A5000761585- Nuclear physics research studies
- Nuclear Physics and Applications
- Atomic and Molecular Physics
- Astronomical and nuclear sciences
- Advanced Chemical Physics Studies
- Quantum Chromodynamics and Particle Interactions
- Nuclear reactor physics and engineering
- Quantum, superfluid, helium dynamics
- Advanced NMR Techniques and Applications
- Rare-earth and actinide compounds
- Particle accelerators and beam dynamics
- Atomic and Subatomic Physics Research
- Astro and Planetary Science
- X-ray Spectroscopy and Fluorescence Analysis
- Gamma-ray bursts and supernovae
- Superconducting Materials and Applications
- Radiation Detection and Scintillator Technologies
- Mass Spectrometry Techniques and Applications
- High-pressure geophysics and materials
- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Cold Atom Physics and Bose-Einstein Condensates
- Inorganic Fluorides and Related Compounds
- Advanced Algebra and Geometry
- Molecular Spectroscopy and Structure
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2020-2025
Université Paris-Saclay
2016-2025
Campus France
2013-2024
Centre National de la Recherche Scientifique
2015-2024
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
1992-2024
Institut National de Physique Nucléaire et de Physique des Particules
2015-2024
CEA DAM Île-de-France
2015-2024
Université Paris-Sud
2013-2023
Université Paris Cité
1999-2023
University of the Witwatersrand
2023
Valuable theoretical predictions of nuclear dipole excitations in the whole chart are great interest for different applications, including particular astrophysics. Here we extend our large-scale calculations $E1 \ensuremath{\gamma}$-ray strength function, obtained framework axially- symmetric-deformed quasiparticle random phase approximation (QRPA) based on finite-range D1M Gogny force, to calculation $M1$ function. We compare QRPA prediction with available experimental data and show that a...
The N=48 Ge80 nucleus is studied by means of β-delayed electron-conversion spectroscopy at ALTO. radioactive Ga80 beam produced through the isotope separation on line photofission technique and collected a movable tape for measurement γ e− emission following β decay. An electric monopole E0 transition, which points to 639(1) keV intruder 02+ state, observed first time. This new state lower than 21+ level in Ge80, provides evidence shape coexistence close one most neutron-rich doubly magic...
We have optimized the optical model potential (OMP) parameters for nucleon (protons and neutrons) induced reaction on 40Ca using OPTMAN code available RIPL-3 data library. The potentials, geometrical nuclear deformation were extracted via fitting angular distribution proton/neutron elastic inelastic scattering (Ep,n = 0 – 200 MeV) taken from EXFOR Our results demonstrate improvement in prediction of cross sections compared to Koning-Delaroche OMP. have, then, calculated γ-ray production most...
The ${}^{119--126}$Sn nuclei have been produced as fission fragments in two reactions induced by heavy ions: ${}^{12}\text{C}+{}^{238}\text{U}$ at a bombarding energy of 90 MeV and ${}^{18}\text{O}+{}^{208}\text{Pb}$ 85 MeV. Their level schemes built from $\ensuremath{\gamma}$ rays detected using the Euroball array. High-spin states located above long-lived isomeric even- odd-$A$ ${}^{120--126}$Sn identified. Moreover, lying around 4.5 established ${}^{120,122,124,126}$Sn delayed...
Several experiments around the world are looking for a new particle, named Dark Boson, which may do link between Ordinary Matter (which forms basically stars, planets, interstellar gas...) and Hidden Sectors of Universe. This if it exists, would act as messenger fundamental interaction nature. In this paper, underlying theory will be introduced first. A non-exhaustive summary experimental studies carried out to date foreseen in incoming years presented after,including 8 Be anomaly. The last...
