Speaker: Klaus Blaum (Max-Planck-Institut für Kernphysik, Heidelberg)
Title of Talk: Precision Penning-Trap Mass Measurements on Highly Charged Heavy Ions for Fundamental Studies
Abstract:  An overview is given on recent mass measurements with extreme precision on single stored highly charged ions in the PENTATRAP Penning-trap mass spectrometer. Relative uncertainties in the low 10-12 regime could be demonstrated, allowing among others to measure the excitation energies of low-lying metastable electronic states by their mass differences to the ground states. Thus, possible new clock transitions in the extreme ultraviolet (XUV) regime could be detected. Furthermore, precision mass data on long isotopic chains allow together with high-resolution laser spectroscopic isotope shift measurements for a fifth force search.

Venue (HYBRID-EVENT): Goldene Box, Physikalisches Institut, INF 226, 69120 Heidelberg AND all talks will also be streamed via the permanent Zoom-link:

Meeting ID: 946 0240 1603
Passcode: 386993

13:00 – 13:45  talk
13:45-14:00   questions & discussion
14:00 pizza


The main idea of the CRC 1225 Lunch Seminars is to bring together all scientists involved in our collaboration on a regular basis to allow exchange and discussion even outside one’s own research topics. We therefore invite all PIs and working group members of the CRC 1225 ISOQUANT to participate in the Lunch Seminars and to use this opportunity for getting to know each other, fruitful discussions and valuable exchange.

The seminar will take place in presence in accordance with the current COVID-19 regulations for on-site events (Please wear a FFP2 mask or surgical mask if the minimum distance of 1.5m can not be guaranteed).