Riccardo Raabe
(Instituut voor Kern- en Stralingsfysica, K.U.Leuven)
25/11/2013, 13:40
Invited
Spectroscopic factors provide unique information on the structure of nuclei, and can be probed by direct reactions. Medium-energy knock-out reactions were the first direct reactions to be applied to the study of exotic nuclei about ten years ago. More recently the availability of post-accelerated ISOL beams has allowed the use of transfer reactions at various facilities like GANIL, TRIUMF,...
Marek Leslaw Pfutzner
(University of Warsaw (PL))
25/11/2013, 14:10
The Optical TPC detector has been developed to study the very rare and exotic decays with emission of charged particles.
The primary goal was to study in detail the 2p radioactivity, but the device was proven successful also in the beta-delayed particle spectroscopy. In the talk, the main results obtained for beta-delayed proton emission and for 2p radioactivity in the region of the doubly...
R. Lica
(IFIN-HH, Bucharest, Romania)
25/11/2013, 14:40
Submitted
The results of the IS530 experiment at ISOLDE revealed new information concerning several nuclei close to the N~20 'Island of Inversion' – 34Mg, 34Al, 34Si. The half-life of 34Mg was found to be three times larger than the adopted value (63(1) ms instead of 20(10) ms). The beta-gamma spectroscopy of 34Mg performed in this experiment for the first time led to the first experimental level scheme...
Gunvor Thinggaard Koldste
(Aarhus University (DK))
25/11/2013, 15:00
Submitted
The beta-delayed three-proton decay has so far only been observed in two nuclei: 45Fe [1] and 43Cr [2,3]. Pfützner et al. [4] recently discovered it from 31Ar and it has also been observed now in the analysis of the 31Ar decay-experiment IS476. The IS476 experiment gives the unique possibility to not just identify the decay, but to do spectroscopy on it. This is due to the good energy and...
Dr
Javier Menendez
(TU Darmstadt / EMMI)
25/11/2013, 15:20
Submitted
Calcium isotopes are ideal to explore the evolution of the nuclear shell structure from stability to the neutron-rich extremes, which have very recently become experimentally available.
From a theoretical point of view, calcium isotopes are also the frontier for calculations consistently including nucleon-nucleon (NN), and three-nucleon (3N) forces. In the framework given by
chiral...
Ronald Fernando Garcia Ruiz
(Katholieke Universiteit Leuven (BE))
25/11/2013, 15:40
Submitted
A program of bunched beam collinear laser spectroscopy at the COLLAPS beam line has recently focussed on the nuclear structure evolution around N = 32, in neutron rich K [1,2], Mn [3] and Ca [4] isotopes. The current results obtained from optical detection of calcium isotopes will be presented, in which hyperfine structures and isotope shifts were measured for the first time in 49,51,52Ca....
Jens Dilling
(triumf/UBC)
25/11/2013, 16:30
The ISAC program at TRIUMF focuses on nuclear physics, nuclear astrophysics, tests of fundamental symmetries using isotopes, and material science. I will give an overview of the present on-line ISAC system and developments, report on recent science highlights, and present plans and status of the new ARIEL facility. ARIEL is currently being built, and will ultimately provide multi-beam...
Ari Jokinen
(University of Jyvaskyla (FI))
25/11/2013, 17:00
Accelerator Laboratory in the Department of Physics, University of Jyväskylä has three disciplines, basic research in nuclear physics, accelerator-based material science and accelerator based commercial services. Those areas are using primary ion beams from three accelerators; K130 heavy ion cyclotron, MCC30 light ion cyclotron and Pelletron accelerator, all of them equipped by in-house...
Tomica Porobic
(Katholieke Universiteit Leuven (BE))
25/11/2013, 17:30
Submitted
One of the goals of precision measurements in nuclear beta decay is the search for deviations from the Standard Model that would point to new physics. Within the Standard Model, beta decay is described by the V-A theory but exotic contributions are experimentally not excluded with high precision. The primary aim of the WITCH experiment [1] at the ISOLDE/CERN facility is the precise...
Swapan K. Saha
(Bose Institute)
25/11/2013, 17:50
Submitted
Production of 7Li is linked to the production of 7Be, which in turn, is related to the reaction 3He + 4He --> 7Be + γ. Measuring this reaction rate is of utmost importance to shed light on 7Li abundance anomaly. A new approach to measuring the reaction rate could be measuring the reverse reaction of Coulomb dissociation of 7Be, preferably in the presence of a heavy target. A related...
