Cluster physics Freiburg

The group does research on clusters, small aggregates (N = 3 or 4 up to several thousands) of atoms or molecules, which are transitional forms of matter between atoms and molecules and their corresponding bulk forms. Properties of clusters are studied as a function of cluster size for fundamental reasons as well as technological reasons: clusters may offer ways to make altogether new kinds of materials.

Topics

Electronic and geometric structures

Thermodynamic properties

Ultrafast processes

Wavefunction character

Magnetic properties

Methods

Instrumentation

CASI

Berta

Mobile Source

Mobile Spectrometer

Organic Clusters

*NEW* XPS machine

Setups at different locations

Nanocluster trap at BESSY II, Berlin (cooperation with AG Lau)

Cluster storage ring at TICNN, Tianjin, China

Cluster deposition module at the synchrotron DIAMOND, Harwell, UK (cooperation R. Palmer and G. Held)

Impressions from the lab

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Burning Argon plasma 2019 beamtime setup top Regenerative amplifier of a femto laser Gold plated interaction zone 2019 beamtime setup side Used Niobium sputter target Cold head shield Flight tube Burning Argon plasma Deposited lead clusters on hexapole ion guide Spectrometer during baking LN2 cooling system Sputter head Typical photoelectron angular distributions for small Na clusters Femto laser oscillator Cluster machine Aggregation tube with deposited giant clusters Burning Argon plasma Cluster deposition chamber Ion trap with cold head shield Burning Helium plasma