Suppression of Penning ionization in a spin-polarized mixture of rubidium and He
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Byron, Lesa; Dall, Robert; Wu, Ju-Kuei (Rugway); Truscott, Andrew
Description
This paper presents the first study of the collision dynamics of an ultra-cold spin-polarized mixture of rubidium and metastable helium (He*) atoms. Our experiment monitors ion production from the mixture for both magnetically polarized and unpolarized cases. In the unpolarized case, we observe an increase in our background ion rate. However, in the completely polarized sample the ion production is below the sensitivity of our experiment. Nonetheless, we determine an upper limit of 5 × 10-12 cm...[Show more]
dc.contributor.author | Byron, Lesa | |
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dc.contributor.author | Dall, Robert | |
dc.contributor.author | Wu, Ju-Kuei (Rugway) | |
dc.contributor.author | Truscott, Andrew | |
dc.date.accessioned | 2015-12-07T22:42:38Z | |
dc.identifier.issn | 1367-2630 | |
dc.identifier.uri | http://hdl.handle.net/1885/24628 | |
dc.description.abstract | This paper presents the first study of the collision dynamics of an ultra-cold spin-polarized mixture of rubidium and metastable helium (He*) atoms. Our experiment monitors ion production from the mixture for both magnetically polarized and unpolarized cases. In the unpolarized case, we observe an increase in our background ion rate. However, in the completely polarized sample the ion production is below the sensitivity of our experiment. Nonetheless, we determine an upper limit of 5 × 10-12 cm 3 s-1 for the polarized rate constant (β Rb-He*), which is two orders of magnitude below the unpolarized rate constant. Such a suppression of the He*-87Rb polarized rate was not apparent a priori and opens the intriguing possibility of creating a dual Bose-Einstein condensate comprising an alkali ground-state atom and an excited-state noblegas atom. | |
dc.publisher | Institute of Physics Publishing | |
dc.source | New Journal of Physics | |
dc.subject | Keywords: Apriori; Bose-Einstein condensates; Collision dynamics; Ground-state atoms; Ion production; Ion rates; Metastable helium; Orders of magnitude; Penning ionization; Spin-polarized; Ultra-cold; Upper limits; Atoms; Helium; Ions; Mixtures; Rate constants; Sta | |
dc.title | Suppression of Penning ionization in a spin-polarized mixture of rubidium and He | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 12 | |
dc.date.issued | 2010 | |
local.identifier.absfor | 020201 - Atomic and Molecular Physics | |
local.identifier.ariespublication | u4860843xPUB33 | |
local.type.status | Published Version | |
local.contributor.affiliation | Byron, Lesa, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Dall, Robert, College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Wu, Ju-Kuei (Rugway), College of Physical and Mathematical Sciences, ANU | |
local.contributor.affiliation | Truscott, Andrew, College of Physical and Mathematical Sciences, ANU | |
local.description.embargo | 2037-12-31 | |
local.bibliographicCitation.issue | 013004 | |
local.bibliographicCitation.startpage | 8 | |
local.identifier.doi | 10.1088/1367-2630/12/1/013004 | |
local.identifier.absseo | 970102 - Expanding Knowledge in the Physical Sciences | |
dc.date.updated | 2016-02-24T11:24:48Z | |
local.identifier.scopusID | 2-s2.0-75749130726 | |
local.identifier.thomsonID | 000273568800001 | |
Collections | ANU Research Publications |
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