Presentation materials
TRIUMF's Isotope Separator & ACcelerator (ISAC) facility provides beam to many pivotal nuclear astrophysics experiments. Among these is the Detector of Recoils And Gammas Of Nuclear reactions (DRAGON), which aims to explore the reaction rates of nuclear astrophysical processes by measuring resonances through radiative capture. For this, rare isotope beams delivered to DRAGON are manually tuned...
Accurate NMR shielding constants for arsenic (As) and antimony (Sb) in the AsF
Laser resonance ionization spectroscopy in the ion source coupled directly to the isotope production target has been proven to be a highly sensitive tool for nuclear structure investigations on isotopes with low production and extraction yields [1]. While the efficiency of this technique is unrivalled, the spectral resolution is ultimately limited by Doppler broadening. At the ion source...
Theoretical models often invoke triaxial nuclear shapes to explain elusive collective phenomena, but such assumptions are usually difficult to confirm experimentally. The only direct measurements of the nuclear axial asymmetry
Scandium (Sc) and Terbium (Tb) have gained significant interest in nuclear medicine due to their radioactive isotopes being suitable for cancer diagnostics and therapy, offering a promising avenue for theranostics. However, challenges persist in achieving high molar activity and radiochemical purity for medical applications. The physical isotope mass separation technique presents an interest...
Solid-state batteries (SSBs) are considered as a promising solution to address the safety issues and energy density limitations of conventional liquid batteries
This study aims to precisely measure the hyperfine structure (HFS) constant A, in neutron-rich potassium isotopes [1]. The in-beam laser-rf double-resonance spectroscopy [2] in a collinear geometry will be performed to obtain the relative precision of up to 10-4. This method, which has previously been applied only to stable isotopes, brings significantly enhanced precision through the use of...
One of the major scientific interests in the behaviour of He in diamond is due to the belief that the amount of
Shape coexistence in the neutron-deficient lead region around N
It is still under intensive discussion, how magnetoelectric coupling actually occurs at the atomic scale in multiferroic (BiFeO3 or BFO). Nuclear solid-state techniques monitor local fields at the atomic scale. Using such an approach, we show that, contrary to our own expectation, ferroelectric and magnetic ordering in BFO decouple at the unit-cell level. Time differential perturbed angular...
In order to accommodate an innovative spectrometer within a limited experimental hall space (5x5 meters) for HIE-ISOLDE, a new lattice configuration for the ISRS ring is proposed. This lattice consists of ten combined-function canted cosine-theta (CCT) superconducting magnets, while different approaches are being considered for the injection and extraction subsystems. The challenging...
This poster will present preliminary analysis of the COLLAPS thallium run from 2023. It will cover the collinear laser spectroscopy technique and detail results from the analysis of this dataset. These results will contain preliminary information on the charge radius, electric dipole moments and magnetic quadrupole moments of the thallium isotopes of interest as well as physics discussion...
The Offline 2 mass separator [1] is part of the CERN-ISOLDE offline facilities [2], which are required to perform essential quality assurance and benchmarking tests of new target and ion source units prior to their installation and irradiation at CERN-ISODLE. The separator resembles the online CERN-ISOLDE frontend and includes similar services such as the beam instrumentation, the gas mixing...
Excited states of
The ISOLDE Superconducting Fragment Separator (ISRS) is composed of a set of multifunction CCT superconducting magnets (MAGDEM) [1, 2], including both dipole and quadrupole functions [3]. A fully operational ion test bench (IONTB) is being developed to test the performance of the MAGDEM units under a realistic in-beam scenario. Despite being limited to a single MAGDEM unit, IONTB can provide...
The ISOLDE Superconducting Fragment Separator (ISRS) [1, 2] is an innovative a high-resolution spectrometer foreseen to study the structure and dynamics of radioactive nuclei at HIE-ISOLDE. The sicentific program requires the use of a variety of nuclear reactions including Coulomb breakup/dissociation, fusion-evaporation, and transfer reactions in direct and inverse kinematics. Part of the...
Naturally layered perovskites have become an impressive playground for the birth of novel multifunctional devices due to its great electronic tunability aiming at innovative alternatives for improved energy storage devices and electronics. In particular, the search for room temperature ferroelectrics (FE) and magneto electrics has seen a boost in research focused on these structures. However,...
The design of the ISOLDE Superconducting Fragment Separator (ISRS) [1] is based on a compact particle storage ring that uses a FFAG (Fixed Field Alternating Gradient) beam transport and a set of nested multifunction superconducting magnets (MAGDEM) [2]. Each MAGDEM unit include both dipole and quadrupole functions using a Canted Cosine Theta type (CCT) design, whose winding is inclined with...
