Fusion hindrance for the positive Q-value system 12C+30Si

F. Galtarossa; A. M. Stefanini; G. Montagnoli; C. L. Jiang; G. Colucci; S. Bottoni; C. Broggini; A. Caciolli; P. Colović; L. Corradi; S. Courtin; R. Depalo; E. Fioretto; G. Fruet; A. Gal; A. Goasduff; M. Heine; S. P. Hu; M. Kaur; T. Mijatović; D. Montanari; F. Scarlassara; E. Strano; S. Szilner; G. X. Zhang

doi:10.1051/epjconf/201716300019

Proceedings

Open Access

E3S Web of Conferences 163, 00019 (2017)
https://doi.org/10.1051/epjconf/201716300019

Fusion hindrance for the positive Q-value system ¹²C+³⁰Si

F. Galtarossa¹^*, A. M. Stefanini¹^**, G. Montagnoli², C. L. Jiang³, G. Colucci², S. Bottoni³, C. Broggini², A. Caciolli², P. Colović⁴, L. Corradi¹, S. Courtin⁵, R. Depalo², E. Fioretto¹, G. Fruet⁵, A. Gal⁵, A. Goasduff¹, M. Heine⁵, S. P. Hu⁶, M. Kaur⁷, T. Mijatović⁴, D. Montanari⁵, F. Scarlassara², E. Strano², S. Szilner⁴ and G. X. Zhang⁸

¹ INFN, Laboratori Nazionali di Legnaro, I-35020 Legnaro (PD), Italy
² Dip. di Fisica e Astronomia, Univ. di Padova, and INFN-PD, I-35131 PD, Italy
³ Physics Division, Argonne National Laboratory, Argonne, IL 60439, USA
⁴ Ruder Bošković Institute Zagreb, Croatia
⁵ IPHC, CNRS-IN2P3, Université de Strasbourg, F-67037 Strasbourg Cedex 2, France
⁶ College of Phys. Sci. and Tech., Shenzhen Univ., Shenzeng, 518060, China
⁷ Department of Physics, Punjab Technical University Jalandhar, Kapurthala, India
⁸ School of Phys. and Nucl. Energy Eng., Beihang Univ., Beijing, 100191, China

^* e-mail: franco.galtarossa@lnl.infn.it
^** e-mail: alberto.stefanini@lnl.infn.it

Published online: 22 November 2017

Abstract

The fusion excitation function for the positive-Q-value system ¹²C+³⁰Si (Q_fus = +14.1 MeV) has been measured in inverse kinematics down to the μb level and compared with standard coupled-channel calculations. The appearance of the fusion hindrance phenomenon and the evidence of a S-factor maximum have been observed. This result can be significant to extrapolate the behavior of lighter astrophysical relevant systems at deep sub-barrier energies, where existing experimental data are still contradicting and affected by large errors.

© The Authors, published by EDP Sciences, 2017

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