Event calendar file
6-8 February 2006
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Session:
Opening Session
I will discuss the present status of the theoretical description
of very neutron rich nuclei with particular emphasis in the subshell
closures at N=20, 28, 32 and 34.
Presented by Prof. Alfredo POVES
on
6 Feb 2006
at
14:40
Session:
Nuclear Physics IV
This project involves two main components, namely the development of a ISOLDE
production target (or targets) for the release of short-lived proton and/or neutron-
rich aluminum isotopes, and to subsequently to use such beams, e.g. 25,26mAl to
initiate a program in nuclear astrophysics using REX-ISOLDE involving particle
transfer reactions and elastic/inelastic scattering reactions. Of parti
... More
Presented by Prof. John D'AURIA
on
8 Feb 2006
at
16:40
Session:
Technical Developments II
Diverse data, such as yields, release curves or target ageing, have been collected
for the last fifteen years at ISOLDE. We are now improving the procedure for their
acquisition, storage and access. The measurements will be performed by an automatic
application that controls the hardware settings and record data according to
predefined parameters. A dedicated database with different access
... More
Presented by Mr. Martin ELLER
on
8 Feb 2006
at
12:05
Session:
Technical Developments I
At ISOLDE, different charge breeding techniques are investigated with both an EBIS
and an ECR charge breeder. The REXEBIS is an operational machine since three years,
running as the central part of the beam preparation stage of the REX-ISOLDE post-
accelerator. A 14 GHz Phoenix ECR charge breeder is currently being tested in one
of the beam line of the General Purpose Separator (GPS). Accor
... More
Presented by Dr. Pierre DELAHAYE
on
7 Feb 2006
at
15:05
Session:
Nuclear Physics II
Recent studies on isotopes around the shell closure N=82 have shown that despite
decreasing excitation energies the B(E2) values of Sn and Te isotopes above
N=82 are lower than expected. The aim of our experiment was to measure B(E2) values
in neutron-rich even-even isotopes around the double magic 132Sn. In a first campaign
in 2004 we measured the gamma transitions of 122-126Cd. In 2005 we us
... More
Presented by T. BEHRENS
on
8 Feb 2006
at
09:45
Session:
Nuclear Physics II
Levels of (6,3,4,5)- multiplet in 68,70Cu were populated by Coulomb excitation
using 6- radioactive beams delivered by REX-ISOLDE. B(E2)/B(M1) reduced transition
probabilties can be extracted and information about the single particle structure
of the multiplet can be obtained.
Presented by Dr. Irina STEFANESCU
on
8 Feb 2006
at
09:00
Session:
Technical Developments II
Exotic radionuclides such as for instance 44-Ti, 60-Fe, 26-Al, 10-Be and many others
are of great interest in several research domains like astrophysics, nuclear
medicine, geophysics, fundamental nuclear physics or radioactive beam facilities.
The production of all these nuclides in sufficient amounts is very time consuming
and extremely expensive. Conventional techniques in commercial radi
... More
Presented by Dr. Dorothea SCHUMANN
on
8 Feb 2006
at
11:45
Session:
Technical Developments II
Off- and on-line experiments within the TARGISOL project will be presented and
resulting recent and future improvements of ISOLDE beams will be discussed.
Presented by Ulli KOESTER
on
8 Feb 2006
at
11:25
Session:
Solid State Physics
Understanding and control of diffusion profiles of intrinsic and extrinsic defects in
semiconductors is of central importance for developing electronic and optoelectronic
devices. Common to all diffusion profiles in semiconductors reported so far is the
monotonously decreasing depth profile if the source of the diffusing species is
located at the surface of the crystal. In compound semiconduct
... More
Presented by Frank WAGNER
on
7 Feb 2006
at
17:50
Session:
Nuclear Physics IV
A gas can be a good alternative to a solid or liquid to catch, store and
transport radioactive ions, especially for short-living species and/or
isotopes from refractory elements. A short overview of the evolution in gas
catchers will be given. Then the different processes taking place in
gas-catchers and influencing the overal behavior will be discussed. The
contribution will end by a critic
... More
Presented by Prof. Mark HUYSE
on
8 Feb 2006
at
16:10
Session:
Technical Developments I
The physics community that use radioactive ion beams, estimated to be about one
thousand in Europe alone, requires diversity of ions species, diversity of beam
energy, and high beam intensities. REX-ISOLDE already provides the first of these;
the aim of HIE-ISOLDE is to achieve the second and the third. This requires
developments in post-acceleration (the present energy restricts the appli
... More
Presented by Mats LINDROOS
on
7 Feb 2006
at
14:15
Session:
Information
ISOLDE users can since 2005 benefit from the transnational
access program through EURONS (EC FP6). A few important
practical points will be summarized.
