Speaker
Dr
Susanne Kreim
(Max-Planck-Institut fuer Kernphysik (MPI)-Unknown-Unknown)
Description
Precision mass measurements are performed at the mass spectrometer ISOLTRAP which is located at the isotope separator ISOLDE/CERN. The time-of-flight method is employed to determine the frequency of an ion stored in a Penning trap from which the mass can be extracted. Of special interest are exotic nuclei whose mass can be determined with a relative uncertainty of down to 10-8. These values help to examine nuclear structure effects, revising mass models or are incorporated into nucleo-synthesis calculations. In the past year, ISOLTRAP delivered precious data to some of these applications: Determining the two neutron separation energy of 64-66Mn allowing for ruling out a possible shell closure at N=40. The nucleus 66Mn with a half-life of only 64ms is thereby the shortest-lived nuclei ever to be measured at ISOLTRAP. In addition, the masses of 96,97Kr disproved the assumption of some mass models – such as e.g. HFB17 – that a region of deformed nuclei existed around N=60. Nuclei lying far from stability can furthermore be used to test mass models, thus shedding light on the r-process; one of them being the masses of 122-124Ag. Finally, the determination of the mass of 194Hg allows for improving the reachable limit for the electron neutrino mass to about 20eV.
| Are you a student, postdoc or an attendee from an “emerging” country and would like to apply for financial support? | no |
|---|---|
| Is this an invited talk? (please answer yes or no) | no |
| Would you prefer your contribution to be an oral presentation? (please answer yes or no) | yes |
| Would you prefer your contribution to be a poster presentation? (please answer yes or no) | no |
Author
Dr
Susanne Kreim
(Max-Planck-Institut fuer Kernphysik (MPI)-Unknown-Unknown)