ฮฒ-detected Nuclear Magnetic Resonance (ฮฒ-NMR) is a method for measuring the nuclear magnetic moment of unstable nuclei. It allows investigations of short-lived isotopes with a sensitivity inaccessible to conventional NMR. This increased sensitivity is gained by combining hyperpolarization of the nuclear spin generated through optical pumping, and an efficient detection exploiting the asymmetry...
ฮฒ-decay spectroscopy is a powerful tool for studying complex phenomena emerging in exotic neutron-rich nuclei, such as ฮฒ-delayed neutron emission [1-3]. Thanks to the high angular momentum selectivity of the process, ฮฒ-decay offers unique access to excited states in daughter nuclei having configurations similar to the decaying precursors.
ฮฒ-decay spectroscopy becomes an even more powerful...
At CERN-ISOLDE, over a thousand radioactive ion beams (RIBs) are generated from over 70 distinct types of target materials using the Isotope Separation Online Method (ISOL). The target material is bombarded with a high-energy proton beam (around 1.4 GeV) and undergoes nuclear reactions that lead to the production and release of artificially created isotopes, which are then ionised and...
The ISOLDE Superconducting Recoil Separator (ISRS) at CERN [1-3] is a high-resolution spectrometer for analysing the heavy fragments produced in reactions induced by ISOLDE's exotic beams. ISRS design is based on a compact FFAG particle storage ring composed of short straight multifunction superconducting magnets able to accommodate a wide range of momentum and energy spread. The team has...
In the pursuit of novel and highly efficient multiferroic materials, significant exploration has unfolded during the last decades. These materials, characterized by their ability to exhibit a myriad of intriguing phenomena, hold promise in enabling the electrical manipulation of magnetic degrees of freedom, thus offering numerous potential applications. Our research group focuses on the...
One of the upcoming upgrades of VITO beamline is a creation of a new end station for laser-rf double resonance spectroscopy to provide a strongly improved precision in determining the hyperfine structure (HFS) of unstable nuclei. Combined with high-precision measurements of nuclear magnetic moments using liquid beta-NMR at VITO, the new technique will allow determining the hyperfine anomaly in...
Isotope shift measurements and the King plot are an established method to determine the nuclear charge radius [1]. Nonlinear effects in King plots have recently gained additional interest as probes for higher-order nuclear deformation and beyond-standard-model physics [2]. Methods like the generalized King plot allow to extract multiple effects such as higher-order nuclear deformation and...
The neutron rich isotopes near the
Previously the long lived (>10 minutes) neutron rich isotopes
Pyrophoric metal carbides such as uranium carbides (UCx), thorium carbides (ThCx) and lanthanum carbides (LaCx) are used as target materials in CERN-ISOLDE to produce radioisotopes due to their high cross-section, thermal stability and porous structure. After irradiating these materials by proton beams, they become pyrophoric radioactive waste and require controlled oxidation prior to disposal...
At CERN-ISOLDE, over a thousand radioactive ion beams (RIBs) are produced from over 70 different types of target materials through the isotope separation online method (ISOL). The material is hit with a 1.4 GeV proton beam and undergoes nuclear reactions leading to the production and extraction of artificially created isotopes which are then ionized and extracted as ion beams.[1]
The design...
ISOLDE is a world-leading facility for radioactive ion beam (RIB) research using the Isotope Separation Online (ISOL) method, capable of producing over 1300 isotopes of more than 70 elements. It supports a diverse range of experiments in nuclear physics, nuclear astrophysics, laser physics, solid-state physics, and medical applications, with beam energies from 30 keV to 10 MeV/u. Serving...
Terbium-149 was proposed as an attractive candidate for Targeted Alpha Therapy (TAT) in the late 1990โs [1], due to its favourable physical decay properties (T1/2 = 4.1 h, Eฮฑ = 3.97 MeV, 17%; Eฮฒ+ mean = 720 keV, 7%) [2]. Preclinical studies have demonstrated its therapeutic potential [3-5], however, it was also demonstrated that it can be used for positron emission tomography (PET) [4]. The ...
One main objective of the ISRS project is to investigate residual nuclei production to enhance the ISRS performance and, thereby, guide more precise experimental designs for future research. The analysis in this area has been initiated using different computational codes, namely EMPIRE and PACE4 [1-2]. Our initial examination involves reactions on a CD
RIALTO, the Resonant Ionization Laser Ion Source at the ALTO (Accรฉlรฉrateur Linรฉaire et Tandem d'Orsay) facility, uses a multi-step laser excitation process to produce pure ion beams through the resonance ionization technique. The laser laboratory is equipped with three high-power Nd:YAG operating at 10 kHz and pumping three dye lasers; these lasers are coupled with BBO doubling units and one...
