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A versatile electrostatic trap

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arxiv physics/0603006 v1 pith:N4OD7HWK submitted 2006-03-01 physics.atm-clus

A versatile electrostatic trap

classification physics.atm-clus
keywords fielddipolehexapoletrappingdouble-wellelectrostaticfourpacket
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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A four electrode electrostatic trap geometry is demonstrated that can be used to combine a dipole, quadrupole and hexapole field. A cold packet of 15ND3 molecules is confined in both a purely quadrupolar and hexapolar trapping field and additionally, a dipole field is added to a hexapole field to create either a double-well or a donut-shaped trapping field. The profile of the 15ND3 packet in each of these four trapping potentials is measured, and the dependence of the well-separation and barrier height of the double-well and donut potential on the hexapole and dipole term are discussed.

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