EXPERIMENTAL STATIONS
MINIBALL
The high-resolution Miniball germanium detector array has been operational at REX-ISOLDE at CERN for over 10 years. This array consists of 24 six-fold segmented, tapered, encapsulated high-purity germanium crystals and was specially designed for low multiplicity experiments with low-intensity radioactive ion beams (RIB). For work with rare-isotope beams, the multiplicities are low (often only a few states are excited) and the yields of such beams are usually much lower than for conventional experiments, so efficiency is paramount. High granularity and high efficiency were achieved by the segmentation of the charge-collection electrodes of the Ge detectors and the use of pulse-shape analysis to determine the position of the first interaction of the γ ray within the Ge crystal, giving a spatial resolution significantly finer than the dimensions of the crystal. The Miniball array has been used in numerous Coulomb-excitation and transfer-reaction experiments with exotic RIBs with energies up to 3 MeV/u, produced at the ISOLDE facility.
ISS
The ISOLDE Solenoidal Spectrometer (ISS) project will design and construct instruments to explore the nuclear reactions that occur when stars explode in supernovae. The 4 T ISS magnet, a decommissioned MRI scanner, underwent an extensive programme of preparatory work and was cooled to liquid helium temperatures before being moved to the ISOLDE hall.The ISS project team is also making excellent progress on the mechanical infrastructure, the detectors and the readout system. It recently took delivery of the first batch of silicon detectors and these are currently undergoing acceptance tests. The completed ISS should be available for physics exploitation after the second long shutdown (LS2). Work is also progressing well on the active target SpecMAT that will be used in separate experiments inside the ISS magnet.
SCATTERING CHAMBER
At the end of the third beam line, smaller, moveable experimental setups will be installed. An example is the scattering chamber (SEC), with different charged particle detector arrays such as CORrelation SETup for quasi-fission measurements. It will have to be removed when Active Target Detector or the optical time projection chamber is installed in its place.
ACTIVE EXPERIMENTS
Code | Proposal | Title | Spokesperson | Contact | Status |
IS631 | P467 | The (d,p) reaction on 206Hg | B.P. Kay / C.R. Hoffman | K. Johnston | Preparation |
IS629 | P479 | Beta decay of 11Be | C. Mazzocchi / K. Riisager | K. Johnston | Preparation |
IS628 | P478 | Nuclear moment studies of short-lived excited states towards the Island of Inversion. g factor of 28Mg (2+) using TDRIV on H-like ions. | G. Georgiev / A. Stuchbery | L. Gaffney | Preparation |
IS621 | P470 | Single-particle behaviour towards the ``island of inversion" - 28,30Mg(d,p)29,31Mg in inverse kinematics | D.K. Sharp/ S. Freeman | K. Johnston | Preparation |
IS619 | P468 | Effects of the neutron halo in 15C scattering at energies around the Coulomb barrier | I. Martel / O. Tengblad | R. Lica | Preparation |
IS618 | P465 | Two-phonon octupole collectivity in the doubly-magic nucleus 146Gd | G. de Angelis | R. Lica | Preparation |
IS616 | P463 | Reaction mechanisms in collisions induced by 8B beam close to the barrier | Di Pietro, A. / Figuera, P. | Madurga, M. | Preparation |
IS607 | P441 | The 59Cu(p,alpha) cross section and its implications for nucleosynthesis in core collapse supernovae | Lederer, C. | Kowalska, M. | Preparation |
IS597 | P423 | Probing Shape Coexistence in neutron-deficient 72Se via Low-Energy Coulomb Excitation | D.T. Doherty / J. Ljungvall | E. Rapisarda | Preparation |
