L. Lalanne
A5057357269- Nuclear physics research studies
- Atomic and Molecular Physics
- Nuclear Physics and Applications
- Advanced Chemical Physics Studies
- Inorganic Fluorides and Related Compounds
- Advanced NMR Techniques and Applications
- Astronomical and nuclear sciences
- Quantum Chromodynamics and Particle Interactions
- Nuclear reactor physics and engineering
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum, superfluid, helium dynamics
- Spectroscopy and Laser Applications
- Ion-surface interactions and analysis
- French Urban and Social Studies
- Quantum chaos and dynamical systems
- Particle Accelerators and Free-Electron Lasers
- Quantum and Classical Electrodynamics
- Astro and Planetary Science
- Radiation Detection and Scintillator Technologies
- Urban Agriculture and Sustainability
- Agriculture and Rural Development Research
- Optical properties and cooling technologies in crystalline materials
- Advanced X-ray Imaging Techniques
- Particle physics theoretical and experimental studies
- Luminescence Properties of Advanced Materials
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie
2021-2025
GANIL
2021-2025
KU Leuven
2023-2025
Université Paris-Saclay
2021-2024
Institut National de Physique Nucléaire et de Physique des Particules
2021-2024
Centre National de la Recherche Scientifique
2021-2024
European Organization for Nuclear Research
2024
Institut Pluridisciplinaire Hubert Curien
2024
Commissariat à l'Énergie Atomique et aux Énergies Alternatives
2021-2024
CEA Paris-Saclay
2021
Abstract Highly accurate and precise electronic structure calculations of heavy radioactive atoms their molecules are important for several research areas, including chemical, nuclear, particle physics. Ab initio quantum chemistry can elucidate structural details in these systems that emerge from the interplay relativistic electron correlation effects, but large number electrons complicates calculations, scarcity experiments prevents insightful theory-experiment comparisons. Here we report...
The last proton bound calcium isotope $^{35}\mathrm{Ca}$ has been studied for the first time, using $^{37}\mathrm{Ca}(p,t)^{35}\mathrm{Ca}$ two neutron transfer reaction. radioactive $^{37}\mathrm{Ca}$ nuclei, produced by LISE spectrometer at GANIL, interacted with protons of liquid hydrogen target CRYPTA, to produce tritons $t$ that were detected in MUST2 detector array, coincidence heavy residues Ca or Ar. atomic mass and energy its $3/{2}^{+}$ state are reported. A large $N=16$ gap...
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...
Detailed spectroscopy of the neutron-deficient nucleus $^{36}$Ca was obtained up to 9 MeV using $^{37}$Ca($p$,$d$)$^{36}$Ca and $^{38}$Ca($p$,$t$)$^{36}$Ca transfer reactions. The radioactive nuclei, produced by LISE spectrometer at GANIL, interacted with protons liquid Hydrogen target CRYPTA, produce light ejectiles (the deuteron $d$ or triton $t$) that were detected in MUST2 detector array, coincidence heavy residues %identified a zero degree detection system. %States have been measured...
The unbound nucleus ${}^{15}$F was studied in proton-induced reactions on ${}^{14}$O, producing three narrow resonances above the 2$p$ decay threshold ${}^{15}$F. In comparison to calculations that account for particle continuum, it found properties of these are determined by proximity proton channels rather than carrying imprint ${}^{14}$O$({0}^{+})+1p$ configurations. Systematic investigations such unstable nuclei will open new perspectives studies effective interactions nuclear quantum systems.
The relative cross sections for radioactive negative ion production via double electron capture have been measured collisions between a 40 keV projectile beam of uranium-238 and potassium vapor. This was performed at the collinear resonance ionization spectroscopy (CRIS) experiment CERN-ISOLDE is step towards measuring affinities (EAs) elements that cannot be efficiently produced in sources (RIB) facilities. includes short-lived isotopes low quantities heavy superheavy systematically smaller...
We report the spectroscopy of 11 electronic states in radioactive molecule radium monofluoride (RaF). The observed excitation energies are compared with state-of-the-art relativistic Fock-space coupled cluster (FS-RCC) calculations, which achieve an agreement >99.71% (within ~8 meV) for all states. High-order electron correlation and quantum electrodynamics corrections found to be important at energies. Establishing accuracy calculations is step towards high-precision studies these...
Missing mass spectroscopy of the unbound $^{8}\mathrm{C}$ nucleus was performed by one-neutron transfer $^{9}\mathrm{C}(p,d)^{8}\mathrm{C}$ reaction at 55 MeV/nucleon. Besides known ground state, two new resonant states were observed, first an excitation energy 3.40(25) MeV with a width 3.0(5) MeV, second 18.6(5) 3.9(11) MeV. Spin and parity ${J}^{\ensuremath{\pi}}={2}^{+}$ assigned to resonance from distorted-wave Born approximation analysis experimental differential cross section. The...
