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Publications récentes

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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 (...)

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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 (...)

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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 (...)

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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 (...)

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Feasibility study for the measurement of πN transition distribution amplitudes at ¯PANDA in ¯pp→J/ψπ0

B. Singh et al. (PANDA collaboration)

Abstract The exclusive charmonium production process in ¯pp annihilation with an associated π0 meson ¯pp→J/ψπ0 is studied in the framework of QCD collinear factorization. The feasibility of measuring this reaction through the J/ψ→e+e− decay channel with the AntiProton ANnihilation at DArmstadt (¯PANDA) experiment is investigated. Simulations on signal reconstruction efficiency as well as the background rejection from various sources including the ¯pp→π+π−π0 and ¯pp→J/ψπ0π0 reactions are performed (...)

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

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