Publications (33)
LENDA, a Low Energy Neutron Detector Array for experiments with radioactive beams in inverse kinematics
G. Perdikakis, M. Sasano, Sam M. Austin +17
The Low Energy Neutron Detector Array (LENDA) is a neutron time-of-flight (TOF) spectrometer developed at the National Superconducting Cyclotron Lab- oratory (NSCL) for use in inve…
Weakly Bound Neutron-Rich Nuclei and Cosmic Phenomena
Ushasi Datta, A. Rahaman, S. Chakraborty +38
The single particle and bulk properties of the neutron-rich nuclei constrain fundamental issues in nuclear physics and nuclear astrophysics like the limits of existence of quantum…
The Super-FRS GEM-TPC prototype development - TDR
F. Garcia, C. Caesar, T. Grahn +2
This document contains the pre-design of the beam diagnostics components Tracking Detectors for the Super-FRS. A GEM-TPC detector has been suggested as suitable tracking detector f…
Coulomb breakup of neutron-rich Na isotopes near the island of inversion
A . Rahaman, Ushasi Datta, T. Aumann +50
First results are reported on the ground state configurations of the neutron-rich Na isotopes, obtained via Coulomb dissociation (CD) measurements as a method of the dire…
Hypernuclear spectroscopy of products from 6Li projectiles on a carbon target at 2 AGeV
C. Rappold, E. Kim, D. Nakajima +50
A novel experiment, aiming at demonstrating the feasibility of hypernuclear spectroscopy with heavy-ion beams, was conducted. Using the invariant mass method, the spectroscopy of h…
Evolution of two-neutrons configuration from 11Li to 13Li
P. Andrè, A. Corsi, A. Revel +69
In this work we investigate the two-neutron decay of 13Li and of the excited states of 11Li populated via one-proton removal from 14Be and 12Be, respectively. A phenomenological mo…
The Nd(He,) and Sm(,He) reactions with applications to decay of Nd
C. J. Guess, T. Adachi, H. Akimune +40
The Nd(He,) reaction at 140 MeV/u and Sm(,He) reaction at 115 MeV/u were measured, populating excited states in Pm. The transitions studied po…
Structure of 13Be probed via quasi-free scattering
A. Corsi, Y. Kubota, J. Casal +65
We present an investigation of the structure of 13Be obtained via a kinematically complete measurement of the (p; pn) reaction in inverse kinematics at 265 MeV/nucleon. The relativ…
Results of the ASY-EOS experiment at GSI: The symmetry energy at suprasaturation density
P. Russotto, S. Gannon, S. Kupny +89
Directed and elliptic flows of neutrons and light charged particles were measured for the reaction 197Au+197Au at 400 MeV/nucleon incident energy within the ASY-EOS experimental ca…
Beyond the Neutron Drip-Line: The Unbound Oxygen Isotopes 25O and 26O
C. Caesar, J. Simonis, T. Adachi +121
The very neutron-rich oxygen isotopes 25O and 26O are investigated experimentally and theoret- ically. In this first R3B-LAND experiment, the unbound states are populated at GSI vi…
Border of the Island of Inversion: Unbound states in Ne
M. Holl, S. Lindberg, A. Heinz +89
The nucleus Ne is situated at the border of the island of inversion. Despite significant efforts, no bound low-lying intruder -state, which would place Ne fi…
Efficiency determination of resistive plate chambers for fast quasi-monoenergetic neutrons
M. Röder, Z. Elekes, T. Aumann +17
Composite detectors made of stainless steel converters and multigap resistive plate chambers have been irradiated with quasi-monoenergetic neutrons with a peak energy of 175MeV. Th…
Gamow-Teller Unit Cross Sections for (t,3He) and (3He,t) Reactions
G. Perdikakis, R. G. T. Zegers, Sam M. Austin +16
The proportionality between differential cross sections at vanishing linear momentum transfer and Gamow-Teller transition strength, expressed in terms of the \textit{unit cross sec…
Twin GEM-TPC Prototype (HGB4) Beam Test at GSI and Jyväskylä - a Development for the Super-FRS at FAIR
F. GarcÃa, R. Turpeinen, J. Ãystö +18
The FAIR[1] facility is an international accelerator centre for research with ion and antiproton beams. It is being built at Darmstadt, Germany as an extension to the current GSI r…
Unveiling the Two-Proton Halo Character of 17Ne: Exclusive Measurement of Quasi-free Proton-Knockout Reactions
C. Lehr, F. Wamers, F. Aksouh +62
The proton drip-line nucleus 17Ne is investigated experimentally in order to determine its two-proton halo character. A fully exclusive measurement of the 17Ne(p,2p)16F->15O+p quas…
Spectroscopy of 13B via the 13C(t,3He) reaction at 115 AMeV
C. J. Guess, R. G. T. Zegers, B. A. Brown +13
Gamow-Teller and dipole transitions to final states in 13B were studied via the 13C(t,3He) reaction at Et = 115 AMeV. Besides the strong Gamow-Teller transition to the 13B ground s…
The dipole strength distribution of He and decay characteristics
C. Lehr, T. Aumann, M. Duer +91
The weak binding and spatially extended neutron densities characteristic of drip-line nuclei give rise to a distinctive low-energy dipole response. The drip-line nucleus He is…
Surface localization of the dineutron in Li
Y. Kubota, A. Corsi, G. Authelet +64
The formation of a dineutron in the nucleus Li is found to be localized to the surface region. The experiment measured the intrinsic momentum of the struck neutron in $^{11}…
Extending the Southern Shore of the Island of Inversion to F
A. Revel, O. Sorlin, F. M. Marques +89
Detailed spectroscopy of the neutron-unbound nucleus F has been performed for the first time following proton/neutron removal from Ne/F beams at energies aroun…
Quasi-free Neutron Knockout Reaction Reveals a Small -orbital Component in the Borromean Nucleus B
Z. H. Yang, Y. Kubota, A. Corsi +73
A kinematically complete quasi-free experiment in inverse kinematics was performed to study the structure of the Borromean nucleus B, which had long been considered…
Spectroscopy of deeply bound orbitals in neutron-rich Ca isotopes
P. J. Li, J. Lee, P. Doornenbal +85
The calcium isotopes are an ideal system to investigate the evolution of shell structure and magic numbers. Although the properties of surface nucleons in calcium have been well st…
Searching for universality of dineutron correlation at the surface of Borromean nuclei
A. Corsi, Y. Kubota, J. Casal +65
The dineutron correlation is systematically studied in three different Borromean nuclei near the neutron dripline, 11Li, 14Be and 17B, via the (p, pn) knockout reaction measured at…
Intruder configurations in Ne at the transition into the island of inversion: Detailed structure study of Ne
H. Wang, M. Yasuda, Y. Kondo +92
Detailed -ray spectroscopy of the exotic neon isotope Ne has been performed for the first time using the one-neutron removal reaction from Ne on a liquid hydrogen…
Probing the Z = 6 spin-orbit shell gap with (p,2p) quasi-free scattering reactions
I. Syndikus, M. Petri, A. O. Macchiavelli +76
The evolution of the traditional nuclear magic numbers away from the valley of stability is an active field of research. Experimental efforts focus on providing key spectroscopic i…
Twin GEM-TPC Prototype (HGB4) Beam Test at GSI - a Development for the Super-FRS at FAIR
F. Garcia, R. Turpeinen, R. Lauhakangas +30
The GEM-TPC detector will be part of the standard Super-FRS detection system, as tracker detectors at several focal stations along the separator and its three branches.
Nuclear astrophysics with radioactive ions at FAIR
R. Reifarth, S. Altstadt, K. Göbel +317
The nucleosynthesis of elements beyond iron is dominated by neutron captures in the s and r processes. However, 32 stable, proton-rich isotopes cannot be formed during those proces…
Effective proton-neutron interaction near the drip line from unbound states in F
M. Vandebrouck, A. Lepailleur, O. Sorlin +107
Background: Odd-odd nuclei, around doubly closed shells, have been extensively used to study proton-neutron interactions. However, the evolution of these interactions as a function…
Strong neutron pairing in core+4n nuclei
A. Revel, F. M. Marques, O. Sorlin +100
The emission of neutron pairs from the neutron-rich isotones C and O has been studied by high-energy nucleon knockout from N and O secondary…
Determination of the Neutron-Capture Rate of 17C for the R-process Nucleosynthesis
M. Heine, S. Typel, M. -R. Wu +124
With the RB-LAND setup at GSI we have measured exclusive relative-energy spectra of the Coulomb dissociation of C at a projectile energy around 425~AMeV on a lead targ…
Observation of a broad -wave resonant state in He
Y. L. Sun, A. Corsi, Y. Kubota +63
We report on the two-body invariant-mass spectroscopy of He, populated via the 11 knockout reaction from the two-neutron halo nucleus Li at 250 MeV/nucleon…
Magicity versus superfluidity around O viewed from the study of F
J. Kahlbow, T. Aumann, O. Sorlin +84
The neutron-rich unbound fluorine isotope F has been observed for the first time by measuring its neutron decay at the SAMURAI spectrometer (RIBF, RIKEN) in the quasi…
Mass, spectroscopy and two-neutron decay of Be
B. Monteagudo, F. M. Marqués, J. Gibelin +65
The structure and decay of the most neutron-rich beryllium isotope, Be, has been investigated following proton knockout from a high-energy B beam. Two relatively narr…
Systematic investigation of projectile fragmentation using beams of unstable B and C isotopes
R. Thies, A. Heinz, T. Adachi +119
Background: Models describing nuclear fragmentation and fragmentation-fission deliver important input for planning nuclear physics experiments and future radioactive ion beam facil…