The half-life re-measured: consolidating the chronometer for events in the early Solar System.

The half-life of the extinct radiolanthanide , important for both geochronological and astrophysical applications, was re-determined by a combination of mass spectrometry and -decay counting. Earlier studies provided only limited information on all potential factors that could influence the quantification of the half-life of . Thus, special attention was given  here to a complete documentation of all experimental steps to provide information about any possible artifacts in the data analysis.

Measurement of the ^{140}Ce(n,γ) Cross Section at n_TOF and Its Astrophysical Implications for the Chemical Evolution of the Universe.

^{140}Ce(n,γ) is a key reaction for slow neutron-capture (s-process) nucleosynthesis due to being a bottleneck in the reaction flow. For this reason, it was measured with high accuracy (uncertainty ≈5%) at the n_TOF facility, with an unprecedented combination of a high purity sample and low neutron-sensitivity detectors. The measured Maxwellian averaged cross section is up to 40% higher than previously accepted values.

Terbium-149 production: a focus on yield and quality improvement towards preclinical application.

Terbium-149 (T = 4.1 h, E = 3.98 MeV (16.

Determination of the half-life of gadolinium-148.

The half-life of the alpha-emitter Gd was measured using the "direct method", in which the number of atoms is directly determined and their activity is then measured. Pure Gd samples containing megabecquerels of Gd were obtained by reprocessing proton-irradiated tantalum material. Multicollector-inductively coupled plasma mass spectrometry was performed to determine the amount of Gd atoms retrieved.

High precision half-life measurement of the extinct radio-lanthanide Dysprosium-154.

Sixty years after the discovery of Dy, the half-life of this pure alpha-emitter was re-measured. Dy was radiochemically separated from proton-irradiated tantalum samples. Sector field- and multicollector-inductively coupled plasma mass spectrometry were used to determine the amount of Dy retrieved.