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Yorick Blumenfeld (CERN)18/11/2009, 09:00
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Takashi Nakamura (Tokyo Institute of Technology)18/11/2009, 09:10Recent experimental results on Coulomb and nuclear breakup for neutron drip-line nuclei at the newly commissioned RIBF at RIKEN are presented. Coulomb breakup reaction is a useful tool to probe halo structure since the cross section is enhanced due to the large E1 transitions at low excitation energies (soft E1 excitation) for halo nuclei. We have measured inclusive Coulomb breakup cross...Go to contribution page
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Kathrin Wimmer (Physik Department E12, Technische Universitaet Muenchen)18/11/2009, 09:40The "Island of inversion" is a region in the nuclear chart around the neutron rich N=20 isotopes of Ne, Na and Mg, where intruder fp-orbitals favoring deformed shapes compete with the normal spherical sd configurations. Transfer reactions yield important spectroscopic information, i.e. spin and parity assignments as well as spectroscopic factors, complementary to the information obtained...Go to contribution page
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Michael Seidlitz (Institut für Kernphysik, Universität zu Köln)18/11/2009, 10:00For the $^{28,29,30}$Na isotopes a gradual transition from the usual filling of the neutron levels into the region with low lying 2p-2h cross shell configurations, the so-called island of inversion, is described by theory [1,2]. Detailed theoretical predictions for the transition strength are awaiting experimental verification in all three Na nuclei. Collective properties of excited states of...Go to contribution page
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Joerg Kraemer (University Mainz, Germany)18/11/2009, 10:20The nuclear charge radius is a critical probe for testing nuclear models and detecting anomalies in the nuclear structure. The isotopic chain of magnesium exhibits intruder configurations with the pf shell being populated before the sd shell is complete. In this “island of inversion” the nuclear charge radii would indicate this structural change, expected to happen in the step from 30Mg to...Go to contribution page
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Alexander Herlert (CERN)18/11/2009, 11:10The ISOLTRAP Penning trap mass spectrometer has contributed many precise and accurate ground state masses, e.g., for the investigation of nuclear structure, the determination of charge radii, or the study of nucleosynthesis pathways, just to name a few applications. With ISOLTRAP also new techniques were introduced which allow one to make better measurements or to reach more and more exotic...Go to contribution page
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Bradley Cheal (The University of Manchester, UK)18/11/2009, 11:40Laser spectroscopy has been performed on isotopes of gallium at ISOLDE. This work reports the first use of ISCOOL (a gas-filled linear Paul trap) for new laser spectroscopic experiments. Ground state nuclear spin values, magnetic dipole moments, electric quadrupole moments and mean-square charge radii have been extracted for isotope masses in the range A = 67 − 82. An inversion of ground state...Go to contribution page
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Dennis Mücher (Institute for Nuclear Physics, University of Cologne)18/11/2009, 12:00Recently the energy of the first 2+ state in the N=60 96Kr nucleus was determined to be 241 keV. This was the first experimental observation of an excited state in this highly exotic nucleus. The 2+1 state in 94Kr is located at 665.5 keV, i.e. E(2+1) drops by more than 400 keV at N=60. This lowering of the 2+1 energy indicates a sharp shape transition behavior which is somewhat similar to that...Go to contribution page
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Sarah Naimi (Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse (CSNSM))18/11/2009, 12:20The results of two recent ISOLTRAP experiments are discussed in this contribution. (1) Sudden offset of deformation around N=60 (or, Reformation of Kr isotopes around N=60) Whereas canonical nuclear structure decrees a sub-shell closure at N=56, neutron-rich Zr and Sr istopes are known to exhibit sudden and intense deformation instead. This deformation, visible from a deep dent in...Go to contribution page
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Pieter Vingerhoets (Instituut voor Kern- en Stralingsfysica, K.U.Leuven, Celestijnenlaan 200D B-3001 Leuven, Belgium.)18/11/2009, 12:40In this presentation we report on the measurement of the magnetic and quadrupole moments of the Cu isotopes with collinear laser spectroscopy at the Collaps beamline, along with the extraction of the mean square charge radii of the Cu isotope chain. The Cu isotopes have only one proton outside the magic Z=28 shell, and have therefore attracted a lot of nuclear research interest in the past...Go to contribution page