Dr
Franck Delaunay
(LPC Caen, France)
25/11/2013, 18:10
Poster
The LPC Caen, in collaboration with CIEMAT (Madrid), is developing a new neutron time-of-flight array for structure studies, in particular the investigation of beta-delayed neutron emission from neutron-rich nuclei.
Our aim is an array with improved performance compared to existing arrays, with emphasis on better energy resolution, lower neutron energy threshold, and strong background...
Joao Martins Correia
(Universidade de Lisboa (PT))
25/11/2013, 18:10
Submitted
The interest and study of nanomaterials has grown considerably in recent years due to promising applications in everyday’s life technologies. With its relevance depending on tunable properties working at large-scale integration devices, a new battlefield is created since; small scale rules both new properties and new problems. By merging nanostructures with thin film technologies advantageous...
Kara Marie Lynch
(KU Leuven (BE))
25/11/2013, 18:10
Poster
The Collinear Resonance Ionization Spectroscopy (CRIS) experiment at ISOLDE uses laser radiation to stepwise excite and ionize an atomic beam for the purpose of ultra-sensitive detection of rare isotopes, and hyperfine structure measurements. The resonance ionization technique offers the ability to purify an ion beam that is heavily contaminated with radioactive isobars (including the ground...
Jin Woo Yoon
(RISP, Institute for Basic Science)
25/11/2013, 18:10
Poster
Development of the hot-cavity laser ion source is planned for the RISP ISOL facility to obtain pure ion beam. Recently, the laser system has been installed, and now the off-line test chamber is being designed. The laser system is composed of four tunable Ti:sapphire lasers (light sources for ionization), and one high power Nd:YAG laser (pump source of Ti:sapphire crystals). In the RISP ISOL...
Philippos Papadakis
(University of Jyvaskyla)
25/11/2013, 18:10
Poster
In-beam spectroscopic techniques have long been one of the most prominent tools in our effort to
disentangle and interpret complex nuclear structure phenomena. In heavy nuclei, where internal
conversion increasingly competes with γ-ray emission, the simultaneous study of γ rays and
conversion electrons can provide a much more complete image than either of them
independently.
The SPEDE...
Abel Eduardo Da Silva Fenta
(University of Aveiro (PT))
25/11/2013, 18:10
Poster
The one-atom-thick crystal - graphene, uniquely combines extreme mechanical strength, exceptionally high electronic and thermal conductivities, as well as many other exotic properties, all of which make it highly interesting for fundamental physics and numerous applications.
The aim of this work is to use radioactive ad-atoms attaching to graphene to investigate several aspects:
The first...
Y.K. Kim
(RISP, Institute for Basic Science)
25/11/2013, 18:10
Poster
Rare Isotope Science Project (RISP) aims to construct world-class Rare Isotope Facility named “RAON” consisting of both Isotope Separation On-Line (ISOL) and In-flight Fragment (IF) facilities. The main goal of the ISOL facility is to deliver high quality intense neutron-rich beams to the experimental hall with a beam intensity of ~105–109 particles/sec in the mass range of 80 < A < 160, using...
Jasna Papuga
(Katholieke Universiteit Leuven (BE))
25/11/2013, 18:10
Poster
Collinear laser spectroscopy provides a powerful high-resolution method for the investigation of the nuclear structure of the exotic nuclei. In combination with bunched ion beams a very high sensitivity can be reached. The hyperfine spectra of 48-51K (Z = 19) isotopes were observed at ISOLDE (CERN) for the first time. For this purpose, the CW laser was set to the 4s 2S1/2 → 4p 2P1/2 transition...
Dr
Ângelo Costa
(C2TN/IST)
25/11/2013, 18:10
Poster
SiC is a wide band gap semiconductor with an increasing number of applications in high-temperature electronics. Similar to Si, transition metals (TMs) in SiC are the source of deep levels in the band gap, however, the knowledge on structural properties of TMs in SiC, such as possible lattice sites, is much less advanced. In this work we report first results on the lattice site location of...
