ISOLDE Workshop and Users meeting 2017

Session

Poster Session

4 Dec 2017, 18:00

61/1-201 - Pas perdus - Not a meeting room - (CERN)

29. 111mCd in vanadium oxides: investigation of doping influence on local structure and phase transitions by time-differential perturbed angular correlations

Dr Robinson Alves dos Santos (Instituto de Pesquisas Energéticas e Nucleares - IPEN)

Poster

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...

9. A novel experiment for search of physics beyond the standard model

Michael Hass (Weizmann Institute of Science (IL))

Poster

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...

37. Absolute standardisation of $^{155}$Tb and precision nuclear data determination: accelerating clinical uptake of novel radioisotopes

Andrew Robinson (National Physical Laboratory, UK)

Poster

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...

19. Alpha decay of $^{180}$Tl

Dr Boris Andel (Comenius University in Bratislava)

Poster

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...

59. Coulomb Excitation of 206Hg using HIE-ISOLDE and Miniball

Lisa Morrison (University of Surrey)

Poster

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.

18. Investigation of isovector valence-shell excitations in nuclei around the N=82 shell closure

Ralph Otto Kern (Technische Universitaet Darmstadt (DE))

Poster

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....

16. Laser spectroscopic studies along the Al isotopic chain and the isomer-shift of the self-conjugate 26Al nucleus

Hanne Heylen (CERN)

Poster

H. Heylen for the COLLAPS - IS613 collaboration

Collinear laser spectroscopy was performed on $^{26-32}$Al ($Z = 13$) at the COLLAPS experiment in ISOLDE-CERN. From the measured isotope shifts in combination with multiconfiguration Dirac–Hartree–Fock calculations of the atomic mass and field shift factor [1], the differences in mean-square charge radii along the Al isotopic chain could be...

57. Laser spectroscopy of tin across N=82

Liss Vazquez Rodriguez (Université Paris-Saclay (FR))

Poster

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...

30. LIST 2.0 - New features and ongoing developments for ISOLDE’s Laser Ion Source and Trap LIST

Reinhard Matthias Heinke (Johannes Gutenberg Universitaet Mainz (DE))

Poster

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...

60. MIRACLS- the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy

Simon Lechner (Vienna University of Technology (AT))

Poster

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...

33. Negative ion source development at ISOLDE – towards the electron affinity measurement of astatine

David Leimbach (Gothenburg University (SE))

Poster

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...

38. New shielded collection chamber for medical isotope collections

Dr Fabien Lafont (Institut Laue-Langevin)

Poster

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...

7. On the automation of the chemical experiments with radionuclides at ISOLDE (SSP)

Dr Sergey Dedushenko

Poster

First wet-chemical experiments with Mn-57 were successfully conducted at ISOLDE in June 2017. These experiments comprised multiple steps: placement of a piece of metallic foil in the implantation chamber followed by its evacuation, accumulation of Mn-57 by ion-implantation into the foil, vacuum release and removal of the foil from the chamber, package and transportation of the foil to the...

32. Paving the way towards gamma-MRI

Robin Yoel Engel (Universitaet Oldenburg (DE))

Poster

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...

58. Reinforcing the participation and contribution of the Portuguese team @ HIE-ISOLDE

Daniel Galaviz Redondo (LIP Laboratorio de Instrumentacao e Fisica Experimental de Part)

Poster

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...

10. The phase-imaging ion-cyclotron-resonance detection technique using ISOLTRAP/CERN

Jonas Karthein (Max-Planck-Gesellschaft (DE))

Poster

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,...

22. Towards beta-detected Nuclear Magnetic Resonance in Liquids: Recent Technical Developments at the VITO Beamline

Robert Dale Harding (University of York (GB))

Poster

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...

12. WISArD: Status and perspectives

Victoria Isabel Araujo Escalona (KU Leuven (BE))

Poster

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...