A5033585138- Nuclear physics research studies
- Nuclear Physics and Applications
- Atomic and Molecular Physics
- Astronomical and nuclear sciences
- Quantum Chromodynamics and Particle Interactions
- Advanced NMR Techniques and Applications
- Advanced Chemical Physics Studies
- Rare-earth and actinide compounds
- Particle physics theoretical and experimental studies
- Atomic and Subatomic Physics Research
- Quantum, superfluid, helium dynamics
- Superconducting Materials and Applications
- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Nuclear reactor physics and engineering
- Inorganic Fluorides and Related Compounds
- High-Energy Particle Collisions Research
- Radiation Detection and Scintillator Technologies
- X-ray Spectroscopy and Fluorescence Analysis
- Astro and Planetary Science
- Radioactive Decay and Measurement Techniques
- Medical Imaging Techniques and Applications
- Scientific Research and Discoveries
- Physics of Superconductivity and Magnetism
- Quantum chaos and dynamical systems
Argonne National Laboratory
2000-2025
University of Warsaw
2024
National Centre for Nuclear Research
2024
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2023
Institut National de Physique Nucléaire et de Physique des Particules
2023
Université Paris-Saclay
2023
Centre National de la Recherche Scientifique
2023
Washington University in St. Louis
2012-2021
Florida State University
2017-2018
Ohio University
2017
Directed and elliptic flows of neutrons light charged particles were measured for the reaction 197Au+197Au at 400 MeV/nucleon incident energy within ASY-EOS experimental campaign GSI laboratory. The detection system consisted Large Area Neutron Detector LAND, combined with parts CHIMERA multidetector, ALADIN Time-of-flight Wall, Washington-University Microball detector. latter three arrays used event characterization reaction-plane reconstruction. In addition, an array triple telescopes,...
A rotational band with seven $\ensuremath{\gamma}$-ray transitions between states spin $2\ensuremath{\Elzxh}$ and $16\ensuremath{\Elzxh}$ has been observed in the doubly magic, self-conjugate nucleus ${}_{20}^{40}{\mathrm{Ca}}_{20}$. The measured transition quadrupole moment of ${1.80}_{\ensuremath{-}0.29}^{+0.39}e\mathrm{b}$ indicates a superdeformed shape deformation ${\ensuremath{\beta}}_{2}{\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}0.59}_{\ensuremath{-}0.07}^{+0.11}$. features...
The interaction of an E/A=57.6-MeV ^{17}Ne beam with a Be target is used to populate levels in ^{16}Ne following neutron knockout reactions. decay states into the three-body ^{14}O+p+p continuum observed High Resolution Array (HiRA). For first time for 2p emitter, correlations between momenta three products are measured sufficient resolution and statistics allow unambiguous demonstration their dependence on long-range nature Coulomb interaction. Contrary previous measurements, our limit Γ<80...
Excited states in ${}^{70}\mathrm{Br}$ were populated the ${}^{40}\mathrm{Ca}{(}^{32}\mathrm{S},pn)$ reaction at ${E}_{\mathrm{beam}}=80--100 \mathrm{MeV}$ and ${}^{40}\mathrm{Ca}{(}^{36}\mathrm{Ar},\ensuremath{\alpha}pn)$ ${E}_{\mathrm{beam}}=145 \mathrm{MeV}.$ The resulting gamma decay was detected using Gammasphere array triggered by a 30-element neutron detector. cross-bombardment allowed unambiguous assignment of levels to ${}^{70}\mathrm{Br},$ comprising total 32 built both on...
A model-independent technique was used to determine the $\gamma$-ray Strength Function ($\gamma$SF) of $^{56}$Fe down energies less than 1 MeV for first time with GRETINA using $(p,p')$ reaction at 16 MeV. No difference observed in energy dependence $\gamma$SF built on $2^{+}$ and $4^{+}$ final states, supporting Brink hypothesis. In addition, angular distribution polarization measurements were performed. The distributions are consistent dipole radiation. results show a small bias towards...
The $B(E2,\phantom{\rule{0.16em}{0ex}}{0}_{1}^{+}\ensuremath{\rightarrow}{2}_{1}^{+})$ strengths of $^{36}\mathrm{Ca}$ and $^{38}\mathrm{Ca}$ are measured to be 131(20) ${e}^{2}{\mathrm{fm}}^{4}$ 101(11) ${e}^{2}{\mathrm{fm}}^{4}$, respectively. $B(E2)$ value for required a measurement the $p$/$\ensuremath{\gamma}$ branching ratio because ${2}^{+}$ state is proton unbound. This ${B}_{p}=0.087(8)$. These branching-ratio values can reproduced in shell-model with ZMB2 interaction, an...
The isoscalar giant dipole resonance (ISGDR) in ${}^{208}\mathrm{Pb}$ has been investigated using inelastic scattering of 200 MeV $\ensuremath{\alpha}$ particles at and near 0\ifmmode^\circ\else\textdegree\fi{} where the angular distribution ISGDR can be clearly differentiated from those other modes. ``difference spectra'' technique was employed to separate high-energy octupole (HEOR). These data provide clearest evidence yet for adjacent HEOR. With these results, all expected...
