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Title “Ultracold gases – from the experimenters’ perspective (I)” Wolfgang Ketterle Massachusetts Institute of Technology MIT-Harvard Center for Ultracold.

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Presentation on theme: "Title “Ultracold gases – from the experimenters’ perspective (I)” Wolfgang Ketterle Massachusetts Institute of Technology MIT-Harvard Center for Ultracold."— Presentation transcript:

1 Title “Ultracold gases – from the experimenters’ perspective (I)” Wolfgang Ketterle Massachusetts Institute of Technology MIT-Harvard Center for Ultracold Atoms 7/10/06 Innsbruck ICAP Summer School

2 Subtitle Magnetic trapping

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15 Adiabatic condition

16 Majorana flops

17 Levitron movie

18 Mtrap - radial and axial fields

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20 B fields levitron

21 Stability of levitation

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23 Magnetic trap basics

24 Weak field seeking states

25 Types of magnetic traps

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27 TOP trap

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29 Types of magnetic traps

30 IP trap geometry

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33 IP trap

34 IP trap - hi and lo B

35 Photo of cloverleaf coils

36 Subtitle Evaporative cooling

37 Chopping the MB distribution

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54 Runaway evap.

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56 Efficiency of evap. cooling

57 Scenario of evap. cooling

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59 Rf induced evaporative cooling

60 Hyperfine states in rf evap

61 3D and 1D evap. cooling

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63 Cooling limit for evaporative cooling? No fundamental limit Practical limit: Depends on residual heating process i.e. secondary collisions, density dependent loss term

64 Subtitle Imaging

65 Imaging atoms

66 Phase-contrast imaging

67 Coherent and incoherent scattering

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79 Dark ground and phase contrast setup

80 A live condensate in the magnetic trap (seen by dark-ground imaging) Phase transition, dark ground

81 Phase transition, phase contrast

82 BEC peak Thermal wings,  Temperature


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