0000000000866814

AUTHOR

G. Bocchi

showing 3 related works from this author

Evidence of octupole-phonons at high spin in 207Pb

2019

A lifetime measurement of the 19/2 state in Pb has been performed using the Recoil Distance Doppler-Shift (RDDS) method. The nuclei of interest were produced in multi-nucleon transfer reactions induced by a Pb beam impinging on a Mo enriched target. The beam-like nuclei were detected and identified in terms of their atomic mass number in the VAMOS++ spectrometer while the prompt γ rays were detected by the AGATA tracking array. The measured large reduced transition probability B(E3,19/2→13/2)=40(8) W.u. is the first indication of the octupole phonon at high spin in Pb. An analysis in terms of a particle-octupole-vibration coupling model indicates that the measured B(E3) value in Pb is compa…

Nuclear and High Energy PhysicsPlunger devicePhononNuclear TheoryOctupole phonon[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]gamma-Ray trackingγ -Ray tracking01 natural sciences7. Clean energyRecoilVAMOS++ spectrometerAGATA spectrometer; Nuclear deformation; Octupole phonon; Plunger device; VAMOS++ spectrometer; γ-Ray tracking0103 physical sciencesPhysics::Atomic PhysicsAGATA spectrometerNuclear Experiment010306 general physicsSpin (physics)PhysicsVAMOS plus plus spectrometer010308 nuclear & particles physicsγ-Ray trackinglcsh:QC1-999Nuclear deformationAtomic physicslcsh:Physics
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Probing the nature of particle–core couplings in 49Ca with γ spectroscopy and heavy-ion transfer reactions

2011

Neutron rich nuclei around 48Ca have been measured with the CLARA–PRISMA setup, making use of 48Ca on 64Ni binary reactions, at 5.9 MeV/A. Angular distributions of γ rays give evidence, in several transfer channels, for a large spin alignment (≈70%) perpendicular to the reaction plane, making it possible to firmly establish spin and parities of the excited states. In the case of 49Ca, states arising from different types of particle–core couplings are, for the first time, unambiguously identified on basis of angular distribution, polarization and lifetime measurements. Shell model and particle–vibration coupling calculations are used to pin down the nature of the states. Evidence is found fo…

CouplingPhysicsNuclear and High Energy PhysicsPhononMagnetic spectrometerPolarization (waves)Multi-nucleon transferGamma spectroscopyExcited stateNeutronGamma spectroscopyParticle–core couplingMulti-nucleon transfer ; Gamma spectroscopy ; Magnetic spectrometer ; Particle–core couplingAtomic physicsSpectroscopyExcitationPhysics Letters B
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Reaction dynamics and nuclear structure studies via deep inelastic collisions with heavy-ions: spin and parity assignment in49Ca

2011

The population and gamma decay of neutron rich nuclei around 48Ca has been measured at Legnaro National Laboratory with the PRISMA-CLARA setup, using deep-inelastic collisions (DIC) on 64Ni, at an energy approximately twice the Coulomb barrier. The reaction properties of the main products are investigated, focusing on total cross sections and angular distributions both integrated in energy and associated to the population of specific excited states. Gamma spectroscopy studies are also performed, giving evidence, for the first time in transfer reactions with heavy ions, of a large spin alignment (~70%), perpendicular to the reaction plane. This makes possible the use of angular distributions…

PhysicsHistoryeducation.field_of_studyPopulationInelastic collisionGamma rayCoulomb barrierComputer Science ApplicationsEducationReaction dynamicsExcited stateNeutronAtomic physicsNuclear ExperimentNucleoneducation
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