Presented by Dr. Karsten RIISAGER
on
7 Feb 2006
at
09:00
Session:
Solid State Physics
The Pr1-xCaxMnO3 displays a variety of phase transitions associated with the spin,
lattice, charge and orbital degrees of freedom [1],[2]. PrMnO3 and CaMnO3 are
antifeerromagnetic, and low doped (x<0.32) samples are ferromagnetic below Tc~130K.
For 0.32<x<0.90 the system presents a robust Charge Order state (CO) for
temperatures below TCO~150-235 K and an antiferromagnetic insulator state
... More
Presented by Vitor AMARAL
on
7 Feb 2006
at
16:55
Session:
Solid State Physics
Strontium-titanate is a perovskite ceramic material, which is of interest, e.g.,
for future devices based on metal-oxide Si heterostructures such as high-k field
effect transistors. The electrical, optical and magnetic properties of SrTiO3 can
be modified by the incorporation of dopants. For instance, transition metal doped
SrTiO3 has been considered as a candidate for a room-temperature f
... More
Presented by A.C. MARQUES
on
7 Feb 2006
at
17:15
Session:
Nuclear Physics III
There is much ongoing experimental and theoretical interest
surrounding nuclei in the $A=70$ region of the nuclear chart. A
definitive measurement of the reorientation matrix element of the
first 2+ state in 70Se would provide information on the
nature of shape coexistence in this nucleus. Preliminary results
following the Coulomb excitation of a radioactive beam of 70Se at
2.94 MeV/u obta
... More
Presented by Mr. Aaron HURST
on
8 Feb 2006
at
15:30
Session:
Nuclear Physics III
The replacement of the N=20 spherical shell gap in nuclei of the island of inversion
by the N=14,16 gaps can be explained by the tensor monopole interaction between the
proton and neutron Fermi levels. The next step in understanding the evolution of
shell structure is to measure the strengh of this interaction, which is present
throughout the nuclear chart. The ideal tool for this are tran
... More
Presented by Serge FRANCHOO
on
8 Feb 2006
at
14:30
Session:
Nuclear Physics I
Our research on the neutron rich side of the Mg chain will be presented, which is of
interest in the frame of understanding nuclear structure in the region of
the “Island of inversion”. Nuclei around 32Mg exhibit properties in disagreement
with the standard shell model. Advanced modeling of the region requires experimental
data, crucial parts of which are the nuclear moments data. The
... More
Presented by Deyan D. YORDANOV
on
7 Feb 2006
at
11:55
Session:
Technical Developments I
The EURISOL is set to be the ‘next-generation’ European Isotope Separation On-Line (ISOL) Radioactive Ion
Beam (RIB) facility, extending and amplifying beyond the year 2010 the research being performed at the
present RIB facilities in Europe and elsewhere, in the fields of Nuclear Physics, Nuclear Astrophysics and
Fundamental Interactions.
