A5081571920- Nuclear physics research studies
- Atomic and Molecular Physics
- Nuclear Physics and Applications
- Astronomical and nuclear sciences
- Quantum Chromodynamics and Particle Interactions
- X-ray Spectroscopy and Fluorescence Analysis
- Advanced Chemical Physics Studies
- Advanced NMR Techniques and Applications
- Particle physics theoretical and experimental studies
- Nuclear reactor physics and engineering
- Quantum, superfluid, helium dynamics
- Atomic and Subatomic Physics Research
- Particle accelerators and beam dynamics
- Rare-earth and actinide compounds
- Medical Imaging Techniques and Applications
- Superconducting Materials and Applications
- Particle Accelerators and Free-Electron Lasers
- Radiation Therapy and Dosimetry
- Electron and X-Ray Spectroscopy Techniques
- Ion-surface interactions and analysis
- Boron Compounds in Chemistry
- Radiation Shielding Materials Analysis
- Scientific Research and Discoveries
- Astro and Planetary Science
- Mass Spectrometry Techniques and Applications
Florida State University
2015-2024
University of Warsaw
2013-2021
University of Liverpool
2020
Institute for Nuclear Research
2017
Texas A&M University
2009-2010
Joint Institute for Nuclear Astrophysics
2009
University of Notre Dame
2009
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud
2009
Istituto Nazionale di Fisica Nucleare
2009
University of Jyväskylä
2009
The energies and $B({E2;0}_{\mathrm{g}.\mathrm{s}.}^{+}\ensuremath{\rightarrow}{2}_{1}^{+})$ values for the lowest ${J}^{\ensuremath{\pi}}{\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}2}^{+}$ states in neutron-rich radioactive nuclei ${}^{38,40,42}\mathrm{S}$ ${}^{44,46}\mathrm{Ar}$ were measured via intermediate-energy Coulomb excitation. results ${}^{40,42}\mathrm{S}$ provide first evidence of moderate deformation near $N\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}28$, while...
The $\ensuremath{\beta}$-unstable nuclei ${}^{32,34,36,38}\mathrm{Si}$ have been produced by projectile fragmentation and studied in-beam Coulomb excitation. Excited states at $1399\ifmmode\pm\else\textpm\fi{}25$ keV $1084\ifmmode\pm\else\textpm\fi{}20$ identified for the first time in ${}^{36}\mathrm{Si}$ ${}^{38}\mathrm{Si}$, respectively, tentatively assigned ${J}^{\ensuremath{\pi}}{\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}2}^{+}$....
The N = 28 shell closure has been investigated via the 46Ar(d,p)47Ar transfer reaction in inverse kinematics. Energies and spectroscopic factors of neutron p(3/2), p(1/2), f(5/2) states 47Ar were determined compared to those 49Ca isotone. We deduced a reduction gap by 330(90) keV spin-orbit weakenings approximately 10(2) 45(10)% for f p states, respectively. Such large variations splittings could be accounted proton-neutron tensor force density dependence interaction, This contrasts with...
Inclusive electron-scattering measurements of \ensuremath{\Delta} electroexcitation in nuclei are reported. Electrons with energies 0.96, 1.1, 1.3, and 1.5 GeV were scattered from $^{1}\mathrm{H}$, $^{4}\mathrm{He}$, C Fe, W at 37.5\ifmmode^\circ\else\textdegree\fi{}, corresponding to ${Q}^{2}$=0.20--0.52 (GeV/c${)}^{2}$ the peak. The centroid \ensuremath{\Delta}-region cross-section peak is above that for free nucleon it shifts higher invariant mass as ${Q}^{2}$ increases. A dependence dip...
To investigate the behavior of N = 14 neutron gap far from stability with a neutron-sensitive probe, proton elastic and 2(1)+ inelastic scattering angular distributions for neutron-rich nucleus 22O were measured using MUr à STrip detector array at Grand Accélérateur National d'Ions Lourds facility. A deformation parameter beta(p,p') 0.26 +/- 0.04 is obtained state, much lower than in 20O, showing weak contribution to this state. microscopic analysis was performed matter transition densities...
The 9Be(32Ar, 31Ar)X reaction, leading to the 5/2+ ground state of a nucleus at proton drip line, has cross section 10.4(13) mb beam energy 65.1 MeV/nucleon. This translates into spectroscopic factor that is only 24(3)% predicted by many-body shell-model theory. We introduce refinements eikonal reaction theory used extract clarify this very strong reduction represents an effect nuclear structure. suggest it reflects correlation effects linked high neutron separation (22.0 MeV) for state.
We report on the first spectroscopy study of very neutron-rich nucleus (36)(12)Mg24 using direct two-proton knockout reaction 9Be(38Si,36Mg+gamma)X at 83 MeV/nucleon. The energy excited 2+ state 36Mg, E(2+(1)=660(6) keV, was measured. magnitude partial cross sections to ground and 2+(1) is indicative strong intruder admixtures in lowest-lying states as suggested by Monte Carlo shell-model calculations.
The neutron-rich $N=28$ nucleus $^{44}\mathrm{S}$ was studied using the two-proton knockout reaction from $^{46}\mathrm{Ar}$ at intermediate beam energy. We report observation of four new excited states, one which is a strongly prolate deformed 4${}^{+}$ state, as indicated by shell-model calculation. Its deformation originates in neutron configuration fundamentally different ``intruder'' responsible for ground-state deformation. Consequently, we do not have three coexisting shapes...