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Moumita Maiti (Saha Institute of Nuclear Physics)18/11/2009, 14:10The proposed EURISOL facility is expected to be the world’s largest ISOL facility to produce a large variety of high intensity radioactive ion beam in near future. Unlike the existing ISOL facilities, mercury or lead-bismuth target will be exploited simultaneously as neutron converter and coolant in the EURISOL facility. A large number of radionuclides will be produced as a result of a few GeV...Go to contribution page
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Seung-Woo Hong (Sungkyunkwan University)18/11/2009, 14:40In 2009 the Korean government announced a plan to construct a Heavy Ion Accelerator facility in Korea. A plan to construct a Heavy Ion Accelerator to produce rare isotope beams is underway. The construction of this facility will be one of few mega-projects for basic science research facility in Korea. This facility tentatively referred to as KoRIA (Korea Rare Isotope Accelerator) is planned as...Go to contribution page
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Elena wildner (CERN)18/11/2009, 15:00Ion production needs for beta beams “Neutrino properties are interesting probes to physics beyond the Standard Model. High quality neutrino beams of pure electron (anti-)neutrinos can be produced by accelerating beams of beta radioactive ions (beta beams) and let them decay in long straight sections in a race track shaped storage ring. Two ion species are needed, one producing neutrinos...Go to contribution page
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Thierry Stora (CERN)18/11/2009, 15:20We report here results obtained this year on the production of Beams by (n,X) reactions with the ISOLDE neutron converter. The converter is traditionally used to produce n-rich fission fragments in UCx targets. We present here data on 9Be(n,alpha)6He obtained with a new BeO target coupled to the VADIS ion source. Record 6He intensities were indeed obtained. Information on the neutron...Go to contribution page
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Michael Hass (Weizmann Institute of Science)18/11/2009, 15:40The standard model of particle physics has proved to provide a good description of almost all known particle physics processes. Despite it's suc- cesses, however, the standard model is known to be incomplete, eg. in that the standard model parameters are arbitrary and derived from experiment rather than a priori. Experiments to test for physics beyond the standard model are...Go to contribution page
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Viacheslav Mishin (Institut for Spectroscopy RAS)18/11/2009, 16:30Although the selectivity of resonance ionization laser ion sources is high, nevertheless, it does not sufficiently large to carrying out many crucial experiments with radioactive isotopes particularly in studies of isotopes located very far from the valley of element stability. This report discusses the improved selectivity of the RILIS made possible by in-source time-of-flight ion...Go to contribution page
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Valentin Fedosseev (CERN)18/11/2009, 16:50At ISOLDE RILIS the resonance ionization of isotopes is provided by high pulse rate dye lasers. Until 2008 the dye lasers were pumped by copper vapor lasers built a long time ago in Russia. Following a plan for upgrade of the laser setup, two new 100W Nd:YAG lasers have been installed at RILIS. Operation of RILIS with the new pump lasers resulted in a noticeable improvement in the production...Go to contribution page
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Didier Voulot (CERN)18/11/2009, 17:10During 2009, REX has accelerated new particle types, and promising results have been obtained for the charge breeding of very heavy neutron-rich ion beams. These will be reported, as well as experience from the 2009 measurement campaign; results from the first tests with diamond detectors used as beam diagnostics; and the development work on a tilted foil set-up for the production of polarized...Go to contribution page
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Stefano Marzari (CERN)18/11/2009, 17:30A new design of Frontend has been developed at ISOLDE in view of replacing the existing and aging Frontends. Whilst maintaining compatibility with the present target design, new improvements and modifications have been incorporated into Frontend #6 and #7. These include simplified mechanics, a ceramic high voltage insulator, metallic joints, re-design of the beam optics, a rigid chassis and an...Go to contribution page
