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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-3738
DTSTART:20150821T150000Z
DURATION:PT1H0M0S
DTSTAMP:20260419T110539Z
LAST-MODIFIED:20150810T130927Z
LOCATION:5310 Chamberlin Hall
SUMMARY:Ultracold electron and ion beams from cold gases: Beating Coul
 omb effects with beam shaping and Rydberg blockade\, Atomic Physics Se
 minar\, Dene Murphy \, University Melbourne
DESCRIPTION:Coulomb interactions limit the brightness of charged parti
 cle beams. Controlling the effects of nonlinear beam expansion (space 
 charge) and disordered inter-particle scattering is of critical import
 ance for applications ranging from ultrafast electron diffraction to i
 njectors for particle accelerators. In this talk I will show that ultr
 a-cold ion bunches extracted from laser-cooled atoms can be used to ob
 serve the effects of Coulomb interactions with unprecedented detail. A
 rbitrarily shaped bunches are created to reverse the space-charge prob
 lem\, and excitation of the cold atoms to Rydberg states prior to ioni
 sation reduces the disorder-induced heating effect. I will present our
  experimental results that demonstrate improved beam brightness and mo
 dels and simulations of the effects.
URL:https://www.physics.wisc.edu/events/?id=3738
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