A5081720857- Nuclear physics research studies
- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Astronomical and nuclear sciences
- Nuclear Materials and Properties
- Radiation Detection and Scintillator Technologies
- Atomic and Molecular Physics
- Advanced NMR Techniques and Applications
- Quantum Chromodynamics and Particle Interactions
- Advanced Chemical Physics Studies
- Radiation Therapy and Dosimetry
- Particle Accelerators and Free-Electron Lasers
- Quantum, superfluid, helium dynamics
- Oil and Gas Production Techniques
- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Particle accelerators and beam dynamics
- Particle Detector Development and Performance
- Atomic and Subatomic Physics Research
- Astro and Planetary Science
- Reservoir Engineering and Simulation Methods
- X-ray Spectroscopy and Fluorescence Analysis
- Drilling and Well Engineering
- Superconducting Materials and Applications
- Neutrino Physics Research
GANIL
2019-2025
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2019-2025
Institut National de Physique Nucléaire et de Physique des Particules
2018-2025
Centre National de la Recherche Scientifique
2018-2024
Université Paris-Saclay
2018-2024
Institut de Physique
2018-2024
Universidade Tecnológica Federal do Paraná
2024
Université Paris-Sud
2018-2024
Universidade de Santiago de Compostela
2013-2023
Laboratoire National Henri Becquerel
2020-2023
Neutron-induced reaction cross sections of short-lived nuclei are imperative to understand the origin heavy elements in stellar nucleosynthesis and for societal applications, but their measurement is extremely complicated due radioactivity targets involved. One way overcoming this issue combine surrogate reactions with unique possibilities offered by heavy-ion storage rings. In work, we describe first surrogate-reaction experiment inverse kinematics, which successfully conducted at...
The probabilities for γ-ray and particle emission as a function of the excitation energy decaying nucleus are valuable observables constraining ingredients models that describe deexcitation nuclei near threshold. These essential in nuclear astrophysics applications. In this paper, we have first time simultaneously measured neutron <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mmultiscripts><a:mi>Pb</a:mi><a:mprescripts/><a:none/><a:mn>208</a:mn></a:mmultiscripts></a:math>....
The isotopic-yield distributions and kinematic properties of fragments produced in transfer-induced fission 240Pu fusion-induced 250Cf, with 9 MeV 45 excitation energy respectively, were measured inverse kinematics the spectrometer VAMOS. identified allow to derive scission configuration such as distance between fragments, total kinetic energy, neutron multiplicity, and, for first time, proton- neutron-number sharing during emergence fragments. These point are studied functions fragment...
Inelastic and multinucleon transfer reactions between a ${}^{238}U$ beam, accelerated at 6.14 MeV/u, ${}^{12}C$ target were used for the production of neutron-rich, fissioning systems from U to Cm. A Si telescope, devoted detection targetlike nuclei, provided characterization in atomic mass numbers, as well excitation energy. Cross sections angular excitation-energy distributions measured inelastic channels. Possible excitations nuclei experimentally investigated first time, by means...
Transfer- and fusion-induced fission in inverse kinematics has proved to be a powerful tool investigate nuclear fission, widening information on the fragments access unstable fissioning systems with respect other experimental approaches. An campaign is being carried out at GANIL this technique since 2008. In these experiments, beam of $^{238}\mathrm{U}$, accelerated 6.1 MeV/u, impinges $^{12}\mathrm{C}$ target. Fissioning from U Cf are populated through inelastic scattering, transfer, fusion...
The two fragments produced in fission reactions induced by $^{208}\mathrm{Pb}$ projectiles impinging on a liquid hydrogen target at $500A\phantom{\rule{0.28em}{0ex}}\mathrm{MeV}$ have been fully identified coincidence. experiment was performed GSI Darmstadt, where the combined use of inverse kinematics technique with an efficient detection setup permitted one to detect and identify range from $Z=27$ $Z=52$. corresponding isotopic cross sections velocities were measured high accuracy. results...
The reduced transition probabilities for the 4_{1}^{+}→2_{1}^{+} and 2_{1}^{+}→0_{1}^{+} transitions in ^{92}Mo ^{94}Ru 6_{1}^{+}→4_{1}^{+} ^{90}Zr have been determined this experiment making use of a multinucleon transfer reaction. These results interpreted on basis realistic shell-model calculations f_{5/2}, p_{3/2}, p_{1/2}, g_{9/2} proton valence space. Only combination extensive lifetime information large scale allowed extent seniority conservation N=50 orbital to be understood....
The experimental setup called Medley, has been installed at the Neutrons For Science (NFS) facility GANIL to study production of light-ions in neutron-induced reactions. was first used measure neutron spectral flux from neutron-proton elastic scattering, allowing both an assessment its performance, and providing independent measurement facility. setup, challenges encountered are presented discussed. deduced is compared one obtained a monitor based on position-sensitive parallel plate...
Using the high flux of fast neutron beam provided at Neutrons For Science (NFS) facility GANIL-SPIRAL2, high-resolution \(\gamma \)-ray spectroscopy nuclei produced in (\(n,xn\)) reactions is performed with EXOGAM HPGe array. The by (\(n,2n\)) and (\(n,3n\)) channels \(^{58}\)Ni are re-examined through prompt coincidence neutrons to provide a comprehensive possibly new description its level schemes excitation functions. Abstract Published Jagiellonian University 2025 authors
This work presents the preliminary fragment distributions produced through transfer-induced fission with a \(^{232}\)Th beam, which has been accelerated for first time at GANIL on \(^{12}\)C target. The experimental setup is described, as well newly implemented technique based Machine Learning aiming improving resolution. mass and charge of \(^{244}\)Cm \(^{234}\)U different excitation energies are shown to illustrate capability quality results. Abstract Published by Jagiellonian University...
