Jöhren, Raphael: Spectroscopy of the hyperfine transition in lithium like bismuth at the ESR at GSI and an APD based single photon detector for laser spectroscopy on highly [...]. 2013
Inhalt
- Introduction
- Hyperfine structure and QED tests
- Hyperfine structure and transitions
- Energy structure of one-electron atoms
- The hyperfine structure of one electron atoms
- The hyperfine structure of highly charged ions
- Test of QED
- Transition probabilities and lifetimes
- Evaluation of the HFS transition wavelength in 209Bi80+ and 209Bi82+ in the LIBELLE experiment
- The LIBELLE Experiment
- Experimental setup
- Fluorescence light detection at the ESR
- The segmented mirror section
- Emission characteristics of relativistic excited ions
- Relativistic Doppler-effect and forward boost
- Number of excited ions
- Simulated signal rates and detection times
- New detector systems
- LIBELLE Data acquisition
- LIBELLE beamtime and data analysis
- LIBELLE beamtime
- Analysis
- Extracting the laser steps
- Associating a wavelength to the laser steps
- Obtaining count rate differences from stacked TDC data
- Fitting the resonances
- Resonance wavelengths in the laboratory system
- Resonance wavelengths in the ion rest frame
- An APD based single photon detector for the SpecTrap experiment
- The SpecTrap Experiment
- Experimental setup
- The SpecTrap Penning trap
- Superconducting magnets and vacuum system
- SpecTrap beamline and ion sources
- Ion excitation
- Fluorescence light detection at SpecTrap
- Detector test setup
- The detector test setup
- Single-photon sources
- RMD S0223 Avalanche Photo Diodes as single-photon detectors
- Avalanche photo diodes
- Basic APD characterization
- Determination of single-photon detection efficiency
- An APD detector setup for SpecTrap
- Conclusion and outlook
- Appendix
- Operating procedure for the APD setup
- Circuit diagrams
- Datasheets
- List of figures
- List of tables
- References