The proposed ISOL facility will include several
... More
Presented by Dr. Yacine KADI
on
7 Feb 2006
at
15:25
Session:
Nuclear Physics I
Light nuclei near the neutron drip-line have been studied intensively since the
discovery
of halos in this region. The complexity of their decays represent a great task for both
theoretical and experimental nuclear physics. The 11Li, the nucleus studied in this work,
exhibit a complex beta decay. The high Q-beta value (20.6 MeV) and the low nucleon
binding energy
in the neighbour nuclei
... More
Presented by Mr. Miguel MADURGA FLORES
on
7 Feb 2006
at
12:35
Session:
Nuclear Physics IV
The origin in the cosmos of the so-called p nuclei is one of the most puzzling
tasks to be solved by any model of heavy-element nucleosynthesis. These nuclei are
by-passed by the s- and r-process pathways. To date, these nuclei have been
observed only in the solar system. Understanding the synthesis of these p-process
nuclei on the basis of astrophysical processes occurring outside the sol
... More
Presented by Dr. Sotirios HARISSOPULOS
on
8 Feb 2006
at
17:10
Session:
Nuclear Physics II
The nuclear moments are an important ingredient of our nuclear structure
knowledge. Their contribution is crucial when one discusses the
development of the nuclear shells far from stability. However, presently
there are no techniques that can be directly applied for the studies of
short-lived isomeric states produced by ISOL beams. Some ideas about the
use of post-accelerated radioactive beam
... More
Presented by Dr. Georgi GEORGIEV
on
8 Feb 2006
at
10:25
Session:
News from other Laboratories
The availability of radioactive beams at GANIL produced
through both the projectile fragmentation (SISSI) and ISOL (SPIRAL)
techniques have fostered the development of a broad programme of reaction
studies. The subject will be illustrated with results from elastic,
inelastic, transfer and fusion studies. Topics will include the influence
of weakly bound neutrons on direct and compound reactio
... More
Presented by Prof. Yorick BLUMENFELD
on
7 Feb 2006
at
09:10
Session:
News from other Laboratories
The TUDA facility (TRIUMF UK Detector Array) consists of a silicon strip array for
the study of charged particle reactions of astrophysical interest in inverse
kinematics. TUDA addresses the challenges presented by investigating such
reactions, using both direct and indirect techniques. In particular, the low
energies and low cross sections involved require the use of highly segemented,
... More
Presented by Dr. Alison LAIRD
on
7 Feb 2006
at
10:10
Session:
Nuclear Physics I
Atomic nuclei at low excitation energy are characterized by the motion of pairs of nucleons, known as Cooper
pairs, moving in time reversed orbitals. This picture becomes much more complicated as Cooper pairs are
broken by collective (Coriolis force) or intrinsic (temperature) excitations. In this talk we will focus on the
statistical properties of the system as function of the number of exc
... More
Presented by Prof. Magne GUTTORMSEN
on
7 Feb 2006
at
11:00
Session:
Opening Session
Since the discovery of parity violation in beta decay, Parity Non-Conservation (PNC)
in bound nuclei has provided a means to address the parity violating term in the
nuclear Hamiltonian due to the weak interaction component. The few cases identified
as promising ones have been studied but showed marginal or no effects.
In the case of 180Hf(8-) isomer, the PNC effect was studied nearly fou
... More
Presented by Micha HASS
on
6 Feb 2006
at
14:10
Session:
Nuclear Physics III
Two-neutron transfer reactions offer the possibility to study pairing correlations,
shape coexistence and other strcutural issues in nuclei. Our recent development of a
tritium target opens the possibility to perform (t,p) reactions in inverse kinematics
at REX-ISOLDE with beam intensities as low as approx. 10^5 pps. In this talk I will
report on results of recent transfer experiments in inver
... More
Presented by Prof. Reiner KRüCKEN
on
8 Feb 2006
at
14:00
Session:
Trapping for Nuclear Physics
At LPC Caen, a magnetic optical trap (MOT) has been developed for the trapping of
Rb atoms. This device is a powerful tool for atomic physics studies when used in
combination with the well-established Recoil Ion Mass Spectrometry method
(MOTRIMS). At ISOLDE, this kind of trap could be used for the trapping of
radioactive Rb, and possibly of radioactive K and Li atoms with a slightly modifi
... More
Presented by Dr. Amine CASSIMI
on
6 Feb 2006
at
17:20
Session:
Trapping for Nuclear Physics
A facility for the study of francium atoms is operating at the INFN Laboratories in Legnaro (LNL). Data on
production, transport and trapping is presented. Possible future developments at Legnaro and ISOLDE are
discussed.
