Radioactive highly charged ions are of intrinsic interest in nuclear physics. High charge states can modify the available decay channels, for example forcing decay through highly suppressed modes or opening otherwise inaccessible decays. The subsequent change in nuclear lifetime is relevant to nucleosynthesis studies, which occur in hot, ionizing astrophysical environments. All requisite ingredients for such studies are united at the TITAN facility. Its EBIT, with electron beam energies up to 64 keV and currents up to 5A, charge breeds radionuclides produced at ISAC-TRIUMF. The trap ions are viewed through ports by a suite of germanium detectors or an extreme ultraviolet spectrometer for in-trap spectroscopy. Separately, the charge breeding capabilities are essential to boost the performance of the Penning trap mass spectrometer. The high charge states improve the resolving power and precision while the charge breeding itself can be used to improve beam purity. These enhancements are critical in studies of fundamental symmetries. TITAN's program of radioactive highly charged ions will be presented.

Highly Charged Ions (HCI) provide a unique probe that can be used to study the properties of radioactive nuclei. This is due to an interaction between the nucleus and the orbital electrons and has been used to uncover new nuclear decay modes, leading to observations of decay lifetimes different than the atomic lifetimes. Due to the unique challenge of producing and storing radioactive HCI, these types of experiments are quite rare. Here we report the commissioning of a new HPGe array for in-trap decay spectroscopy on radioactive HCI. The HPGe array is built around TITAN's Electron Beam Ion Trap (EBIT), which receives radioactive ion beams, charge breeds them, and stores them as HCI. Two future experiments are discussed: 1) the resonant stimulation of Nuclear Excitation via Electron Capture (NEEC) in 129Sb and 2) the observation of nuclear two-photon emission in 98Zr and 98Mo.

Nuclear charge radii, a quantity crucial in many nuclear physics studies, can be extracted from H- and Li-like electronic transitions, even in heavy ions, when combined with atomic theory * **. The latter has progressed to permit such calculations from transitions in Na-like ions *** ****. Charge breeding to Na-like charge state eases experimental requirements. To this end, at TRIUMF's Ion Trap for Atomic and Nuclear science (TITAN) facility, we are developing a high-efficiency, flat-field grazing incidence extreme-ultraviolet (EUV) spectrometer, for the measurement of absolute nuclear charge radii of short-lived nuclides. It will be installed to the Electron Beam Ion Trap (EBIT), which is capable of electron beam energies up to 66 keV. The spectrometer is designed to optimize transmission efficiency in the EUV regime. The ray-tracing simulations done in Shadow3 ***** will be presented. The first measurement candidates are 211Fr and a suitable spin-0 isotope of Ra, which are relevant for atomic parity violation (APV) experiments and searches for time-reversal violating permanent electric dipole moments (EDM).