Robert Christian Mertzig
(Technische Universitaet Dresden (DE))
25/11/2013, 18:10
Poster
During LS1 an incremental upgrade of the REX-ISOLDE charge breeder along with its regular maintenance is foreseen. The goal is to increase the ion acceptance, pulse frequency and intensity by minor changes in the electron optics and operation settings.
In this contribution we present a complete simulation of the electron beam transport through the entire EBIS. Reliable results can be...
Matthias Nagl
(Uni-Göttingen)
25/11/2013, 18:10
Poster
The ability of digital TDPAC spectrometers to process high count rates while providing flexible gating and evaluation options provides new opportunities for online measurements. In order to allow for online TDPAC measurements at ISOLDE, a specialized online TDPAC chamber will be build for the GLM branch.
We will present the concept of this chamber alongside first results of an online TDPAC...
Dr
Sarah Naimi
(MPIK)
25/11/2013, 18:10
Poster
The next generation of Rare Isotopes facilities, such as SPIRAL2, HIE-ISOLDE, FAIR, RIBF aims to push further the borders of our knowledge about fundamental properties of exotic nuclei. To do so, these facilities require a production of high quality beam that is adapted to the needs of various experiments.
Besides production mechanisms, mass separation techniques are crucial for the...
Marco Rosenbusch
(Ernst-Moritz-Arndt-Universitaet (DE))
25/11/2013, 18:10
Poster
The mass is a unique property of an atomic nucleus, reflecting its binding energy and thus the sum of all interactions at work in the atom. Precise measurements of nuclear masses, especially of short-lived exotic nuclides with extreme proton-to-neutron imbalance, provide important input for nuclear structure and nuclear astrophysics investigations, for tests of the Standard Model, and for weak...
K. Tshoo
(RISP, Institute for Basic Science)
25/11/2013, 18:10
Poster
Rare Isotope Science Project (RISP) was launched by Institute for Basic Science (IBS) in December 2011 in Korea. We are developing Isotope Separation On-Line (ISOL) target system, which consists of 1.3 mm-thick uranium-carbide multi-disks and cylindrical tantalum heater, to provide various rare isotope beams for the researches in basic science and application. The intense neutron-rich nuclei...
Dmitry Kisler
(Max-Planck-Gesellschaft (DE))
25/11/2013, 18:10
Poster
One of the main goals of modern experimental nuclear physics is studying exotic nuclides far from the valley of stability of the nuclear chart. Measuring the mass of these nuclides allows gaining knowledge about the nuclear forces keeping nuclides bounded and about the resulting nuclear structure. ISOLTRAP is the Penning-trap mass spectrometer situated at ISOLDE-CERN used for high-precision...
Yacine Kadi
(CERN)
26/11/2013, 09:00
Invited
The HIE-ISOLDE project represents a major upgrade of the ISOLDE facility with a mandate to significantly improve the quality and increase the intensity and energy of radioactive nuclear beams produced at CERN. The focus of the upgrade is a 40 MV superconducting linac to increase the beam energy from 3 MeV/u to over 10 MeV/u, and which is based on thirty-two niobium sputter-coated quarter-wave...
Andrey Shornikov
(CERN)
26/11/2013, 09:30
Submitted
To take full advantage of the HIE-ISOLDE upgrade and to make possible all experiments with TSR@ISOLDE a new charge breeder in the ISOLDE reacceleration branch is required. In this contribution we would like to raise the awareness of the user community on how charge breeding at ISOLDE can affect their experiments, outline the new opportunities and define the limits. The ultimate goals of the...
Fredrik John Carl Wenander
(CERN)
26/11/2013, 09:50
Invited
The goal of TSR@ISOLDE initiative is to place the Test Storage Ring (TSR) from MPI-K, Heidelberg, after the HIE-ISOLDE linac to perform experiments with stored exotic nuclides. With the integration of TSR at HIE-ISOLDE it would become the first storage ring at an isotope separator on-line facility. A substantial fraction of the vast number of radioactive beams produced at the ISOLDE facility...
Matthew Alexander Fraser
(CERN)
26/11/2013, 10:20
Invited
A status report covering recent design and machine development studies for the HIE-ISOLDE linac will be presented. The presentation will be focused on the design and specification of the 10 MHz bunching system to provide beams with an increased bunch spacing of ~100 ns. The feasibility of chopping the `unbunched' background created during the bunching process will be demonstrated. Other...
