A5066080876- Nuclear physics research studies
- Nuclear Physics and Applications
- Atomic and Molecular Physics
- Astronomical and nuclear sciences
- Quantum Chromodynamics and Particle Interactions
- Nuclear reactor physics and engineering
- X-ray Spectroscopy and Fluorescence Analysis
- Ion-surface interactions and analysis
- Particle accelerators and beam dynamics
- Particle physics theoretical and experimental studies
- Mass Spectrometry Techniques and Applications
- Advanced Chemical Physics Studies
- Advanced NMR Techniques and Applications
- Radiation Therapy and Dosimetry
- Atomic and Subatomic Physics Research
- High-Energy Particle Collisions Research
- Quantum, superfluid, helium dynamics
- Radiation Detection and Scintillator Technologies
- Crystallography and Radiation Phenomena
- Neutrino Physics Research
- Particle Accelerators and Free-Electron Lasers
- Astro and Planetary Science
- Superconducting Materials and Applications
- Nuclear Materials and Properties
- Particle Detector Development and Performance
GSI Helmholtz Centre for Heavy Ion Research
2016-2025
Justus-Liebig-Universität Gießen
2016-2025
Chalmers University of Technology
2022
Goethe University Frankfurt
2008-2022
Facility for Antiproton and Ion Research
2021
Saha Institute of Nuclear Physics
2020
The University of Tokyo
2002-2014
Nara Women's University
2002-2014
RIKEN Nishina Center
2014
Tokyo Metropolitan University
2014
By exploiting Coulomb dissociation of high-energy radioactive beams the neutron-rich nuclei $^{129\ensuremath{-}132}\mathrm{Sn}$ and $^{133,134}\mathrm{Sb}$, their dipole-strength distributions have been measured. A sizable fraction ``pygmy'' dipole strength, energetically located below giant resonance, is observed in all these nuclei. comparison with available pygmy resonance data stable ($^{208}\mathrm{Pb}$ $N=82$ isotones) indicates a trend strength increasing proton-to-neutron asymmetry....
The dipole strength distribution above the one-neutron separation energy was measured in unstable 130Sn and double-magic 132Sn isotopes. results were deduced from Coulomb dissociation of secondary Sn beams with energies around 500 MeV/nucleon, produced by in-flight fission a primary 238U beam. In addition to giant resonance, resonancelike structure ("pygmy resonance") is observed at lower excitation 10 MeV exhausting few percent isovector E1 energy-weighted sum rule. are discussed context...
The three-body breakup ${}^{6}{\stackrel{\ensuremath{\rightarrow}}{\mathrm{He}}}^{4}\mathrm{He}+n+n$ is studied experimentally, using a secondary ${}^{6}\mathrm{He}$ ion beam of 240 MeV/nucleon incident on carbon and lead targets. Integrated cross sections for one- two-neutron knockout differential $d\ensuremath{\sigma}{/dE}^{*}$ $d\ensuremath{\sigma}/d\ensuremath{\vartheta}$ inelastic nuclear or electromagnetic excitations into the continuum are presented. $E$1-strength distribution deduced...
The gamma decay from Coulomb excitation of 68Ni at 600 MeV/nucleon on a Au target was measured using the RISING setup fragment separator GSI. beam produced by fragmentation reaction 86Kr 900 9Be and selected separator. rays were with HPGe detectors forward angles BaF2 scintillators backward angles. spectra show peak centered approximately 11 MeV, whose intensity can be explained in terms an enhanced strength dipole response function (pygmy resonance). Such pygmy structure has been predicted...
Differential cross sections for p- ${}^{6}\mathrm{He}$ and ${}^{8}\mathrm{He}$ elastic scattering have been measured in inverse kinematics at small momentum transfers up to $|t|\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.05(\mathrm{GeV}/c{)}^{2}$ projectile energies of about 700 MeV/nucleon. Nuclear matter densities deduced from the data are consistent with concept that nuclei an $\ensuremath{\alpha}$-like core a significant neutron skin. The rms radii nuclear distributions were...
