F. A. Souza

New measurement of the 11B(p,α0)8Be bare-nucleus S(E) factor via the Trojan horse method

A new measurement of the 11B(p,?0)8Be has been performed applying the Trojan horse method (THM) to the 2H(11B,?80Be)n quasi-free reaction induced at a laboratory energy of 27 MeV. The astrophysical S(E) factor has been extracted from ?600 keV down to zero energy by means of an improved data analysis technique and it has been compared with direct data available in the literature. The range investigated here overlaps with the energy region of the light element LiBeB stellar burning and with that of future aneutronic fusion power plants using the 11B+p fuel cycle. The new investigation described here confirms the preliminary results obtained in the recent TH works. The origin of the discrepancy between the direct estimate of the 11B(p,?0)8Be S(E)-factor at zero energy and that from a previous THM investigation is quantitatively corroborated. The results obtained here support, within the experimental uncertainties, the low-energy S(E)-factor extrapolation and the value of the electron screening potential deduced from direct measurements.

Reaction mechanisms in the 6Li + 59Co system

Abstract The reactions induced by the weakly bound 6 Li projectile interacting with the intermediate mass target 59 Co were investigated. Light charged particles singles and α – d coincidence measurements were performed at the near barrier energies E lab = 17.4 , 21.5, 25.5 and 29.6 MeV. The main contributions of the different competing mechanisms are discussed. A statistical model analysis, Continuum-Discretized Coupled-Channels (CDCC) calculations and two-body kinematics were used as tools to provide information to disentangle the main components of these mechanisms. A significant contribution of the direct breakup was observed through the difference between the experimental sequential breakup cross section and the CDCC prediction for the non-capture breakup cross section.

Measurement of the 10 keV resonance in the B 10 ( p , α 0 ) Be 7 reaction via the Trojan Horse method

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Reaction mechanisms for weakly-bound, stable nuclei and unstable, halo nuclei on medium-mass targets

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Effect of breakup on elastic scattering for theLi6,7+Co59systems

B(p,

6Li direct breakup lifetimes

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Projectile breakup dynamics for 6Li + 59Co : Kinematical analysis of \alpha - d coincidences

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The Trojan horse method in nuclear astrophysics: Recent results

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A triple telescope for the simultaneous identification of light and heavy reaction products

Be bare nucleus astrophysical S(E)-factor has been measured for the first time at energies from about 100 keV down to about 5 keV by means of the Trojan Horse Method (THM). In this energy region, the S(E)-factor is strongly dominated by the 8.699 MeV

Near-Barrier Fusion Induced by Stable Weakly Bound and Exotic Halo Light Nuclei

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