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Tim Giles (CERN)18/11/2009, 17:45In this talk I will present the features and optics of the new generation of Isolde frontends. A test stand for frontend #6 has been built and beam has been extracted from a target equipped with a standard Isolde ion source. I will show calculated tunes adapted for the GPS and HRS separators, and compare them with emittance measurements made on the test stand.Go to contribution page
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Karl Johnston (Universitaet des Saarlandes)18/11/2009, 18:00A consequence of a project to grow enriched material for a re-definition of the kilogram, optical spectroscopy on the resulting crystals has revealed many unexpected properties of supposedly well-known (and certainly well-studied) optical centres in Silicon. It has been shown that a dramatic reduction in linewidth of many deep luminescence centers in highly enriched 28Si can lead to the...Go to contribution page
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Maria J. G. Borge (Inst.de Estructura de la Materia)19/11/2009, 09:00The provision of high-intensity accelerated radioactive beams (RIB) is currently of high priority for the nuclear physics community World wide. ISOLDE has nowadays a vast variety of species produced, more than 1000 nuclei from almost 70 elements, the largest number by far of the existing ISOL-facilities. A key feature of the accelerated RIB at ISOLDE, REX-ISOLDE, is that essentially all...Go to contribution page
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Yacine Kadi (CERN)19/11/2009, 09:30The research with radioactive beams has strengthen the link between technical developments and physics output. The study of radioactive beams allows us to follow the evolution of nuclear structure over extended regions in the nuclear chart. ISOLDE has nowadays a vast variety of species produced, more than 1000 nuclei from almost 70 elements, the largest number by far of the existing...Go to contribution page
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Matteo Pasini (CERN)19/11/2009, 09:50The HIE-LINAC R&D phase has started in 2008 with the prototyping of the "high" beta SC QWR cavity and detailed beam dynamics studies. We report here on the latest achievement in term of the cavity prototyping, the results of the beam optics studies and a proposal for the beams lines for the future experimental facilities.Go to contribution page
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Richard Catherall (CERN)19/11/2009, 10:10The Design Study of the target area within the context of the HIE-ISOLDE project has been given a lower priority with respect to the upgrade of REX-ISOLDE to 10MeV/u. Nevertheless, first steps, considered as a pre-requisite to the upgrade of the ISOLDE target area, have been initiated. This includes radiation protection issues, Frontend modifications and remote handling. This talk will give a...Go to contribution page
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Greg Hackman (TRIUMF)19/11/2009, 11:00At TRIUMF-ISAC, high-power isotope separation on-line (ISOL), surface and resonant ionization, and linear heavy-ion accelerator technology provide radioactive beams of high intensity and low emittance. ISAC is complemented by a suite experimental facillities for research in nuclear astrophysics, nuclear structure, fundamental interactions and symmetries, and condensed matter research. ...Go to contribution page
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Joakim Cederkall (University of Lund)19/11/2009, 11:30Recent experiments at REX-ISOLDE as well as at fragmentation facilities, such as GSI and MSU, show an increased collectivity in the first 2+ state of the light Sn isotopes as compared to predictions from large scale shell model calculations. In this presentation we'll review some of the results and discuss recent measurements for the light Cd isotopes in view of a potential need for a...Go to contribution page
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Alexandrina Petrovici (National Institute of Physics and Nuclear Engineering (IFIN-HH)-)19/11/2009, 12:00The investigation of shape coexistence phenomena dominating the structure of A= 60 - 90 nuclei requires the framework of beyond mean-field approaches. We use the {\it complex} Excited Vampir variational approach to describe self-consistently the properties of proton-rich nuclei in this mass region. We study dynamical aspects of exotic nuclear structure using realistic...Go to contribution page
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Nick Bree (Inst. voor Kern- en Stralingsfysica - Katholieke Universiteit Leuven)19/11/2009, 12:20Since a clear shape dissimilarity in the ground state of light odd-mass mercury isotopes was observed by means of isotope shift measurements [1], shape coexistence in this mass region has been an intensively studied phenomenon by means of in-beam spectroscopy and decay spectroscopy. For light even-mass mercury isotopes, it has been advocated that a prolate band at low excitation energy is...Go to contribution page
