Estruturas Nucleares e Reações

M. Romoli, L. Morales-Gallegos, M. Aliotta, C. G. Bruno, R. Buompane, A. D’Onofrio, T. Davinson, M. De Cesare, A. Di Leva, P. Di Meo, J. Duarte, L. Gasques, L. Gialanella, G. Imbriani, G. Porzio, D. Rapagnani e A. Vanzanella

The European Physical Journal A, vol. 54, página 142

ABSTRACT

A new detection array called GASTLY (GAs-Silicon Two-Layer sYstem) has been designed to detect and identify low-energy light particles emitted in nuclear reactions of astrophysical interest. Devoted to the measurement of nanobarn cross-sections, the system is optimised for large solid angle coverage and for low-energy detection thresholds. The array consists of eight modules, each comprising an ionisation chamber and a large area silicon strip detector. Its modularity and versatility allow for use in a variety of experiments. Here we report on the performance of the array as obtained during its commissioning phase with standard α -particle sources and during in-beam tests with an intense 12C beam. Typical energy resolutions ΔE(FWHM)/E of about 3% and 2% were obtained for the ionisation chambers and the silicon detectors, respectively. The status of the development of individual strip readout, based on ASIC technology, is also presented.

10.1140/epja/i2018-12575-5

M. A. G. Alvarez, M. Rodríguez-Gallardo, L. R. Gasques, L. C. Chamon, J. R. B. Oliveira, V. Scarduelli, A. S. Freitas, E. S. Rossi, Jr., V. A. B. Zagatto, J. Rangel, J. Lubian, and I. Padron

Phys. Rev. C 98, 024621 – Published 24 August 2018

ABSTRACT

The 10B+120Sn reaction has been systematically studied at laboratory energies around the Coulomb barrier: ELAB=31.5, 33.5, 35.0, and 37.5 MeV. Cross sections for the elastic scattering and some reaction processes have been measured: excitation to the 1+ state of 10B; excitation to the 2+ and 3−states of 120Sn; and the one-neutron pick-up transfer 120Sn(10B,11B)119Sn. Coupled reaction channel (CRC) calculations have been performed in the context of the double-folding São Paulo potential. The theoretical calculations result in a good overall description of the experimental angular distributions. The effect on the theoretical elastic-scattering angular distributions of couplings to the inelastic and transfer states (through the CRC calculations) and to the continuum states (through continuum-discretized coupled-channels calculations) has been investigated.

DOI:10.1103/PhysRevC.98.024621