The Pygmy Dipole Resonance is an exotic excitation mode whose microscopic nature not yet fully understood. By using different probes in inelastic scattering reactions, it possible to obtain complementary information on the character of excited structures. For this reason, very first study a neutron probe has been performed. experiment, focused \(^{140}\)Ce nucleus, took place 2022 at NFS facility GANIL-SPIRAL2. PARIS and MONSTER arrays were used for \(\gamma \)-ray scattered detection,...
Using the high flux of fast neutron beam provided at Neutrons For Science (NFS) facility GANIL-SPIRAL2, resolution γ -ray spectroscopy nuclei produced in (n,xn) reactions is performed with EXOGAM HPGe array. The by (n,2n) and (n,3n) channels 58 Ni are re-examined through prompt coincidence neutrons to provide a comprehensive possibly new description its level schemes excitation functions.
We present the first measurement of ^{47}K(d,pγ)^{48}K transfer reaction, performed in inverse kinematics using a reaccelerated beam ^{47}K. The level scheme ^{48}K has been greatly extended, with nine new bound excited states identified and spectroscopic factors deduced. Uniquely, ^{47}K(d,p) reaction gives access to nuclear that are sensitive interaction protons neutrons widely spaced 1s fp orbitals, respectively. Detailed comparisons SDPF-U SDPF-MU shell-model calculations reveal number...
The use of the inverse kinematics technique and a magnetic spectrometer permits simultaneous measurement proton neutron content full fission fragment distributions. This paper reports new measurements five fissioning systems---$^{238}\mathrm{U},\phantom{\rule{0.16em}{0ex}}^{239}\mathrm{Np},\phantom{\rule{0.16em}{0ex}}^{240}\mathrm{Pu},\phantom{\rule{0.16em}{0ex}}^{244}\mathrm{Cm}$, $^{250}\mathrm{Cf}$---produced in inelastic scattering, transfer, fusion reactions at different excitation...
Reliable neutron-induced-reaction cross sections of unstable nuclei are essential for nuclear astrophysics and applications but their direct measurement is often impossible. The surrogate-reaction method one the most promising alternatives to access these sections. In this work, we successfully applied infer first time both neutron-induced fission radiative capture ^{239}Pu in a consistent manner from single measurement. This was achieved by combining simultaneously measured γ-emission...
Isotopic distributions of fragments from fission the neutron-deficient $^{178}\mathrm{Hg}$ nuclide are reported. This experimental observable is obtained for first time in region around lead using an innovative approach based on inverse kinematics and coincidence between large acceptance magnetic spectrometer $\mathrm{VAMOS}++$ a new detection arm close to target. The average fragment $N/Z$ ratio prompt neutron ${M}_{n}$ multiplicity derived compared with current knowledge actinide fission....
A direct and complete measurement of isotopic fission-fragment yields $^{239}\mathrm{U}$ has been performed for the first time. The fissioning system was produced with an average excitation energy 8.3 MeV in one-neutron transfer reactions between a $^{238}\mathrm{U}$ beam $^{9}\mathrm{Be}$ target at Coulomb barrier energies. fission fragments were detected isotopically identified using VAMOS++ spectrometer GANIL facility. allows us to directly evaluate models energies fast neutrons, which...
Total fission cross sections of $^{208}\mathrm{Pb}$ induced by protons have been determined at $370A,500A$, and $650A$ MeV. The experiment was performed GSI Darmstadt where the combined use inverse kinematics technique with an efficient detection setup allowed us to determine these uncertainty below $6%$. This result achieved accurate beam selection registration both fragments in coincidence which were also clearly distinguished from other reaction channels. These data solve existing...
A complete kinematics measurement of the two fission fragments was used for first time to investigate dynamics at small and large deformations. Fissioning systems with high excitation energies, compact shapes, low angular momenta were produced in inverse by using spallation reactions lead projectiles. new generation experimental setup allowed full unambiguous identification mass atomic number both fragments. This permitted us accurately determine cross sections, charge distribution, neutron...
Nuclear fission is still one of the most complex physical processes we can observe in nature due to interplay macroscopic and microscopic nuclear properties that decide result. An example this coupling presence dissipation as an important ingredient contributes drive dynamics has a clear impact on time process. However, different theoretical interpretations, scarce experimental data make it poorly understood. In letter, present first determination energy function fragment split, for three...
The nuclear level density is one of the main ingredients for statistical description fission process. In this work, we propose to constrain parameter by using reactions induced protons and light ions on $^{208}\text{Pb}$ at high kinetic energies. experiment was performed GSI (Darmstadt), where combined use inverse kinematics technique with an efficient detection setup allowed us measure atomic number two fragments in coincidence. This measurement permitted obtain precision partial cross...
The simultaneous measurement of the isotopic fission-fragment yields and velocities $^{239}\mathrm{U}$ has been performed for first time. fissioning system was produced in one-neutron transfer reactions between a $^{238}\mathrm{U}$ beam at 5.88 MeV/nucleon $^{9}\mathrm{Be}$ target. combination inverse kinematics low energy use $\mathrm{VAMOS}++$ spectrometer GANIL facility allows identification full distribution their velocity reference frame system. proton neutron content fragments...