IS596 | P421 | 2 + Anomaly and Configurational Isospin Polarization of 136Te | V. Werner / N. Pietralla / G. Rainovski | E. Rapisarda | Preparation |
IS595 | P419 | Spectroscopy of particle-phonon coupled states in 133Sb by the cluster transfer reaction of 132Sn on 7Li: an advanced test of nuclear interactions | S. Leoni / B. Fornal | M. Kowalska | Preparation |
IS591 | P377 | 18N: a challenge to the shell model and a part of the to r-process element production in Type II supernovae | Matta, A / Catford, W | Rapisarda, E | Preparation |
IS587 | P398 | Characterising excited states in and around the semi-magic nucleus\n 68 Ni using Coulomb excitation and one-neutron transfer | Gaffney, L./Flavigny, F./Zielinska, M./Kolos, K. | Rapisarda, E | Preparation |
IS581 | P356 | Determination of the fission barrier height in fission of heavy radioactive beams induced by the (d,p)-transfer | Veselsky, M. / Raabe, R. | Rapisarda, E | Preparation |
IS572 | P379 | Study of shell evolution around the doubly magic 208Pb via a multinucleon transfer reaction with an unstable beam | Valient Dobon, J.J. / Szilner, S. | Rapisarda, E | Preparation |
IS566 | P370 | Probing intruder configurations in 186,188Pb using Coulomb excitation | Pakarinen, J. | Rapisarda, E | Preparation |
IS564 | P366 | Study of the unbound proton-rich nucleus 21Al with resonance elastic and inelastic scattering using an active target | Fernández-Dominguez, B./Tengblad, O./Caamano | Kurcewicz, J. | Preparation |
IS563 | P364 | Coulomb excitation of 182-184Hg: Shape coexistence in the neutron-deficient lead region | Wrzosek-Lipska, K. / Joss, D. / Jenkins, D. / Paka | Rapisarda, E | Preparation |
IS560 | P360 | Nuclear-moment studies in the odd-mass In isotopes up to N=82 using the Tilted Foils technique | Georgiev, G. | Yordanov, D. | Preparation |
IS558 | P354 | Shape Transition and Coexistence in Neutron-Deficient Rare Earth Isotopes | Görgen, A. | Rapisarda,E. | Preparation |
IS556 | P352 | Spectroscopy of low-lying single-particle states in 81Zn populated in the 80Zn(d,p) reaction | Orlandi, R. / Raabe, R. | Rapisarda,E. | Preparation |
IS555 | P351 | Study of shell evolution in the Ni isotopes via one-neutron transfer reaction in 70Ni | Valiente Dobon, J. / Orlandi, R. / Mengoni, D. | Rapisarda,E. | Preparation |
IS554 | P350 | Search for higher excited states of 8Be* to study the cosmological 7Li problem | Gupta, D. | Rapisarda,E. | Preparation |
IS553 | P348 | Determination of the B(E3,0+->3-) strength in the in the octupole-correlated nuclei 142,144Ba using Coulomb excitation | Scheck, M. / Joss, D. | Rapisarda,E. | Preparation |
IS552 | P347 | Measurements of octupole collectivity in Rn and Ra nuclei using Coulomb excitation | Butler, P. / Joss, D. / Scheck, M. | Rapisarda,E. | Preparation |
IS550 | P344 | Study of the Dinuclear System ARb + 209Bi (Z1 + Z2 = 120) | Heinz, S. / Kozulin, E. | Kowalska, M. | Preparation |
IS549 | P343 | Coulomb Excitation of Neutron-rich 134;136Sn isotopes | Kröll, T. / Simpson, G. | Rapisarda,E. | Preparation |
IS547 | P340 | Coulomb excitation of the two proton-hole nucleus 206Hg | Podolyak, Z. | Rapisarda,E. | Preparation |
IS546 | P339 | Study of the effect of shell stabilization of the collective isovector valence-shell excitations along the N=80 isotonic chain | Bauer, C. / Pietralla, N. / Rainovski, G. | Rapisarda,E. | Preparation |
I152 | I152 | Shape co-existence and higher order deformations | Nara Singh B.S. / Jenkins D. | Rapisarda,E. | Preparation |
I151 | I151 | Implementing the recoil distance Doppler-shift technique at HIE-ISOLDE: Investigation of neutron-rich 86 Se | Fransen C. | Rapisarda,E. | Preparation |
I150 | I150 | Shape coexistence in 68Ni and 70Ni | Recchia F. / Lenzi S. | Rapisarda,E. | Preparation |