Les jardins potagers contribuent à l’autonomie alimentaire des territoires. Depuis longtemps déjà, les sont au cœur dynamiques sociales et alimentaires dans politiques villes, petites ou grandes, pays du Sud comme Nord. Un regard nouveau peut être porté sur eux, car ils combinent l’ensemble propriétés d’un objet territorialement ancré s’inscrivent processus d’actions collectives alimentaires. La multifonctionnalité jardins, motivations jardiniers, pratiques de production sociabilité ont été...
A recent sensitivity study has shown that the $^{35}$K$(p,\gamma)^{36}$Ca reaction is one of ten $(p,\gamma)$ rates could significantly impact shape calculated X-ray burst light curve. In this work, we propose to reinvestigate rate, as well related uncertainties, by determining energies and decay branching ratios $^{36}$Ca levels, within Gamow window, in 0.5 2 GK temperature range. These properties were studied using neutron pick-up transfer $^{37}$Ca$(p,d)^{36}$Ca inverse kinematics a...
The radiative lifetime of the <a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:mi>A</a:mi><a:mspace width="0.16em"/><a:mmultiscripts><a:mi mathvariant="normal">Π</a:mi><a:mrow><a:mn>1</a:mn><a:mo>/</a:mo><a:mn>2</a:mn></a:mrow><a:none/><a:mprescripts/><a:none/><a:mn>2</a:mn></a:mmultiscripts></a:mrow></a:math> <d:math xmlns:d="http://www.w3.org/1998/Math/MathML"><d:mrow><d:mo>(</d:mo><d:mi>v</d:mi><d:mo>=</d:mo><d:mn>0</d:mn><d:mo>)</d:mo></d:mrow></d:math> state in radium...
Rapid progress in the experimental control and interrogation of molecules, combined with developments precise calculations their structure, are enabling new opportunities investigation nuclear particle physics phenomena. Molecules containing heavy, octupole-deformed nuclei such as radium particular interest for studies, offering an enhanced sensitivity to properties fundamental particles interactions. Here, we report precision laser spectroscopy measurements theoretical structure radioactive...
The ionization potential (IP) of radium monofluoride (RaF) was measured to be 4.969(2)[10] eV, revealing a relativistic enhancement in the series alkaline earth monofluorides. results are agreement with coupled-cluster prediction 4.969[7] incorporating up quantum electrodynamics corrections. Using same computational methodology, an improved calculation for dissociation energy ($D_{e}$) 5.56[5] eV is presented. This confirms that joins small group diatomic molecules which $D_{e}>\mathrm{IP}$,...
This paper reports on the measurement of ground-state spin and nuclear magnetic dipole moment $^{61}$Cr. The radioactive ion beam was produced at CERN-ISOLDE facility probed using high-resolution resonance ionization laser spectroscopy with CRIS apparatus. present $I = \frac{1}{2}$, differing from previously adopted =(\frac{5}{2})$, has significant consequences interpretation existing beta decay data structure in region. shape $^{61}$Cr is interpreted state-of-the-art Large-Scale Shell Model...
Abstract The $$\beta $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mi>β</mml:mi> </mml:math> -delayed $$\gamma <mml:mi>γ</mml:mi> spectroscopy of $$^{81}$$ <mml:msup> <mml:mrow /> <mml:mn>81</mml:mn> </mml:msup> As has been performed using a purified beam Ge $$(9/2^+)$$ <mml:mrow> <mml:mo>(</mml:mo> <mml:mn>9</mml:mn> <mml:mo>/</mml:mo> <mml:mn>2</mml:mn> <mml:mo>+</mml:mo> <mml:mo>)</mml:mo> </mml:mrow> ground state at the Ion Guide Isotope Separator On-Line facility...
Abstract The discrepancy between shell-model calculations and intermediate-energy Coulomb excitation measurements in 46 Ar still stands as an unsolved puzzle understanding the N = 28 shell evolution. This phenomenon has significant relevance considering remarkable achievements of model SDPF-U interaction region which is able to predict fading gap neutron-rich 44 S. Recent narrowed down this overestimation proton amplitude quadrupole transition matrix element. current work aims propose a...
The structure of the unbound $^{15}$F nucleus is investigated using inverse kinematics resonant scattering a radioactive $^{14}$O beam impinging on CH$_2$ target. analysis $^{1}$H($^{14}$O,p)$^{14}$O and $^{1}$H($^{14}$O,2p)$^{13}$N reactions allowed confirmation previously observed narrow $1/2^{-}$ resonance, near two-proton decay threshold, identification two new 5/2$^{-}$ 3/2$^{-}$ resonances. newly levels by 1p emission to ground $^{14}$O, sequential 2p state (g.s.) $^{13}$N via $1^-$...