Five $N=82$ isotones have been produced in two fusion-fission reactions and their $\ensuremath{\gamma}$ rays studied with the Euroball array. The high-spin states of ${}^{139}$La identified, while yrast near-to-yrast structures four others greatly extended. From angular correlation analysis, spin values assigned to some ${}^{136}$Xe ${}^{137}$Cs. Several cascades involving found be delayed; they deexcite an isomeric state ${T}_{1/2}=315(35)$ ns located at 1800 keV excitation energy. excited...
Prompt γ-ray spectroscopy of the neutron-rich ^{96}Kr, produced in transfer- and fusion-induced fission reactions, has been performed using combination Advanced Gamma Tracking Array VAMOS++ spectrometer. A second excited state, assigned to J^{π}=4^{+}, is observed for first time, a previously reported level energy 2^{+} state confirmed. The measured ratio R_{4/2}=E(4^{+})/E(2^{+})=2.12(1) indicates that this nucleus does not show well-developed collectivity contrary seen heavier N=60...
Dipole transitions linking signature partner superdeformed bands in Hg193 have been observed. Measurements of the photon decay branching ratios, taken together with average quadrupole moment measured neighboring nuclei, enable absolute M1 strengths to be determined. From these data, using strong coupling model, we find (gK-gR)K/Q0=-0.14±0.01 (e b)−1, gK=-0.65±0.14 Ω=2.8±0.8. These data are consistent neutron orbital being [512]5/2− as predicted by cranked Woods-Saxon calculations.Received 28...
The complete spectrum of γ rays following the decay superdeformed (SD) states in Hg192 has been extracted. spectrum, which comprises a quasicontinuous component and sharp lines, reveals mechanism defines excitation energies SD band. results from coupling between cold, ordered system with hot, chaotic one normal deformation.Received 16 February 1994DOI:https://doi.org/10.1103/PhysRevLett.73.777©1994 American Physical Society
The $^{92\text{\ensuremath{-}}96}\mathrm{Zr}$ nuclei were produced as fission fragments following the fusion reactions $^{28}\mathrm{Si}+^{176}\mathrm{Yb}$ and $^{31}\mathrm{P}+^{176}\mathrm{Yb}$ at 145 152 MeV bombarding energy, respectively. Prompt $\ensuremath{\gamma}$ rays emitted in two detected with EUROGAM II EUROBALL IV arrays. Sequences of $\ensuremath{\gamma}$-ray transitions observed coincidence newly assigned to $^{93\text{\ensuremath{-}}96}\mathrm{Zr}$. previously known level...
The five dimensional collective Hamiltonian (5DCH) implemented with Gogny force has been employed in systematic calculations of electric monopole $(E0)$ transitions even-even nuclei masses $30<A<310$. Significant improvements the comparison between experimental data and are achieved using (i) stronger than those inferred from Inglis-Beliaev approximation (ii) $E0$ transition operator as defined by Church Weneser [E. L. J. Weneser, Phys. Rev. 103, 1035 (1956)]. Main emphasis placed on square...
Constrained Hartree-Fock-Bogoliubov calculations based on Gogny's force have been performed to determine the potential energy surfaces, collective masses, and moments of inertia used build a five-dimension Hamiltonian treating quadrupole motion in $^{184,186,188,190}\mathrm{Hg}$ isotopes. Many states predicted at low excitation energy, some them forming \ensuremath{\gamma}-vibrational bands. To expand experimental information \ensuremath{\gamma} bands, high statistics measurements...
Two neutron-rich $N=93$ isotones, $^{155}\mathrm{Sm}$ and $^{153}\mathrm{Nd}$, have been studied by delayed $\ensuremath{\gamma}$-ray conversion-electron spectroscopy at the Lohengrin mass spectrometer. A half-life of 2.9(5) $\ensuremath{\mu}$s has measured for $\ensuremath{\nu}5/{2}^{+}$[642] state 16.5 keV in $^{155}\mathrm{Sm}$. The decay a 1.17(7)-$\ensuremath{\mu}$s isomer 191.7 keV, remeasured its spin reassigned as $(5/2){}^{+}$. This contains strong component Nilsson orbital. In...