atomic lithium matter waves traveling through the cold noble gases helium and argon are computed, motivated by a recent experiment with atomic lithium matter waves. Different resonances (glory- and scattering resonances) are identified from the results. Such resonances offer an important opportunity for the comparison of experiment and theory. EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2011 Bjørgen H. Department of Physics, University of Oslo, 0316, Oslo, Norway aut Lysebo M. Faculty of Engineering, Oslo University College, 0130, Oslo, Norway aut Veseth L. Department of Physics, University of Oslo, 0316, Oslo, Norway aut The European Physical Journal D Springer-Verlag 61/3(2011-02-01), 593-608 1434-6060 61:3<593 2011 61 10053 https://doi.org/10.1140/epjd/e2010-10531-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epjd/e2010-10531-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bjørgen H. Department of Physics, University of Oslo, 0316, Oslo, Norway aut NATIONALLICENCE 700 1- Lysebo M. Faculty of Engineering, Oslo University College, 0130, Oslo, Norway aut NATIONALLICENCE 700 1- Veseth L. Department of Physics, University of Oslo, 0316, Oslo, Norway aut NATIONALLICENCE 773 0- The European Physical Journal D Springer-Verlag 61/3(2011-02-01), 593-608 1434-6060 61:3<593 2011 61 10053 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer