aqora

Scattering- and Binding Properties of Two 133Cs Atoms in Free Space and in an Ultracold, Low-Dense 133Cs Vapor

H. B. Ghassib, Ahmad M. Alkurdi, Ayman S. Sandouqa

Journal of Low Temperature PhysicsJul 21, 20230 citations

Interferometric measurement of ultracold collision properties using an atom collider

A. C. Wilson, Niels Kjærgaard, Angela S. Mellish

Conference on Lasers and Electro-OpticsJan 1, 20050 citations

Atomic Collisions in Ultracold Atomic Gases

Paul S. Julienne, Kevin C. Jones, Paul D. Lett +4 more

Jul 1, 19970 citations

A versatile apparatus for simultaneous trapping of multiple species of ultracold atoms and ions to enable studies of low energy collisions and cold chemistry

Bubai Rahaman, Satyabrata Baidya, Sourav Dutta

We describe an apparatus where many species of ultracold atoms can be simultaneously trapped and overlapped with many species of ions in a Paul trap. Several design innovations are made to increase the versatility of the apparatus while keeping the size and cost reasonable. We demonstrate the operation of a three-dimensional (3D) magneto-optical trap (MOT) of 7Li using a single external cavity diode laser. The 7Li MOT is loaded from an atomic beam, with atoms slowed using a Zeeman slower designed to work simultaneously for Li and Sr. The operation of a 3D MOT of 133Cs, loaded from a 2D MOT, is demonstrated, and provisions for MOTs of Rb and K in the same vacuum manifold exist. We demonstrate the trapping of 7Li+ and 133Cs+ at different settings of the Paul trap and their detection using an integrated time-of-flight mass spectrometer. We present results on low energy neutral-neutral collisions (133Cs-133Cs, 7Li-7Li, and 133Cs-7Li collisions) and charge-neutral collisions (133Cs+-133Cs and 7Li+-7Li collisions). We show evidence of sympathetic cooling of 7Li+ (133Cs+) due to collisions with the ultracold 7Li (133Cs).We describe an apparatus where many species of ultracold atoms can be simultaneously trapped and overlapped with many species of ions in a Paul trap. Several design innovations are made to increase the versatility of the apparatus while keeping the size and cost reasonable. We demonstrate the operation of a three-dimensional (3D) magneto-optical trap (MOT) of 7Li using a single external cavity diode laser. The 7Li MOT is loaded from an atomic beam, with atoms slowed using a Zeeman slower designed to work simultaneously for Li and Sr. The operation of a 3D MOT of 133Cs, loaded from a 2D MOT, is demonstrated, and provisions for MOTs of Rb and K in the same vacuum manifold exist. We demonstrate the trapping of 7Li+ and 133Cs+ at different settings of the Paul trap and their detection using an integrated time-of-flight mass spectrometer. We present results on low energy neutral-neutral collisions (133Cs-133Cs, 7Li-7Li, and 133Cs-7Li collisions) and charge-neutral collisions (133Cs+-133Cs and 7Li+-7Li collisions). We show evidence of sympathetic cooling of 7Li+ (133Cs+) due to collisions with the ultracold 7Li (133Cs).

arXiv:2401.11233The Journal of Chemical PhysicsFeb 13, 20241 citation

Theory of atomic collisions at ultracold temperatures

Paul S. Julienne, Robert Heather, J. Vigué

AIP conference proceedingsJan 1, 19911 citation

Magnetic Trapping of an Ultracold 87 Rb - 133 Cs Atomic Mixture

Patrick Tierney

This thesis reports on the realisation and characterisation of a magnetically trapped ultracold atomic mixture of 87Rb and 133Cs in the F = 1, mF = −1 and F = 3, mF = −3 hyperfine states respectively. A compact two-species double magneto-optical trapping (MOT) apparatus is constructed in which a pyramid MOT acts to provide an independent flux of both atomic species for capture in the ultra-high vacuum science region of the apparatus. For the two-species science MOT in which this atom flux is captured, interspecies light assisted inelastic collisions are found to be a highly significant loss mechanism. A novel optical pressure spatial displacement technique is developed to minimise such losses, allowing near independent simultaneous loading of up to ' 8 × 108 87Rb and ' 3 × 108 133Cs atoms into an Ioffe-Pritchard ‘baseball ’ magnetic trap at magnetic bias fields of 166.70(6) and 165.50(6) G respectively. At the loaded 87Rb and 133Cs atom number densities of 1.78(6) × 109 andThis thesis reports on the realisation and characterisation of a magnetically trapped ultracold atomic mixture of 87Rb and 133Cs in the F = 1, mF = −1 and F = 3, mF = −3 hyperfine states respectively. A compact two-species double magneto-optical trapping (MOT) apparatus is constructed in which a pyramid MOT acts to provide an independent flux of both atomic species for capture in the ultra-high vacuum science region of the apparatus. For the two-species science MOT in which this atom flux is captured, interspecies light assisted inelastic collisions are found to be a highly significant loss mechanism. A novel optical pressure spatial displacement technique is developed to minimise such losses, allowing near independent simultaneous loading of up to ' 8 × 108 87Rb and ' 3 × 108 133Cs atoms into an Ioffe-Pritchard ‘baseball ’ magnetic trap at magnetic bias fields of 166.70(6) and 165.50(6) G respectively. At the loaded 87Rb and 133Cs atom number densities of 1.78(6) × 109 and

Jan 1, 20091 citation

The Collision Properties of Ultracold 133Cs Atoms

Related papers

The Collision Properties of Ultracold 133Cs Atoms

Related papers