Richard Catherall
(CERN)
26/11/2013, 11:10
Invited
The On-Line Isotope Mass Separator ISOLDE [1] is a facility dedicated to the production of a large variety of radioactive ion beams (RIB) for a great number of different experiments. Over 1000 radioactive nuclides from 70 elements can be produced in thick high-temperature targets via spallation, fission or fragmentation reactions with the PS-Booster pulsed proton-beam. With the arrival of...
Bruce Marsh
(CERN)
26/11/2013, 11:30
Invited
The Resonance Ionization Laser Ion Source (RILIS) is the most frequently used ion source at ISOLDE because it offers unmatched selectivity and high reliability without compromising the yield of the isotope of interest. Additional benefits such as isomer selectivity, laser on/off based beam diagnostics and low emittance have proven essential for many experiments. To date, ionization schemes for...
Christoph Seiffert
(T)
26/11/2013, 11:50
Invited
The presentation will give an overview of the status of current activities and developments in the ISOLDE target and ion source group. Besides the characterisation of widely used target materials, activities focus on the improvement of such in order to provide high yields of desired isotopes over extended periods. Moreover the work on new target designs such as the molten salt targets will be...
Jan Pawel Kurcewicz
(CERN)
26/11/2013, 12:10
Invited
An overview of the Data Acquisition Systems available for non-permanent experiments will be presented.
Susanta Lahiri
(Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India)
26/11/2013, 12:30
Submitted
In the planning of the EURISOL (European Isotope Separation On-Line) facility at CERN, the use of liquid Hg or Lead Bismuth Eutectic (LBE) was proposed as proton to neutron converter. The study on the impact of high energy protons (~1-1.5 GeV) on the liquid Hg has already been carried out; however, handling of tons of liquid Hg has some practical difficulty, which may be overcome using LBE...
Alexandra Gade
26/11/2013, 14:00
The US gamma-ray tracking array GRETINA just completed its first science campaign at the NSCL(MSU). An overview will be presented, showing selected results covering broad topics from nuclear structure physics and nuclear astrophysics. A brief summary of the FRIB status will be given.
Elisa Rapisarda
(CERN)
26/11/2013, 14:30
Invited
Studying the region around the doubly magic nucleus 78Ni with the Z=28 and N=50 shell closures is particularly interesting for testing the validity of the contemporary nuclear models and for unraveling new aspects of the interactions used in these models. Especially the evolution of single-particle and collective phenomena between the harmonic oscillator shell closure at N=40 and the shell...
Magdalena Zielinska
(CEA/IRFU,Centre d'etude de Saclay Gif-sur-Yvette (FR))
26/11/2013, 15:00
Submitted
Shell evolution in the vicinity of 68Ni has recently attracted many theoretical and experimental investigations. By now it has been clearly established that the presumed subshell closure at N=40 is not very pronounced. While the intruder character of the 1g9/2 and 2d5/2 neutron orbital induces collectivity by pair excitations from the fp shell into the g9/2 orbital, the parity change hinders...
Mrs
Stefanie Hellgartner
(Technical University of Munich)
26/11/2013, 15:20
Submitted
The standard Coulomb Excitation setup at MINIBALL uses a forward CD at fixed distance to the target, only. We built a new setup, based on the T-REX design, to allow a variable distance of the forward CD as well as to cover backward angles in the laboratory frame. This allows to use high intense beams and gives better insight into multiple coulomb excitation studies. Multiple coulomb excitation...
Prof.
Henryk Mach
(NCBJ, Warsaw, Poland)
26/11/2013, 15:40
Submitted
There is a strong interest in the properties of the exotic doubly magic 78Ni. 78Ni itself is at the edge of the experimental reach, thus most of the experiments concentrate on its very close neighbors located North and North-East, as well as South-West, which can be studied in some detail. This presentation provides an overview of the current status of the fast timing experiments IS441 and...
Prof.
Costel Petrache
(University Paris Sud and CSNSM, CNRS/IN2P3, Orsay, France)
26/11/2013, 16:00
Submitted
The 160Yb nucleus (Z=70 and N=90) is double-magic with respect to the predicted Tetrahedral symmetry. Even if already studied in heavy-ion induced reactions, neutron spallation and β+-decay, the non-yrast low-spin states and their properties are not well known. In particular it is not clear if a 3- state exists in 160Yb, which could belong to the tetrahedral band. We propose to study the...