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Achim Richter (Institut fuer Kernphysik,TU Darmstadt, D-64289 Darmstadt, Germany and ECT*, Villa Tambosi, I-38100 Villazzano(Trento), Italy)19/11/2009, 14:00Sufficiently flat microwave resonators ("microwave billiards") are well suited to study the quntum mechanical behavior of classically chaotic systems because of the formal equivalence of the respective wave equations, i.e. the Helmholtz and the Schroedinger equation. Using a superconducting 2-dimensional chaotic billiard ("stadium") as an example, it is shown that its spectral properties...Go to contribution page
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Marcus Beck (WWU Münster)19/11/2009, 14:30The WITCH experiment measures the energy spectrum of the recoil ions after nuclear beta decay. The radioactive ions are stored in Penning traps where they decay. The recoil spectrum is measured with a retardation spectrometer of MAC-E type. From the shape of the recoil spectrum the beta-neutrino angular correlation will be determined, with the goal to search for exotic interactions beyond the...Go to contribution page
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Fedor Simkovic (Comenius University)19/11/2009, 14:50Oscillations of two neutral atoms, which proceed with the violation of lepton number, is proposed. One of the neutral atoms is stable, the other one represents a quasistationary state subjected to electromagnetic deexcitation. The underlying mechanism is a transitions of two protons and two bound electrons to two neutrons $p+p+e^-_b+e^-_b \leftrightarrow n+n$. A phenomenological...Go to contribution page
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Esther Estevez Aguado (Instituto de Física Corpuscular (IFIC)-Universitat de València-U)19/11/2009, 15:10M. E. Estevez Aguado , A. Algora, J. Bernabeu, and B. Rubio (IFIC, CSIC-Uni. Valencia, Spain) Abstract: Neutrino oscillation studies have demonstrated that neutrinos have a mass and they mix. Next facilities will need pure, in flavour, and intense beams for very long-baseline experiments with massive detectors. The ultimate goal is the discovery and measurement of CP violation in the...Go to contribution page
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Luis M Fraile (UCM)19/11/2009, 16:00The measurement of absolute nuclear transition probabilities is a very sensitive tool to study the structure of the atomic nucleus. Direct access to transition rates can be achieved via the lifetime of nuclear levels de-populated in radioactive decay. The Advanced Time-Delayed (ATD) method, or Fast timing, is a well-established technique to measure lifetimes ranging from 5 ps to 50 ns with...Go to contribution page
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Magdalena Kowalska (CERN)19/11/2009, 16:30Penning traps are ideal tools not only for high-precision mass measurements, but also for isobaric and even isomeric beam purification. A system for beta- and gamma- spectroscopy installed behind the trap can be used for both assisting mass measurements and performing decay spectroscopy on pure samples in regions where contamination hampers standard measurements. Installing such a system at...Go to contribution page
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Kieran Flanagan (The University of Manchester)19/11/2009, 16:50The new Collinear Resonant Ionization Spectroscopy (CRIS) experiment aims to study the rarest isotopes produced at ISOLDE by using a combination of two techniques: resonant ionization spectroscopy (RIS) and collinear laser spectroscopy. The initial proposal will study the rare Francium isotopes. On the neutron-deficient side the role of the deformed (πs1/2-1)1/2+ intruder state will be...Go to contribution page
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Monika Stachura (University of Copenhagen, Faculty of Life Sciences)19/11/2009, 17:10Perturbed Angular Correlation of γ-rays (PAC) spectroscopy is a techinque routinely used in solid state physics. However, it has also proved to be a method that allows for studies of biological systems, such as local structure at metal ion binding sites, dynamics of protein folding or protein–protein interactions. In the present work we have selected some of the biological applications that...Go to contribution page
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Haraldur Gunnlaugsson (Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Århus C, Denmark)20/11/2009, 09:00Semiconductors, which are ferromagnetic at room temperature, are strived after as potential multifunctional materials. For ZnO, room temperature ferromagnetism has been achieved by doping with 3d transition metals making potential dilute magnetic semiconductors. However, contradicting results have been obtained and neither the conditions for, nor the origin of the magnetism are as yet...Go to contribution page
