Retour haut de page

Actualités et Faits Marquants

Mesures de masse : l’IPN participe à des expériences originales menées à RIKEN-RIBF

Mass Measurements IPN collaborates on first direct mass measurements around Z=100 with a Multireflection Time of Flight Mass Spectrograph (MRTOF-MS) at RIKEN-RIBF One of the most important features of superheavy nuceli (SHE) is the appearance of an "island of stability" where shape and shell (...)

Lire la suite



L’IPN a livré les klystrons du projet FAIR à GSI

Dans le cadre du projet FAIR, un linac proton (pLinac) est prévu pour accélérer les protons jusqu’à 70 MeV. La durée du pulse faisceau est de 70 µs et le courant pendant l’impulsion est de 70 mA.. Le linac se composera d’un RFQ et de 6 cavités Crossed-bar-H (CH) accélérant le faisceau jusqu’à son énergie (...)

Lire la suite



First Exclusive Measurement of Deeply Virtual Compton Scattering off 4He : Toward the 3D Tomography of Nuclei

M. Hattawy et al. (CLAS Collaboration), Phys. Rev. Lett. 119, 202004 (2017) A wealth of information on the structure of matter lies in the correlations between the momentum and spatial distributions of the fundamental constituents of matter : quarks and gluons. These correlations are (...)

Phys. Rev. Lett. 119, 202004 (2017)

Lire la suite



Comprendre le processus de quasi-fission : Une étape essentielle pour la synthèse de nouveaux éléments super-lourds

Au cours d’une expérience réalisée auprès de l’accélérateur cryogénique de l’Australian National University (Canberra, Australie), une collaboration franco-australienne1 a pour la première fois identifié simultanément en masse et en numéro atomique Z jusqu’au plutonium, les fragments créés dans des (...)

PHYS. REV. LETT. 119, 222502 (2017)

Lire la suite



GROUND-STATE PROPERTIES OF UNITARY BOSONS : FROM CLUSTERS TO MATTER [1]

"One of the most important properties of nuclei is saturation : although nuclear interactions are attractive overall, the growth in binding energy tapers off as the number of nucleons in the nucleus increases. As a consequence, heavy nuclei have some properties of a liquid drop. The simplest (...)

PHYS. REV. LETT. 119, 223002 (2017)

Lire la suite



L’IPN d’Orsay concourt à la première spectroscopie du 79Cu effectuée avec succès à Riken

D’importants réarrangements de la structure nucléaire ont été observés ces dernières années pour certains noyaux loin de la vallée de stabilité, menant à des nombres magiques parfois différents de ceux des noyaux stables. Le noyau 78Ni, avec 28 protons et 50 neutrons, est la pierre angulaire de la (...)

Phys. Rev. Lett. 119, 192501 (2017)

Lire la suite



Publications récentes

Electric dipole strength and dipole polarizability in 48Ca within a fully self-consistent second random–phase approximation

The second random–phase–approximation model corrected by a subtraction procedure designed to cure double counting, instabilities, and ultraviolet divergences, is employed for the first time to analyze the dipole strength and polarizability in 48Ca. All the terms of the residual interaction (...)

D. Gambacurta, M. Grasso, O. Vasseur

Lire la suite



Single-particle strength from nucleon transfer in oxygen > isotopes : Sensitivity to model parameters

In the analysis of transfer reaction data to extract nuclear structure information the choice of input parameters to the reaction model such as distorting potentials and overlap functions has a significant impact. In this paper we consider a set of data for the (d,t) and (d,3He) reactions on (...)

F. Flavigny, N. Keeley, A. Gillibert, and A. Obertelli

Lire la suite



Violent fluctuations in fluids of neutrons and protons explain how atomic nuclei disintegrate

Perturbing fluids of neutrons and protons (nuclear matter) may lead, as the most catastrophic effect, to the rearrangement of the fluid into clusters of nucleons. A similar process may occur in a single atomic nucleus undergoing a violent perturbation, like in heavy-ion collisions tracked (...)

P. Napolitani and M. Colonna

Lire la suite



Unexpected high-energy γ emission from decaying exotic nuclei

The N = 52 83Ga β decay was studied at ALTO. The radioactive 83Ga beam was produced through the ISOL photofission technique and collected on a movable tape for the measurement of γ -ray emission following β decay. While β-delayed neutron emission (...)

A. Gottardo, D. Verney, I. Deloncle, S. Péru, C. Delafosse, S. Roccia, I. Matea, C. Sotty, C. Andreoiu, C. Costache, M.-C. Delattre, A. Etilé, S. Franchoo, C. Gaulard, J. Guillot, F. Ibrahim, M. Lebois, M. MacCormick, N. Marginean, R. Marginean, M. Martini, C. Mihai, I. Mitu, L. Olivier, C. Portail, L. Qi, B. Roussière, L. Stan, D. Testov, J. Wilson, D.T. Yordanov

Lire la suite



Narrow exotic tetraquark mesons in large-N_c QCD

Discussing four-point Green functions of bilinear quark currents in large-N_c QCD, we formulate rigorous criteria for selecting diagrams appropriate for the analysis of potential tetraquark poles. We find that both flavor-exotic and cryptoexotic (i.e., flavor-nonexotic) tetraquarks, if such (...)

Hagop Sazdjian

Lire la suite



Delta(1232) Dalitz decay in proton-proton collisions at T=1.25 GeV measured with HADES at GSI

We report on the investigation of Δ(1232) production and decay in proton-proton collisions at a kinetic energy of 1.25 GeV measured with HADES. Exclusive dilepton decay channels ppe+e− and ppe+e−γ have been studied and compared with the partial-wave analysis of the hadronic ppπ0 channel. They allow (...)

Lire la suite



Lee-Yang–inspired functional with a density-dependent neutron-neutron scattering length

Inspired by the low-density Lee-Yang expansion for the energy of a dilute Fermi gas of density ρ and momentum kF, we introduce here a Skyrme-type functional that contains only s-wave terms and provides, at the mean-field level, (i) a satisfactory equation of state (...)

M. Grasso, D. Lacroix, and C. J. Yang

Lire la suite



60 ans IPN Orsay/LAL

À noter

PHENIICS Fest - Edition 2018

May 28-29, 2018 – LAL, bât.200

PHENIICS Fest is a two day event organized by the students, for students of the Ecole Doctorale. This year, the event will be held on the (...)

Ecole Joliot-Curie 2018 (EJC2018)

October 7-12, La Grande Motte

The 37th edition of the Joliot-Curie International School, entitled "Correlataions between partons in nuclear systems" will cover the essential (...)


Séminaires

Can one sum up all Feynman diagrams for the unitary Fermi gas ?

Felix Werner

Laboratoire Kastler Brossel

le 23/05/2018 à 11:30

IPN Orsay, salle A015, bâtiment 100

Neutrinoless double beta decay in effective field theory

Jordy de Vries

NIKHEF Amsterdam

le 24/05/2018 à 11:00

IPN Orsay, salle A015, bâtiment 100

Compressed Baryonic Matter

Joachim Stroth

Goethe University - GSI Darmstadt

le 24/05/2018 à 14:00

IPN Orsay, salle des Conseils, bâtiment 100


Offres d’emplois


Stages et thèses

il y a 17 offres



 

IPN

Institut de Physique Nucléaire Orsay - 15 rue Georges CLEMENCEAU - 91406 ORSAY (FRANCE)
UMR 8608 - CNRS/IN2P3

Ce site est optimisé pour les navigateurs suivants Firefox, Chrome, Internet explore 9