Presented by Dr. Giulio STANCARI
on
6 Feb 2006
at
17:35
Session:
Trapping for Nuclear Physics
A measurement of the optical isotope shift in beryllium isotopes will allow a
model-independent determination of the nuclear charge radius of Be-7,9,10 and the
halo nucleus Be-11. This is based on an accurate calculation of the mass-dependent
part of the isotope shift in the respective transition, combined with a precise
measurement of the total isotope shift. Both values must be determined wi
... More
Presented by Dr. Wilfried NöRTERSHäUSER
on
6 Feb 2006
at
16:00
Session:
Technical Developments I
Operation and development in 2005:
REX- ISOLDE (the radioactive beam experiment at ISOLDE) has now been approved as a
CERN facility. A number of tasks are underway to improve its operation and
reliability. Already 2005 has been a very successful campaign with a record number
of RIBs accelerated and delivered to the two experimental targets: 15 different
isotopes have been accelerated at e
... More
Presented by Didier VOULOT
on
7 Feb 2006
at
14:45
Session:
News from other Laboratories
Nuclear structure studies at GSI gained recently an increased interest for the
present activities as well as for the future project FAIR. A broad range of
physical phenomena can be addressed by high-resolution in-beam γ-ray spectroscopy
measurements with radioactive beams offered within the Rare ISotopes INvestigation
at GSI (RISING) project. It combines the EUROBALL Ge-Cluster detectors,
... More
Presented by Dr. Magdalena GORSKA
on
7 Feb 2006
at
09:40
Session:
Technical Developments II
Results obtained with prototypes comprising a graphitic line or a quartz insert
will be presented. They will be complemented with data on halogen beams produced
this year at ISOLDE with a LaB6 negative surface ion source. In a second part, I
introduce how simulation and experimental tools recently acquired in the section
are used for new developments for ISOLDE and EURISOLDS.
Presented by Thierry STORA
on
8 Feb 2006
at
11:05
Session:
Nuclear Physics I
The laser ion source has been used for the study of the isotope shifts of neutron
deficient Eu and Gd isotopes at the IRIS facility. The region of the applicability
of the method by using the gamma- and beta- radiation detection has been extended.
The isotope shifts of the europium optical line 576.520 nm for 137–139, 141, 142m,
143, 144 Eu and the gadolinium optical line 569.622 nm for
... More
Presented by Anatoly BARZAKH
on
7 Feb 2006
at
12:15
Session:
Nuclear Physics II
Shape-coexisting states in neutron-deficient krypton isotopes
have been studied by low-energy multi-step Coulomb excitation
of radioactive 74Kr and 76Kr beams at GANIL. States up to the
8+ in the ground-state band and several non-yrast states have
been populated, and their excitation probability was measured
as a function of the scattering angle. A large set of both
transitional and diagona
... More
Presented by Andreas GOERGEN
on
8 Feb 2006
at
10:05
Session:
Nuclear Physics III
Transfer reactions yield important spectroscopic information about isotopes,
including spin and parity assignments to nuclear levels and spectroscopic factors.
The corresponding information is still lacking for many nuclei far from stability.
The results from transfer experiments with neutron rich Na and Mg isotopes in inverse
kinematic with the MINIBALL setup at REX-ISOLDE will be presented
... More
Presented by Vinzenz BILDSTEIN
on
8 Feb 2006
at
14:50
Session:
Solid State Physics
Solid state physics at ISOLDE aims at the study of the structural, electrical,
optical, magnetic and transport properties related to impurities in a variety of
technologically and fundamentally relevant materials, including semiconductors,
metals, high-Tc superconductors and ceramic oxides.