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Vítor Amaral (Departamento de Física e CICECO, Universidade de Aveiro)20/11/2009, 09:30The search for new systems that exhibit simultaneous ferroelectric and ferromagnetic orders have recently motivated Physic and Materials Science scientific communities to a meticulous research, that beyond searching the simultaneous electric and magnetic orders also have as an objective the maximization of its coupling. These materials offer the possibility to manipulate electrically the...Go to contribution page
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Ulrich Wahl (Instituto Tecnológico e Nuclear ITN)20/11/2009, 09:50During the SiC-W RILIS Mg run in September 2009 we managed to do first on-line emission channeling lattice location experiments using 27Mg (9.46 min) implanted into GaN and AlN. The room-temperature as-implanted beta- emission channeling patterns showed that the large majority of ion implanted Mg is incorporated on Ga or Al sites. While the detailed analysis of this experiment by means of...Go to contribution page
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Thomas Wichert (Technische Physik, Universität des Saarlandes)20/11/2009, 10:10It has been shown that the presence of an external Cd pressure effects the formation of so-called uphill diffusion profiles in CdTe around 800 K. This surprising diffusion behavior has meanwhile been demonstrated for the elements Ag, Cu, Au, and Na in radiotracer experiments using suited isotopes delivered by ISOLDE [1,2,3]. It has also turned out that uphill diffusion can also be initialized,...Go to contribution page
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Wolf Dietrich Zeitz (Helmholtz-Zentrum Berlin für Materialien und Energie GmbH)20/11/2009, 11:00Taking advantage of its unique supply of radioactive isotopes, groups of experimentalists apply nuclear techniques to investigate the properties of solids, surfaces, and soft matter at ISOLDE. The methods of choice are Moessbauer, perturbed angular correlation, and nuclear magnetic resonance spectroscopies. In addition to existing facilities, a set-up for the beta-NMR-technique has been...Go to contribution page
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P. Kessler (Helmholz-Inst. f. Strahl.- u. Kernp-Univ. Bonn, Physikalisches I)20/11/2009, 11:20Earlier PAC measurements with 111In in GaN and AlN show a defect complex of the implanted In and a nitrogen vacancy (VN) which is stable up to high temperatures. This could give insights in the not well understood luminescence mechanism. To gain more information about this complex we compared 111In(111Cd) with 111mCd(111Cd) measurements to check the possible influence of after effects that...Go to contribution page
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Rauno Julin (Department of Physics, University of Jyväskylä)20/11/2009, 11:40Light- and heavy ion beams from the K=130 cyclotron are used to produce nuclei far from stability at the Accelerator Laboratory of the Department of Physics of the University of Jyväskylä (JYFL), Finland. Novel instruments at the target and focal-plane areas of a gas-filled recoil separator for in-beam tagging measurements are available for probing structures of very neutron deficient and very...Go to contribution page
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Beyhan Bastin (Katholieke Universiteit Leuven-GANIL)20/11/2009, 12:10In the region around the Z=82 shell closure with neutron number around midshell between N=82 and N=126, shape coexistence occurs at low excitation energy. This phenomenon is well-established in the neutron-deficient polonium isotopes as evidenced by low-lying rotational like bands intruding in the low-energy structure. Proton-pair excitations across the magic Z=82 along with the strong...Go to contribution page
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Maxim Seliverstov (K.U. Leuven, Instituut voor Kern-en Stralingsfysica)20/11/2009, 12:30Shape coexistence at low excitation energy in nuclei is a phenomenon for which interest has been continuously growing on both the experimental and theoretical fronts. The region around the neutron mid-shell N = 104 and closed proton shell Z = 82 is especially prolific. The platinum isotope (Z = 78) ground states show a transition from the weakly deformed oblate shape at A < 176 and A > 188 to...Go to contribution page
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Lara Risegari (Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM)-91405 Orsay Campus, France)In a recent experiment at the NICOLE on-line nuclear orientation facility, gamma ray anisotropy and nuclear magnetic resonance measurements were made on Hf isomeric states. A HfF3 beam was used to implant separated Hf isotopes into a magnetized pure nickel foil cooled to temperatures down to ~10 millikelvin. A new NMR/ON resonance was observed in the 8- 180mHf isomer. Angular distribution...Go to contribution page
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