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Recent Total Absorption Spectroscopy (TAS) experiments at the ISOLDE have provided new nuclear data with implications spanning from nuclear astrophysics to medical applications.
In the astrophysical domain, the beta+/EC decay of the waiting-point nucleus 64Ge has been measured with the Lucrecia TAS setup. The resulting B(GT) distribution has been compared with theoretical calculations using QRPA and the Projected Shell Model, providing key constraints for modelling the rp-process reaction network and Type I X-ray burst light curves.
In the A=64–66 mass region, new TAS results on the beta decay of 64Ga and 66Ga have enabled the extraction of the Fermi transition strength B(F) for the forbidden 0+-->0+ decay to the ground state of the daughter nucleus. From this, the degree of isospin mixing in the parent nuclei has been deduced, confirming previous findings.
Finally, in the area of nuclear medicine, the beta+/EC decay of 152Tb has been studied. This isotope is part of the promising theranostic pairs 152Tb-177Lu, -149Tb or -166Tb, and our results show significant deviations from the evaluated data in ENSDF, with direct relevance for dosimetry and radiopharmaceutical modelling.
These results highlight the broad impact of TAS measurements carried out at ISOLDE on nuclear data for fundamental and applied research.