Présidents de session
Nuclear Physics & Interdisciplinaire
- Diego Gruyer (LPC Caen)
Nuclear Physics & Interdisciplinaire
- Diego Gruyer (LPC Caen)
Nuclear Physics & Interdisciplinaire
- Diego Gruyer (LPC Caen)
Les systèmes nucléaires présentent une grande diversité de propriétés prouvant la complexité de leur structure. Cette complexité est héritée de plusieurs phénomènes, le premier étant lié à la structure interne des protons et neutrons en termes de quarks et gluons. Ainsi, la théorie sous-jacente de la chromodynamique quantique (QCD) joue un rôle primordial dans la description des noyaux....
Exploring the fission properties of nuclei in the actinide region has revealed that the symmetric division of the nuclei into two equal masses was not the only mode of fission. It was observed that the fission of actinides preferably produced Fission Fragments (FFs) of unequal mass numbers, which was thought to originate from the strong spherical shell effects present in the FFs by the doubly...
First-forbidden beta decays play an important role in several domains of physics. First, in astrophysics, where nuclear data such as the half-life govern stellar evolution and nucleosynthesis [1]. Second, they are of interest for nuclear reactors physics as first highlighted in 2014 [2]. In first-forbidden $\beta$-decays, the form factor of the leptonic spectra are not equal to one as for...
Most of the heavy nuclei in the Universe (Z > 26) are formed by neutron captures during the so-called s- or r-processes. However, 35 proton-rich nuclei imply the existence of another process of nucleosynthesis, the p-process, which takes place in explosive stellar events. The modeling of this process relies on theoretical calculations of nuclear reaction rates. One of the main uncertainties...
A Bayesian analysis of the possible behaviors of the dense matter equation of state informed through recent LIGO-Virgo as well as NICER measurements reveals that all the present observations are compatible with a fully nucleonic hypothesis for the composition of dense matter, even in the core of the most massive pulsar PSR J0740+6620. Under the hypothesis of a nucleonic composition, we extract...
Many molecules are spread in the earth atmosphere and observed as components of aerosol since the industrial revolution. Besides, some organic molecules such as pyridine evidence a significantly increased atmospheric concentration but are not observed as components of the atmospheric aerosols. Pyridine (C5H5N) is a hydrophobic molecule and the pyridinium-water clusters are of interest since...
The presence of clouds of methanol in the interstellar medium (ISM) has been evidenced recently by the ALMA (Atacama Large Millimeter Array) radiotelescope. The high abundance of such organic molecule shows its remarkable persistence despite being exposed to the energetic radiation in interstellar space. Indeed, radiation impact can lead to dissociation of the molecule but can also open...
A variety of laser-based applications has been developed since its invention in 1960s, among them is mass spectroscopy. A wavelength tunable laser radiation can selectively excite quantum transitions in atoms and molecules. A majority of laser spectroscopy methods are based on this resonance laser-matter interaction where resonant excitation and subsequent ionization of atoms is done using a...
L’approche théranostique est un nouveau paradigme de la médecine nucléaire qui consiste à utiliser quand c’est possible, un même radioélément pour réaliser le diagnostic et la thérapie et ainsi à personnaliser les traitements de chaque patient. Un quadruplet de terbium répond à cette attente : Tb-149 (α-thérapie ), Tb-160 ( β-thérapie) , Tb-152 (tomographie par émission de positons) et Tb-155...
