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.

Together with the AGs Stienkemeier and Lau we are hosting the Clustertreffen 2022

Topics

 

Methods

 

Instrumentation

 

Setups at different locations

Impressions from the lab

  • Burning Argon plasma
  • 2019 beamtime setup top
  • Regenerative amplifier of the 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
image slider by cssSlider.com v2.1

News

june 2022
We are planning the Clustertreffen 2022

14-18 march 2022
Februar 2022
Kevin Schwarz joined us as a PhD student of the new Research Training Group DynCAM (RTG 2717)

September 2021
We made a new publication: Photoelectron Spectroscopy of Large Water Cluster Anions
J. Phys. Chem. A 2021, 125, 38, 8426–8433

August 2021
Phillip Stöcks joined us as a Master student

July 2021
Our PhD student Aghigh Jalehdoost handed in her thesis Anion Photoelectron Spectroscopy of Acenes

June 2021
We made a new publication: Decoherence-Induced Universality in Simple Metal Cluster Photoelectron Angular Distributions
Phys. Rev. Lett. 126, 233201 (2021)

May 2021
We made a new publication: Site-selective soft X-ray absorption as a tool to study protonation and electronic structure of gas-phase DNA
Phys. Chem. Chem. Phys., 2021, 23, 11900

09 March 2021
Watch our Presentation of research Video and visit our Online-Meeting room for discussion https://uni-freiburg.zoom.us/j/68926444104

March 2021
Our new group website! http://cluster.physik.uni-freiburg.de has been hosted!

February 2021
We made a new publication: Probing Structural Information of Gas-Phase Peptides by Near-Edge X-ray Absorption Mass Spectrometry
J. Am. Soc. Mass Spectrom. 2021, 32, 3, 670–684 (2021)

January 2021
We made a new publication: The electronic structure and deexcitation pathways of an isolated metalloporphyrin ion resolved by metal L-edge spectroscopy Chem. Sci (2021)

12-13 October 2020
We are present at the 29th FMF Colloquium.

October 2020
Our bachelor student Timo Lang handed in his thesis

September 2020
Our PhD student Simon Dold handed in his thesis Time-resolved imaging of laser-induced phase transitions in free silver nanoclusters and starts as instrument scientist in the Small Quantum Systems Team at XFEL

September 2020
We made a new publication: Structures, stabilities and electronic properties of TimSin- (m = 1‒2, n = 14‒20) clusters: a combined ab initio and experimental study The European Physical Journal Plus volume 135, Article number: 734 (2020)

July 2020
We made a new publication: The carbon and oxygen K-edge NEXAFS spectra of CO+ Phys. Chem. Chem. Phys., 2020, 22, 16215 (2020)

June 2020
We made a new publication: Nonexistence of the decahedral Si20H20 cage: Levinthal's paradox revisited Phys. Rev. B 101, 214303 (2020)

May 2020
We made a new publication: X-Ray Absorption Spectrum of the N2+ Molecular Ion Phys. Rev. Lett. 124, 203001 (2020)