The first measurement of the momentum distribution for one-neutron removal from $^{24}\mathrm{O}$ at $920A\text{ }\text{ }\mathrm{MeV}$ performed GSI, Darmstadt is reported. observed has a width (FWHM) $99\ifmmode\pm\else\textpm\fi{}4\text{ }\mathrm{MeV}/c$ in projectile rest frame and cross section $63\ifmmode\pm\else\textpm\fi{}7\text{ }\mathrm{mb}$. results are well explained with nearly pure $2{s}_{1/2}$ neutron spectroscopic factor $1.74\ifmmode\pm\else\textpm\fi{}0.19$ within eikonal...
The E1 strength distribution in Ni68 has been investigated using Coulomb excitation inverse kinematics at the RB3−LAND setup and by measuring invariant mass one- two-neutron decay channels. giant dipole resonance a low-lying peak (pygmy resonance) have observed 17.1(2) 9.55(17) MeV, respectively. measured polarizability is compared to relativistic random phase approximation calculations yielding neutron-skin thickness of 0.17(2) fm. A method analysis applicable neutron-rich nuclei developed,...
With a new detector setup and the high-resolution performance of fragment separator FRS at GSI we discovered 57 isotopes in atomic number range 60$\leq Z \leq 78$: \nuc{159-161}{Nb}, \nuc{160-163}{Pm}, \nuc{163-166}Sm, \nuc{167-168}{Eu}, \nuc{167-171}{Gd}, \nuc{169-171}{Tb}, \nuc{171-174}{Dy}, \nuc{173-176}{Ho}, \nuc{176-178}{Er}, \nuc{178-181}{Tm}, \nuc{183-185}{Yb}, \nuc{187-188}{Lu}, \nuc{191}{Hf}, \nuc{193-194}{Ta}, \nuc{196-197}{W}, \nuc{199-200}{Re}, \nuc{201-203}{Os},...
Heavy neutron-rich nuclei were populated via the fragmentation of a E/A=1 GeV 20882Pb beam. Secondary fragments separated and identified subsequently implanted in passive stopper. By detection delayed γ rays, isomeric decays associated with these have been identified. A total 49 isomers detected, majority them observed for first time. The newly discovered are 204,20580Hg, 201,202,204,20579Au, 197,203,20478Pt, 195,199−20377Ir, 193,197−19976Os, 19675Re, 190,19174W, 18973Ta. Possible level...
A precision mass investigation of the neutron-rich titanium isotopes $^{51\ensuremath{-}55}\mathrm{Ti}$ was performed at TRIUMF's Ion Trap for Atomic and Nuclear science (TITAN). The range measurements covers $N=32$ shell closure, overall uncertainties $^{52\ensuremath{-}55}\mathrm{Ti}$ values were significantly reduced. Our results conclusively establish existence weak effect $N=32$, narrowing down abrupt onset this closure. data compared with state-of-the-art ab initio model calculations...
Proton radii of ^{12-19}C densities derived from first accurate charge changing cross section measurements at 900A MeV with a carbon target are reported. A thick neutron surface evolves ∼0.5 fm in ^{15}C to ∼1 ^{19}C. The halo radius ^{19}C is found be 6.4±0.7 as large ^{11}Li. Ab initio calculations based on chiral nucleon-nucleon and three-nucleon forces reproduce the well.
We report the measurement of reaction cross sections (${\ensuremath{\sigma}}_{R}^{\mathrm{ex}}$) $^{27,29}\mathrm{F}$ with a carbon target at RIKEN. The unexpectedly large ${\ensuremath{\sigma}}_{R}^{\mathrm{ex}}$ and derived matter radius identify $^{29}\mathrm{F}$ as heaviest two-neutron Borromean halo to date. is attributed neutrons occupying $2{p}_{3/2}$ orbital, thereby vanishing shell closure associated neutron number $N=20$. results are explained by state-of-the-art model...