Gabriel Martinez-Pinedo
26/11/2013, 16:50
In this talk I will review recent advances in the description of the structure of exotic nuclei and their impact in supernova evolution and explosive nucleosynthesis.
Dr
Alex Murphy
(University of Edinburgh)
26/11/2013, 17:20
The most massive stars of the Universe suffer the fate of core collapse. Despite much recent progress, the underlying mechanism that allows such stars to subsequently explode is still not fully understood. A satellite based gamma-ray observation of the isotope 44Ti may hold the key to resolving this problem. The amount of this isotope in stellar ejecta, available for detection, is thought to...
Jean-Marc Triscone
(DPMC, University of Geneva)
27/11/2013, 09:00
Oxide materials display within the same family of compounds a variety of exciting electronic properties ranging from ferroelectricity to ferromagnetism and superconductivity. These systems are often characterized by strong electronic correlations, complex phase diagrams and competing ground states. This competition makes these materials very sensitive to external parameters such as pressure or...
Haraldur Gunnlaugsson
(Aarhus University)
27/11/2013, 09:30
Submitted
TiO2 has a wide range of applications. It is used as pigments in paints, sunscreen and food products, and as a photocatalyst, where doping by ion-implantation has been found useful to tailor the photocatalytic properties. TiO2 is used as a host for the upconversion process and in recent years there have been reports on dilute magnetism in this system, where the charge state of Fe is of...
Mr
Gonçalo Oliveira
(CFNUL-Centro de Física Nuclear, Universidade de Lisboa, Av. Prof. Gama Pinto, 2, 1649-003, Lisboa, Portugal & IFIMUP and IN-Institute of Nanoscience and Nanotechnology, Departament of Physics and Astronomy of FCUP, University of Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal)
27/11/2013, 09:50
Submitted
Magnetoelectric materials experience a renewed interest due to its enhanced multifunctional properties, which are extremely appealing for technological applications into memories that could be written electrically and read magnetically or vice-versa [1,2]. Such properties can be affected by local distortions at the atomic scale, therefore requiring understanding the role of the local, polar...
Daniel Da Silva
(IFIMUP and IN-Institute of Nanoscience and Nanotechnology, Departamento de Física e Astronomia da Faculdade de Ciências da Universidade do Porto, Portugal)
27/11/2013, 10:10
Submitted
Although vacancy-type defects are known to getter transition metals (TMs) in silicon, detailed information on their interaction, e.g. the lattice sites occupied by the TM trapped in the defects, is still poor. Emission Channeling (EC) is a technique that allows us to obtain the preferred sites of the TMs inside these vacancy-type complexes by implanting single crystals with radioactive probe...
Thierry Stora
(CERN)
27/11/2013, 11:00
Invited
About 50% of the 1.4GeV CERN’s protons are sent onto targets to produce radioactive beams by online mass separation at ISOLDE, for a wide range of studies. As reported at the last Isolde users workshop, CERN-MEDICIS is a spin-off dedicated specifically to R&D in life sciences and medical applications. It is located in an extension of the Class A building presently under construction. It will...
Lars Hemmingsen
(U)
27/11/2013, 11:30
Submitted
Application of perturbed angular correlation (PAC) of γ-rays spectroscopy in coordination chemistry and biochemistry is well established [1]. Over the past few years we and our collaborators have applied this technique to elucidate structure and dynamics at metal sites in proteins. In addition, we have applied quantum chemical methods to explore how the spectroscopic properties are affected by...
Dr
Attila Jancso
(University of Szeged (HU))
27/11/2013, 11:50
Submitted
Metalloregulatory proteins are key elements of bacterial metal homeostasis and resistance regulating the metal ion transport/storage/detoxification systems at a transcriptional level. The copper-efflux regulator CueR belongs to the MerR protein family the members of which are dimers and all possess a characteristic short metal binding domain close to the C-terminus of each monomer. The...
Johannes Lehnert
(Experimentalphysik, Universität des Saarlandes, 66123 Saarbrücken, Germany)
27/11/2013, 12:10
Submitted
Radiotracer experiments are the most sensitive tool for the study of diffusion phenomena in solids. At ISOLDE/CERN diffusion experiments have been performed using 111-Ag delivered for implantation by ISOLDE.
