SMILETRAP & JYFLTRAP

Atomic masses on Nordic scales Atomic mass values hold information not only of the constituents of the atoms, electrons, neutrons and protons, but more importantly of the forces holding these together. Precise atomic mass values are key input parameters in many research fields of physics, ranging from molecular physics to particle physics and astronomy. Over the last decades Penning traps have proven to be versatile instruments for atomic mass measurements. There are now many traps dedicated to this. One of the first, and the first ever to use highly charged ions in mass measurements, was SMILETRAP in Sweden. The other Nordic Penning trap for mass measurements is JYFLTRAP in Finland, dedicated to investigations of exotic elements far from the line of stability. Currently, the setup is being developed to also use the trap for independent fission yield measurements. Improved knowledge of fission yield distributions are important for nuclear power applications, but can also help to improve the theoretical understanding of the fission process itself as well as the astrophysical r-process. In this talk I will present the general setup of the two traps and some of the technical achievements. I will also present some of the highlights from the measurements with SMILETRAP as well as the upcoming program for fission yield measurements at JYFLTRAP.