Extending the work started with LOI144, we present preliminary perturbed angular correlations results of vanadium oxides. The goal of this work is to understand, along with first-principles calculations, the effects of doping on the local structure in the dopant neighboring and its consequence on the electric and magnetic properties of the host oxides. Vanadium oxides are particularly...
We present the details and status of a new experiment commissioned at Weizmann Institute of Science, Israel for a high precision study of the Weak Interaction via the beta-neutrino correlation in radioactive decay of short lived 6He. The facility consists of a 14 MeV d + t neutron generator to produce atomic 6He via the 9Be(n,alpha)6He reaction. The Be target was in the form of 40 porous BeO...
Introduction:
Interest in the element terbium (Tb) for medical application has grown recently [1]. Four Tb isotopes have been identified with the potential to provide unique theragnostic treatment strategies which combine cancer therapy with diagnostic imaging. The isotopes $^{155}$Tb and $^{152}$Tb can provide SPECT and PET imaging respectively [2], whilst $^{161}$Tb can be used for...
Alpha-decay measurement is an important source of information on nuclear structure of exotic isotopes, especially when coincident $\gamma$ rays are registered as well. Respective fine-structure $\alpha$ decays can be disentangled from complicated $\alpha$-decay spectrum and excited states in daughter nucleus can be established. This is particularly valuable for investigation of odd-odd...
My poster will summarise the experimental methods, simulations and results for the coulomb excitation of the singly magic two-proton-hole nucleus 206Hg. Doing so will provide information on both quadrupole and octupole collectivity of this nucleus and as a result provide an insight into its shape.
A particular interest in contemporary nuclear structure research is the impact of the local shell structure on the proton-neutron mixing in low-energy quadrupole states at the onset of collectivity near neutron shell closures. In near-spherical nuclei, the two simplest quadrupole-collective excitations can be understood as a mixture of the collective $2^+$ proton and $2^+$ neutron excitations....
The hyperfine structure and isotope shift of the neutron-rich tin isotopes have been measured across the N=82 shell closure for the very first time. The work has been carried out at ISOLDE, CERN by high-resolution collinear laser spectroscopy. The charge radii and electromagnetic moments of ground and isomeric states along 107-134Sn show regularities which can be explained within the...
Today ion sources based on laser resonance ionization are well-established core techniques at the worldwide leading radioactive ion beam facilities such as CERN-ISOLDE or ISAC-TRIUMF. Ensuring both, highly efficient and element-selective ion beam production to the users, these devices in addition allow for direct laser spectroscopic investigations on exotic nuclei far off stability with lowest...
Collinear laser spectroscopy (CLS) is a powerful tool, with a long and successful history at COLLAPS/ISOLDE, to access nuclear ground state properties such as spin, charge radius, and electromagnetic moments with high precision and accuracy [1]. Conventional CLS is based on the optical detection of fluorescence photons from laser-excited ions or atoms. It is limited to radioactive ion beams...
Most commonly, ISOLDE uses positively charged ion beams produced by a variety of ion sources such as the positive surface ion source, the Resonance Ionization Laser Ion Source (RILIS) or the Forced Electron Beam Induced Arc Discharge (FEBIAD) ion source. In recent years, the availability of negative ion beams at ISOLDE was re-established and the development program for negative ion sources was...
Recent preclinical experiments using Tb isotopes produced at ISOLDE enabled significant progress in the field, including the first demonstration of PET imaging with an alpha emitter [1] and the demonstration of 152Tb as theranostic match for the clinically used 177Lu therapeutic isotope [2]. These successes enormously raised the interest of the medical community and a first clinical...
A 2016 publication in Nature [1] presented a proof of principle experiment for a new method of medical imaging. The new technique uses many elements of traditional Magnetic Resonant Imaging (MRI), but replaces the measurement of RF signals from 1H nuclei with the detection of anisotropic gamma-emission from a hyperpolarized radioactive tracer, in this case 131mXe.
Since gamma-radiation is far...
The experimental nuclear physics group of the Faculty of Science of the University of Lisbon has recently joined the consortium of groups traditionally working at ISOLDE in fundamental nuclear physics. Nowadays, integrated at the LIP laboratory, our group has increased its presence and participation at various levels at the ISOLDE laboratory and is looking forward to the promising future of...
For three decades, the ISOLTRAP experiment at ISOLDE/CERN has performed high-precision mass measurements of short-lived nuclides using the time-of-flight ion-cyclotron-resonance (ToF-ICR) detection method, which is reaching its limits for accessible half-lives and relative uncertainties. With the new phase-imaging ion-cyclotron-resonance (PI-ICR) [S. Eliseev et al., Phys. Rev. Lett. 110,...
β-NMR is powerful tool which takes advantage of the anisotropic nature of beta decay to measure a range of nuclear properties. Nuclei are first polarised, then implanted into a crystal or sample of interest from which beta decay intensities are measured in opposing directions. The nuclear structure information is extracted from the excitation radio-frequency which resonantly destroys the...
The new WISArD (Weak Interaction Studies with 32Argon Decay) experiment reutilises the former WITCH superconducting magnet at ISOLDE to measure the beta-neutrino angular correlation coefficient. 32Ar decays by beta-delayed proton emission. The protons emitted from the recoiling 32Cl daughter nuclei experience thus a Doppler effect, which shifts their energy. The proton and positron detection...