It has been shown that in CdTe 111-Ag exhibits the phenomenon of uphill diffusion, which under suitable conditions (800 K, 60 min, Cd-pressure) results in the formation of symmetric...
Monika Stachura
(CERN)
27/11/2013, 12:30
Submitted
The planned upgrade of the RB0 line at ISOLDE, currently hosting the ASPIC apparatus, will be presented. The newly designed UHV beam line – reborn as the VITO experiment – will have three end stations allowing for carrying out versatile and multidisciplinary experiments: the ASPIC end station, the β -NMR end station and at a later stage an open station for traveling experiments. The major...
Prof.
Peter Butler
(University of Liverpool (GB))
27/11/2013, 14:00
Invited
In this talk I will describe how recent experiments carried out at REX-ISOLDE at CERN have found new examples of reflection asymmetry in heavy nuclei. I will discuss how the new measurements are constraining nuclear theory and how they can contribute to tests of extensions of the Standard Model.
Lorenz Willmann
(University of Groningen/ NL)
27/11/2013, 14:30
Searches for violations of the fundamental discrete symmetries parity (P), time reversal (T) and charge conjugation (C) are of outmost importance for the model building in physics and looking beyond the Standard Model of the electroweak interactions (SM). Permanent electric dipole moments (EDMs) are particularly sensitive probes to look for minute violations with a robust discovery potential....
Dr
Simone Bottoni
(Università degli Studi e INFN Milano (IT) & KU Leuven (B))
27/11/2013, 15:00
Submitted
We report on an exploratory experiment performed with MINIBALL coupled to T-REX [1-2], to investigate neutron-rich Sr and Y nuclei around mass A = 100, by cluster transfer reactions of neutron-rich 98Rb/98Sr beams on a 7Li target. The aim of the experiment was on one hand to perform a gamma-spectroscopy study by transfer reactions of
neutron-rich Sr and Y nuclei beyond N=60 populated, so far,...
Malin Linnea Klintefjord
(University of Oslo (NO))
27/11/2013, 15:20
Submitted
The open-shell nuclei with Z>50 and N<82 are known to have some of the largest ground- state deformations in the nuclear chart. The shape of the nuclei in this region are expected to be prolate, except for a small island of nuclei with Z>62 and N≈78, which are predicted to be oblate. Nuclei near 140Sm are therefore expected to be located in a transitional region between deformed and spherical...
Dinko Atanasov
(Max-Planck-Institute for Nuclear Physics (DE))
27/11/2013, 15:40
Submitted
The ISOLDE Penning-trap mass spectrometer ISOLTRAP has constantly been subject to state-of-the-art upgrades pertaining to one of the world’s leading Penning-trap mass spectrometers. The current setup of ISOLTRAP consists of four ion traps [1]. The linear segmented radio-frequency quadrupole is used for ion-beam accumulation, cooling and bunching. Afterwards, the ion bunch is transferred to a...
Kieran Flanagan
(University of Manchester (GB))
27/11/2013, 16:20
High-resolution optical measurements of unstable atoms provides some of the most fundamental nuclear properties: spin, nuclear moments, mean-square charge radii. The simple fact that an observation of an optical resonance has been made, confirms the existence of a new nuclide or long-lived nuclear state. By performing systematic measurements across isotope chains it is possible to elucidate...
Dr
Stephanie Roccia
(CSNSM Universite Paris Sud IN2P3 CNRS)
27/11/2013, 16:50
Submitted
Low temperature on-line nuclear orientation is a technique dedicated to the study of the decay of polarized exotic nuclei. A He3-He4 dilution refrigerator provides very low temperature (~10 mK) allowing nuclei to reach a large degree of polarization in the hyperfine field which exists at nuclei implanted into a ferromagnetic metal host. The decay products can be observed using proton, alpha or...
Ivan Budincevic
(Katholieke Universiteit Leuven (BE))
27/11/2013, 17:10
Submitted
The physics results on the neutron rich 218m,219,229,231Fr isotopes from the Collinear Resonance Ionization Spectroscopy (CRIS) experimental run in October 2012 at ISOLDE, will be presented. These isotopes are located on the borders of the actinide region in which nuclei are known to posses reflection asymmetric shapes. 218g,219Fr have previously been interpreted as octupole vibrational...