This talk will give an overview on the recent ISOLDE activities in this field,
including
- latti
... More
Presented by Dr. Ulrich WAHL
on
7 Feb 2006
at
16:25
Session:
Nuclear Physics I
Laser spectroscopy gives access to fundamental properties of the ground and rather
long-lived isomeric states such as the change in the mean square charge radius (
) and the nuclear moments. Measurements on tellurium isotopes (Z = 52) can provide
reliable information on the shape of nuclei, structure of states, and effects of
dynamics. Indeed from A = 115 to 133, all the odd-A Te
... More
Presented by Brigitte ROUSSIERE
on
7 Feb 2006
at
11:30
Session:
Solid State Physics
We present a progress report of lattice sites and collective ordering studies of
dopant oxygen atoms in HgBa2CaCu2O6.26 (Hg1212) samples with the perturbed angular
correlation technique, PAC. By measuring electric field gradients (EFG) at 199mHg
nuclei, information for characterizing the oxygen atoms, Oδ, which go to the Hg-
planes and dope the superconducting CuO2 planes with double-hole
... More
Presented by T. M. MENDONçA
on
7 Feb 2006
at
17:35
Session:
Technical Developments I
A new Radio Frequency Quadrupole ion Cooler and Buncher (RFQCB) has been designed
and manufactured at ISOLDE for the installation after the High Resolution Separator
(HRS) as a quasi-permanent beam line element, to deliver cooled and bunched
Radioactive Ion Beams (RIBs) with an enhanced optical beam quality beam to most of
the ISOLDE experiments. In this contribution the key parts and the
... More
Presented by Mr. Ivan PODADERA ALISEDA
on
7 Feb 2006
at
15:45
Session:
Trapping for Nuclear Physics
The mass is a fundamental property of a nuclide. Its measurement contributes to a
variety of fundamental studies including tests of the Standard Model and the weak
interaction. The limits of mass measurements of exotic nuclei have been extended
considerably by improving and developing the Penning trap mass spectrometer ISOLTRAP
at the ISOLDE facility at CERN. The mass resolving power of IS
... More
Presented by Mr. Sebastian GEORGE
on
6 Feb 2006
at
17:00
Session:
Trapping for Nuclear Physics
Nucleosynthesis theory describes how elements and nuclides are formed in stellar
evolution, e.g., violent processes like supernovae explosions. For the calculations
of the various pathways from hydrogen to the heavier elements the nuclear properties
of a large number of nuclides need to be known [1,2]. Especially in the case of the
r-process, where elements heavier than iron are formed by rapi
... More
Presented by Dr. Alexander HERLERT
on
6 Feb 2006
at
16:20
Session:
Nuclear Physics III
In the second half of 2005 the Aarhus-Gothenburg-Madrid collaboration performed two
different experiments impinging 11Be and 9Li on deuterium targets to study transfer
reactions to different final states.
This type of transfer reactions (at 2-3 Mev/u) gives information on several systems
since both elastic scattering, stripping and pick-up channels are open.
I would therefore like to pre
... More
Presented by Henrik JEPPESEN
on
8 Feb 2006
at
15:10
Session:
Nuclear Physics II
In recent measurements of g factors and lifetimes of short-lived nuclear states
several radioactive nuclei have been investigated which were produced in
alpha-transfer reactions to stable projectiles at the Coulomb barrier employing the
techniques of transient magnetic fields and Doppler-Shift-Attenuation, respectively.
In particular, this method has been applied to 44Ti [1], 52Ti [2], 62Zn [3
... More
Presented by Prof. Karl-Heinz SPEIDEL
on
8 Feb 2006
at
09:25
Session:
Technical Developments II
An accurate value of yields is essential for the preparation of
experimental proposals for the ISOLDE facility as well as for the
success of the experiments themselves. After the adjustment of the
target and ion source the ISOLDE technical group provides a first
estimation of the measured yield, but in many cases the measurement of
the yield in the experimental set-ups is required. Therefore,
... More
Presented by Dr. Manuela TURRION NIEVES
on
8 Feb 2006
at
12:20
Session:
Trapping for Nuclear Physics
During the last year, efforts were made to improve and understand in more detail the
WITCH experimental setup. At the end of 2004 several problems were uncovered and a
number of them have already been dealt with in detail.
The MCP's used for tuning the ion beam in the setup where shown to have saturation
effects but this problem is now understood and can be prevented.
The behavior of the
... More
Presented by Mr. Sam COECK
on
6 Feb 2006
at
16:40