Data from three experiments using the heavy-ion fusion evaporation-reaction ${}^{36}\mathrm{Ar}+{}^{28}\mathrm{Si}$ have been combined to study high-spin states in residual nucleus $^{60}\mathrm{Ni}$, which is populated via evaporation of four protons compound $^{64}\mathrm{Ge}$. The GAMMASPHERE array was used for all conjunction with a $4\ensuremath{\pi}$ charged-particle detector arrays (MICROBALL, LUWUSIA) and neutron detectors (NEUTRON SHELL) allow detection $\ensuremath{\gamma}$ rays...
The first excited, ${J}^{\ensuremath{\pi}}={2}^{+}$ state of $^{16}\mathrm{Ne}$ at ${E}^{*}=1.69(2)$ MeV is well populated in neutron knockout reactions with a $^{17}\mathrm{Ne}$ beam and the correlations between momenta three final fragments following $2p$ decay were measured. correlation pattern showed aspects both sequential diprotonlike decay, which reproduced three-body $^{14}\mathrm{O}$ + $p+p$ calculations. These calculations suggest that interference these processes responsible for...
Excited states have been observed for the first time in neutron-deficient ${}^{176,178}\mathrm{Hg}$ nuclei using recoil-decay tagging (RDT) technique which prompt $\ensuremath{\gamma}$ rays are associated with a particular isotope through correlation characteristic ground state $\ensuremath{\alpha}$ decay. Below $N\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}102$, excitation energy of rotational band built on prolate shape $({\ensuremath{\beta}}_{2}\ensuremath{\sim}0.25)$ increases...
The $^{154}\mathrm{Gd}$ nucleus was studied by \ensuremath{\gamma}-ray spectroscopy following the (\ensuremath{\alpha},2n) reaction at an energy of 26 MeV. We identified double-phonon K=${4}^{+}$ \ensuremath{\gamma}\ensuremath{\gamma} vibrational band in this 1645.8 keV. Also, we present systematics possible double phonon bands deformed rare-earth region nuclei.
Multiple superdeformed bands in the nuclei ${}^{80\ensuremath{-}83}\mathrm{Sr},$ ${}^{82\ensuremath{-}84}\mathrm{Y},$ and ${}^{83,84}\mathrm{Zr}$ have been studied a backed-target experiment, using Gammasphere Microball 4\ensuremath{\pi} detector arrays. For 15 these nuclei, average transition quadrupole moments measured with high accuracy, Doppler-shift attenuation method. Among are newly observed ${}^{83,84}\mathrm{Y},$ which ``isospectral'' ${}^{82,83}$ Sr. These nearly identical moments....
Three rotational bands in 74Kr were studied up to (in one case transition short of) the maximum spin I(max) of their respective single-particle configurations. Their lifetimes have been determined using Doppler-shift attenuation method. The deduced quadrupole moments reveal a modest decrease, but far from complete loss collectivity at I(max). This feature, together with results mean field calculations, indicates that observed do not terminate I =
An upper limit to the mass of three-proton unbound nucleus $^{17}\mathrm{Na}$ was measured be $\mathrm{\ensuremath{\Delta}}M\ensuremath{\le}34.72(6)$ MeV. The excitation energies, widths, and decay modes for one- two-proton decaying states $^{8}\mathrm{B}, ^{9}\mathrm{B}, ^{9}\mathrm{C}, ^{16}\mathrm{F}$, $^{17}\mathrm{Ne}$ were also measured. energy-angular correlations in $2p$ are presented.
A multi-step Coulomb excitation measurement with the GRETINA and CHICO2 detector arrays was carried out a 430-MeV beam of neutron-rich 110Ru (t1/2=12s) isotope produced at CARIBU facility. This represents first successful following post-acceleration an unstable refractory element. The reduced transition probabilities obtained for levels near ground state provide strong evidence triaxial shape; conclusion confirmed by comparisons results beyond-mean-field rotor model calculations.
Neutron transfer reactions with fast secondary beams of $^{17}$Ne, $^{15}$O, and $^9$C have been studied the HiRA CAESAR arrays. Excited states $^{18}$Ne, $^{16}$O, $^{10}$C in continuum identified using invariant-mass spectroscopy. The best experimental resolution these is achieved by selecting events where decay fragments are emitted transverse to beam direction. We confirmed a number spin assignments made previous works for negative-parity $^{18}$Ne. In addition we found new higher-lying...
The products of the $^{203,205}\mathrm{Tl}(^{50}\mathrm{Ti},2n)$ fusion-evaporation reactions were studied using recently commissioned Argonne Gas-Filled Analyzer at National Laboratory. Two $\ensuremath{\alpha}$-decay activities with energies 9210(19) and 9246(19) keV half-lives ${42}_{\ensuremath{-}14}^{+42}$ $24.{4}_{\ensuremath{-}4.5}^{+7.0}$ ms observed which followed by known $\ensuremath{\alpha}$ decays $^{247}\mathrm{Md}$ $^{243}\mathrm{Es}$. They are interpreted as originating from...