Narrow Results

JYFLTRAP project has produced of the order of 200 atomic masses with the precision of few keV or better. Many of these studies have been performed on medium mass neutron-rich nuclei produced in proton induced fission. They have revealed information on the evolution of shell gaps, appearance of shape changes as well as contributed to the better knowledge of the mass surface.

This article summarizes preparations at the University of Washington for a precision measurement of the mass ratio of H-3 (tritium) to He-3 with a new Penning trap mass spectrometer. This work will be continued at the Max-Planck-Institute for Nuclear Physics in Heidelberg in the Division of Stored and Cooled Ions. Only preliminary ion observations were performed in Seattle, but the target mass uncertainty for the measurement techniques under development is 1 part in 10¹¹.