Physics of exotic nuclei with the RIBRAS system

• Grant number: 19/02759-0
• Support Opportunities: Regular Research Grants
• Start date: June 01, 2019
• End date: May 31, 2022
• Field of knowledge: Physical Sciences and Mathematics - Physics - Nuclear Physics
• Principal Investigator: Rubens Lichtenthäler Filho
• Grantee: Rubens Lichtenthäler Filho
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated researchers: Alinka Lépine ; André da Silva Serra ; Juan Antonio Alcántara Núñez ; Juan Carlos Zamora Cardona ; Kelly Cristina Cezaretto Pires ; Marlete Pereira Meira de Assuncao ; Valdir Guimarães

Abstract

Studies involving light exotic nuclei are a field of research of great interest since it encompasses new phenomena such as nuclear halo, cluster structures, new magic numbers, even implications on fundamental problems of nuclear astrophysics such as the synthesis of heavy elements. In the RIBRAS system we produce secondary beams of light nuclei such as 6He, 7Be, 8Li, 8B, 10Be, 12B and others. Since 2004 we have carried out experiments involving the collision of several of these nuclei in targets, light, medium and heavy. In this period, a long program of elastic scattering, breakup and neutron transfer reactions in RIBRAS was developed. A further step is being taken to measure other reaction channels such as nuclear fusion and inelastic scattering which are very important for an understanding of structure aspects and reactions involving light exotic projectiles.Currently RIBRAS is a multi-user system that counts on the collaboration of more than 20 researchers from USP-SP, UFF-RJ, UNIFESP and international collaborators.The present project consists of the supply of liquid helium for maintenance of RIBRAS in the period 2019/2020 and the extension of the experimental apparatus for measurements of other reaction channels such as melting and inelastic scattering using a new matching particle-gamma detection system that is in the assembly phase. (AU)

Scientific publications

(8)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SANTOS, O. C. B.; LICHTENTHALER, R.; PIRES, K. C. C.; UMBELINO, U.; ZEVALLOS, E. O. N.; DE LARA, A. L.; SERRA, A. S.; SCARDUELLI, V; ALCANTARA-NUNEZ, J.; GUIMARAES, V; et al. Evidence of the effect of strong stripping channels on the dynamics of the Li-8+Ni-58 reaction. Physical Review C, v. 103, n. 6, JUN 1 2021. (13/22100-7, 19/07767-1, 16/17612-7, 19/02759-0)

LEPINE-SZILY, A.; LICHTENTHAELER, R.. Coupled channels effects in heavy ion reactions. EUROPEAN PHYSICAL JOURNAL A, v. 57, n. 3, MAR 22 2021. (19/07767-1, 13/22100-7, 19/02759-0)

LICHTENTHALER, R.; SANTOS, O. C. B.; SERRA, A.; UMBELINO, U.; PIRES, K. C. C.; OLIVEIRA, J. R. B.; LEPINE-SZILY, A.; DE FARIA, P. N.; MORCELLE, V.. Experiments with A=6-8 exotic beams in RIBRAS. EUROPEAN PHYSICAL JOURNAL A, v. 57, n. 3, MAR 12 2021. (19/07767-1, 19/02759-0)

UMBELINO, U.; LICHTENTHALER, R.; SANTOS, O. C. B.; PIRES, K. C. C.; SERRA, A. S.; SCARDUELLI, V; DE LARA, A. L.; ZEVALLOS, E. O. N.; ZAMORA, J. C.; LEPINE-SZILY, A.; et al. Quasielastic scattering of light radioactive and stable projectiles on 9Be. PHYSICAL REVIEW C, v. 106, n. 5, p. 15-pg., 2022-11-02. (13/22100-7, 19/05769-7, 19/07767-1, 19/02759-0, 16/17612-7)

SANTOS, O. C. B.; LICHTENTHALER, R.; MORO, A. M.; PIRES, K. C. C.; UMBELINO, U.; S. SERRA, A.; ZEVALLO, E. O. N.; DE LARA, A. L.; SCARDUELLI, V.; ALCANTARA-NUNEZ, J.; et al. One-neutron stripping from Li-8 projectiles to Be-9 target nuclei. EUROPEAN PHYSICAL JOURNAL A, v. 59, n. 3, p. 9-pg., 2023-03-16. (19/07767-1, 19/02759-0, 21/12254-3)

KAUR, GURPREET; GUIMARAES, V; ZAMORA, J. C.; ASSUNCAO, M.; ALCANTARA-NUNEZ, J.; DE LARA, A. L.; ZEVALLOS, E. O. N.; RIBEIRO, J. B.; LICHTENTHALER, R.; PIRES, K. C. C.; et al. ew resonances in C-11 above the B-10 + p threshold investigated by inverse kinematic resonant scatterin. PHYSICAL REVIEW A, v. 105, n. 2, FEB 17 2022. (19/07767-1, 18/18241-8, 16/17612-7, 18/04965-4, 19/02759-0)

SANTOS, O. C. B.; OLIVEIRA, J. R. B.; MACCHIONE, E.; LICHTENTHAELER, R.; PIRES, K. C. C.; LEPINE-SZILY, A.. The measurement of the half-life of the second excited state of 237Np with a new detector system and digital electronics. Nuclear Physics A, v. 1040, p. 8-pg., 2023-09-01. (19/07767-1, 19/02759-0, 21/12254-3, 16/04612-9)

SANTOS, O. C. B.; LICHTENTHALER, R.; PIRES, K. C. C.; UMBELINO, U.; ZEVALLOS, E. O. N.; DE LARA, A. L.; SERRA, A. S.; SCARDUELLI, V; ALCANTARA-NUNEZ, J.; GUIMARAES, V; et al. Evidence of the effect of strong stripping channels on the dynamics of the Li-8+Ni-58 reaction. PHYSICAL REVIEW C, v. 103, n. 6, p. 10-pg., 2021-06-01. (19/07767-1, 19/02759-0, 13/22100-7, 16/17612-7)