Abstract:  Rhenium-186 (186Re), arsenic-77 (77As), and rhodium-105 (105Rh) are radionuclides with nuclear properties suitable for “theranostics” in that they emit both beta particles for radiotherapy and gamma rays for imaging, with 90 h, 38.8 h and 35.4 h half-lives, respectively. Additionally, 72As is a positron emitter that is a true “matched pair” radioisotope for 77As. All of these radionuclides can be produced in high specific activity at either an accelerator or nuclear reactor. High specific activity 77As and 105Rh are produced by thermal neutron irradiation of 76Ge or 104Ru, followed by beta decay, with the 77As and 105Rh separated from the enriched targets. High specific activity 186Re can be produced by either proton or deuteron irradiation of enriched 186W or by proton irradiation of enriched Os targets, again followed by separation of the 186Re- from its target material. Sulfur-containing chelates (either thiols or thioethers) are used to form stable complexes with these radionuclides. The chemistry and radiochemistry from production through preliminary biological studies will be presented.

Abstract:  Uncertainty quantification has seen a strong renewed interest in recent years within the theoretical nuclear physics community and its importance can hardly be overstated. As chiral effective field theories expand their range of applicability across the nuclear chart, the the study of the effects of statistical and systematic uncertainties in nuclear structure calculations is still a work in progress. This seminar will review some of the techniques and efforts on quantifying statistical uncertainties in NN interactions and their subsequent propagation into the calculation nuclear structure observables. Recent progress on the propagation of statistical uncertainties from DFT into astrophysical phenomena will be discussed as well.

Abstract:  TBA

Abstract:  Many progresses have been made in developing nuclear Hamiltonians within the framework of chiral effective field theory. In particular, the develop of chiral interactions that are fully local opened the way of implementing these Hamiltonians in Quantum Monte Carlo calculations. The advantage of using Quantum Monte Carlo methods is that they are not limited to use soft interactions, and calculations dedicated to explore the role of cutoffs can be done. I will devote part of this talk in discussing several new results for nuclei up to A=16, and addressing several questions regarding the prediction power of these Hamiltonians, and issues related to regulators and cutoffs. I will show properties like energies, radii, form factors, and others. In the second part of the talk I will show new results of few neutron resonances. While several experiments have been very recently proposed to measure four- (and three-) neutron resonances, on the theory side several calculations give very different results. I will show how our calculations suggest that three-neutron resonances might be lower than four-neutrons.