Retour haut de page

Accueil du site > Publications récentes

Publications récentes

Pages-1-2-3-4-5-6-7-8-9-...-19-

Ultrafast-timing lifetime measurements in 94Ru and 96Pd : Breakdown of the seniority scheme in N=50 isotones

I. Matea, D. Verney

Abstract The advanced time-delayed γγ(t) method has been applied to determine half-lives of low-lying states in the N=50 isotones 94Ru and 96Pd. The inferred experimental E2 strengths for the 4+→2+ transitions in the two nuclei show a dramatic deviation with respect to the shell model predictions in the (f5/2,p,g9/2) proton hole space in 100Sn. The anomalous behavior can be ascribed to a breakdown of the seniority quantum number in the πgn9/2 configuration due to particle-hole excitations (...)

Lire la suite


Time-dependent mean-field determination of the excitation energy in transfer reactions : Application to the reaction 238U on 12C at 6.14 MeV/nucleon

G. Scamps, C. Rodríguez-Tajes, D. Lacroix, and F. Farget

Abstract : The internal excitation of nuclei after multinucleon transfer is estimated by using the time-dependent mean-field theory. Transfer probabilities for each channel as well as the energy loss after reseparation are calculated. By combining these two pieces of information, we show that the excitation energy distribution of the transfer fragments can be obtained separately for the different transfer channels. The method is applied to the (...)

Lire la suite


Non-Markovian dynamics of fully coupled fermionic and bosonic oscillators

V. V. Sargsyan, D. Lacroix, G. G. Adamian, and N. V. Antonenko

Abstract : The non-Markovian Langevin approach is applied to study the dynamics of fermionic (bosonic) oscillator linearly coupled to a fermionic (bosonic) environment. The analytical expressions for occupation numbers in two different types of couplings (rotating-wave approximation and fully coupled) are compared and discussed. The weak-coupling and high- and low-temperature limits are considered as well. The conditions under which the environment (...)

Lire la suite


Spectroscopy of 61Fe via the neutron transfer reaction 2H(60Fe,p)61Fe*

S. Giron, F. Hammache, N. de Séréville, P. Roussel, J. Burgender, M. Moukaddam et al.

Abstract : The direct component of the 60Fe(n,γ)61Fe cross section was investigated by populating the bound states of the 61Fe nucleus through the (d,pγ) transfer reaction in inverse kinematics using a radioactive beam of 60Fe at 27A MeV. The experiment was performed at GANIL using the MUST2 array and an annular double-sided silicon strip detector for the detection of the light charged particle in coincidence with the photons measured in (...)

Lire la suite


Time-of-flight secondary ion mass spectrometry imaging of biological samples with delayed extraction for high mass and high spatial resolutions

Quentin P. Vanbellingen, Nicolas Elie, Michael J. Eller, Serge Della-Negra, David Touboul, Alain Brunelle

Abstract Rationale In Time-of-Flight Secondary Ion Mass Spectrometry (TOF-SIMS), pulsed and focused primary ion beams enable mass spectrometry imaging, a method which is particularly useful to map various small molecules such as lipids at the surface of biological samples. When using TOF-SIMS instruments, the focusing modes of the primary ion beam delivered by liquid metal ion guns can provide either a mass resolution of several thousand or a sub-µm lateral resolution, but the (...)

Lire la suite



 

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