The structure of the neutron-rich silicon isotopes $^{36,38,40}\mathrm{Si}$ was studied by one-neutron and one-proton knockout reactions at intermediate beam energies. We construct level schemes for residues $^{35,37,39}\mathrm{Si}$ $^{35,37,39}\mathrm{Al}$ compare cross sections to predictions an eikonal model in conjunction with large-scale shell-model calculations. agreement these calculations present experiment lends support microscopic explanation enhanced collectivity region...
The $^{12}\mathrm{C}(\ensuremath{\alpha},\ensuremath{\gamma})^{16}\mathrm{O}$ reaction plays a fundamental role in astrophysics and needs to be known with accuracy better than 10%. Cascade $\ensuremath{\gamma}$ transitions through the excited states of $^{16}\mathrm{O}$ are contributing uncertainty. We constrained contribution ${0}^{+}$ (6.05 MeV) ${3}^{\ensuremath{-}}$ (6.13 cascade by measuring asymptotic normalization coefficients for these using $\ensuremath{\alpha}$-transfer...
Angular distributions of the $\ensuremath{\alpha}$-particle production differential cross section from breakup ${}^{6}\mathrm{Li}$ and ${}^{7}\mathrm{Li}$ projectiles incident on a ${}^{208}\mathrm{Pb}$ target have been measured at seven projectile energies between 29 52 MeV. The $\ensuremath{\alpha}$-breakup was found to be systematically greater than that across entire energy range. These data compared with previously reported results predictions continuum-discretized coupled channels...
The elastic scattering of $^{7}\mathrm{Li}$+$^{16}\mathrm{O}$ has been measured at ${E}_{\mathrm{Li}}=50$ MeV and fitted with an optical model potential. $^{16}\mathrm{O}$($^{7}\mathrm{Li}$,$^{7}\mathrm{Be}$)$^{16}\mathrm{N}$ reaction investigated MeV. States groups states were observed up to 6.3 excitation in the $^{16}\mathrm{N}$+$^{7}\mathrm{Be}$ system. Angular distributions for $^{16}\mathrm{N}$ ${2}^{\ensuremath{-}}$ 0.0 MeV, ${3}^{\ensuremath{-}}$ 0.297 ${4}^{\ensuremath{-}}$ 6.17...
New elastic scattering angular distributions extending over the large range 10\ifmmode^\circ\else\textdegree\fi{}---170\ifmmode^\circ\else\textdegree\fi{} c.m. are reported for $^{6}\mathrm{Li}$+$^{12}\mathrm{C}$ at 24 and 30 MeV, $^{6}\mathrm{Li}$+$^{16}\mathrm{O}$ 25.7 $^{7}\mathrm{Li}$+$^{12}\mathrm{C}$ 34 MeV. These data have been analyzed well described by optical model using Woods-Saxon potentials, or potentials with a double-folded real part. Using these previously published data,...
The spectroscopy of the unstable $^{8}\mathrm{He}$ and unbound $^{7}\mathrm{He}$ nuclei is investigated via $p(^{8}\mathrm{He}$, d) transfer reaction with a 15.7A MeV beam from SPIRAL facility. emitted deuterons were detected by telescope array MUST. results are analyzed within coupled-channels Born approximation framework, spectroscopic factor ${C}^{2}S=4.4\ifmmode\pm\else\textpm\fi{}1.3$ for neutron pickup to ${}^{7}{\mathrm{He}}_{g.s.}$ deduced. This value consistent full p3/2 subshell...
The inclusion of the quadrupole moment $^{7}\mathrm{Li}$ and $^{9}\mathrm{Be}$ in coupled-channels calculations removes need to renormalize real double-folded potential, obtained from an effective nucleon-nucleon interaction, for $^{7}\mathrm{Li}$+$^{54}\mathrm{Fe}$, $^{40}\mathrm{Ca}$ $^{9}\mathrm{Be}$+$^{40}\mathrm{Ca}$ elastic scattering.
Background: Clustering phenomena in $N\ensuremath{\ne}Z$ nuclei provide an opportunity to understand the interplay between cluster and nucleon degrees of freedom.Purpose: To study resonances ${}^{18}\mathrm{O}$ spectrum, populated ${}^{14}\mathrm{C}+\ensuremath{\alpha}$ elastic scattering.Method: The thick target inverse kinematics technique was used measure excitation function for scattering. A 42-MeV ${}^{14}\mathrm{C}$ beam populate states energy up 14.9 MeV ${}^{18}\mathrm{O}$. analysis...
A near-threshold proton resonance in ^{11}B at E_{ex}=11.44±0.04 MeV is observed via the reaction ^{10}Be(d,n)^{11}Be→^{10}Be+p inverse kinematics, measured with a beam of radioactive isotope ^{10}Be. The energy E_{res}=211(40) keV consistent signal by Ayyad et al. β-delayed decay ^{11}Be. By comparison to distorted wave Born approximation calculation, 0.27(6) spectroscopic factor extracted and tentative (ℓ=0) character assigned for this resonance. significant cross section proton-transfer...