Homonuclear ionizing collisions of laser-cooled metastable helium atoms

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dc.creatorStas, R. J. W.
dc.creatorMcNamara, J. M.
dc.creatorHogervorst, W.
dc.creatorVassen, W.
dc.date2006-01-18
dc.date.accessioned2026-07-07T06:57:39Z
dc.date.available2026-07-07T06:57:39Z
dc.descriptionWe present a theoretical and experimental investigation of homonuclear ionizing collisions of laser-cooled metastable helium atoms, considering both the fermionic He-3 and bosonic He-4 isotope. The theoretical description combines quantum threshold behavior, Wigner's spin-conservation rule and quantum statistical symmetry requirements in a single-channel model, complementing a more complete close-coupling theory that has been reported for collisions of metastable He-4 atoms. The model is supported with measurements (in the absence of light fields) of ionization rates in magneto-optically trapped samples, that contain about 3*10^8 atoms of a single isotope. The ionization rates are determined from measurements of trap loss due to light-assisted collisions combined with comparative measurements of the ion production rate in the absence and presence of trapping light. Theory and experiment show good agreement.
dc.description15 pages, 6 figures, submitted to Phys. Rev. A
dc.identifierhttps://arxiv.org/abs/cond-mat/0601414
dc.identifierhttp://arxiv.org/abs/cond-mat/0601414
dc.identifierPhys. Rev. A73, 032713 (2006)
dc.identifierdoi:10.1103/PhysRevA.73.032713
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/107048
dc.subjectOther Condensed Matter
dc.titleHomonuclear ionizing collisions of laser-cooled metastable helium atoms
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