Study of structure and nuclear reactions induced by exotic nuclei using active targets

• Grant number: 18/04965-4
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Effective date (Start): September 01, 2018
• Effective date (End): July 31, 2021
• Field of knowledge: Physical Sciences and Mathematics - Physics - Nuclear Physics
• Principal Investigator: Valdir Guimarães
• Grantee: Juan Carlos Zamora Cardona
• Host Institution: Instituto de Física (IF). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 16/17612-7 - Dynamics of many-body systems IV, AP.TEM

Abstract

In this project we are proposing to investigate halo and cluster structure of unstable nuclei using direct and fusion reactions measurements with radioactive ion beams. Halo and cluster structures, present in exotic nuclei, are among the most exciting phenomena observed in nuclei far away from the valley of stability. These nuclei are weakly bound and can exhibit large radial extensions and exotic structures in which the spatial and momentum distribution of the valence particles are very different from normal nuclei. We are proposing to perform experiments induced by light radioactive projectiles at Texas A&M University (TAMU) as well as at Instituto de Física da Universidade de São Paulo (IFUSP). At TAMU we propose to perform fusion experiments for the 6, 7, 8Li and 8B+40Ar systems with the active target TexAT. This device allows the use of a gas as a target medium and detector at the same time and can provide a simultaneously measurement of elastic scattering, breakup and fusion reactions channels in the same experiment. The radioactive beams of 8Li and 8B, at few MeV/u, will be produced by the recoil separator MARS and K500/K150 Superconducting Cyclotron at TAMU. We are also planning to perform experiments in São Paulo related to elastic scattering induced by radioactive 10Be and 12B beams using the RIBRAS system. (AU)

Scientific publications

(17)

(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)

TITUS, E. R.; NEY, E. M.; ZEGERS, R. G. T.; BAZIN, D.; BELARGE, J.; BENDER, P. C.; BROWN, B. A.; CAMPBELL, C. M.; ELMAN, B.; ENGEL, J.; et al. Constraints for stellar electron-capture rates on Kr-86 via the Kr-86(t, He-3 + gamma)Br-86 reaction and the implications for core-collapse supernovae. Physical Review C, v. 100, n. 4, OCT 22 2019. (18/04965-4)

GAO, B.; ZEGERS, R. G. T.; ZAMORA, J. C.; BAZIN, D.; BROWN, B. A.; BENDER, P.; CRAWFORD, H. L.; ENGEL, J.; FALDUTO, A.; GADE, A.; et al. Gamow-Teller transitions to Zr-93 via the Nb-93(t, He-3 + gamma) reaction at 115 MeV/u and its application to the stellar electron-capture rates. Physical Review C, v. 101, n. 1, JAN 10 2020. (18/04965-4)

ZAMORA, J. C.; SULLIVAN, C.; ZEGERS, R. G. T.; AOI, N.; BATAIL, L.; BAZIN, D.; CARPENTER, M.; CARROLL, J. J.; DELONCLE, I.; FANG, Y. D.; et al. Reexamination of isoscalar giant resonances in C-12 and Nb-93 through Li-6 scattering. PHYSICAL REVIEW C, v. 101, n. 6, p. 8-pg., 2020-06-11. (18/04965-4)

GAO, B.; ZEGERS, R. G. T.; ZAMORA, J. C.; BAZIN, D.; BROWN, B. A.; BENDER, P.; CRAWFORD, H. L.; ENGEL, J.; FALDUTO, A.; GADE, A.; et al. Gamow-Teller transitions to Zr-93 via the Nb-93(t, He-3 + gamma) reaction at 115 MeV/u and its application to the stellar electron-capture rates. PHYSICAL REVIEW C, v. 101, n. 1, p. 10-pg., 2020-01-10. (18/04965-4)

ZAMORA, J. C.; SULLIVAN, C.; ZEGERS, R. G. T.; AOI, N.; BATAIL, L.; BAZIN, D.; CARPENTER, M.; CARROLL, J. J.; FANG, Y. D.; FUJITA, H.; et al. Investigation of the isoscalar response of Mg-24 to Li-6 scattering. Physical Review C, v. 104, n. 1, JUL 7 2021. (18/04965-4, 16/17612-7)

CHAMON, L. C.; GASQUES, L. R.; ZAMORA, J. C.. Role of inelastic couplings in He-4+Pb-208 elastic scattering in a wide energy range. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, v. 49, n. 3, MAR 1 2022. (18/04965-4, 19/05769-7, 18/09998-8, 19/07767-1)

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. HYSICAL REVIEW, v. 105, n. 2, FEB 17 2022. (19/07767-1, 18/18241-8, 16/17612-7, 18/04965-4, 19/02759-0)

WANG, K.; YANG, Y. Y.; MORO, A. M.; GUIMARAES, V; LEI, JIN; PANG, D. Y.; DUAN, F. F.; LOU, J. L.; ZAMORA, J. C.; WANG, J. S.; et al. Elastic scattering and breakup reactions of the proton drip-line nucleus B-8 on Pb-208 at 238 MeV. Physical Review C, v. 103, n. 2, FEB 3 2021. (16/17612-7, 18/04965-4)

ZAMORA, J. C.; SULLIVAN, C.; ZEGERS, R. G. T.; AOI, N.; BATAIL, L.; BAZIN, D.; CARPENTER, M.; CARROLL, J. J.; DELONCLE, I.; FANG, Y. D.; et al. Reexamination of isoscalar giant resonances in C-12 and Nb-93 through Li-6 scattering. Physical Review C, v. 101, n. 6, JUN 11 2020. (18/04965-4)

ZAMORA, J. C.; FERREIRA, J. L.; BARIONI, A.; CARDOZO, E. N.; ABRIOLA, D.; ARAZI, A.; ASSUNCAO, M.; DE BARBARA, E.; CARDONA, M. A.; GUIMARAES, V; et al. Role of direct mechanism in two-nucleon T=0 transfer reactions in light nuclei using the (Li-6, alpha) probe. PHYSICAL REVIEW C, v. 106, n. 1, p. 14-pg., 2022-07-05. (18/04965-4, 19/07767-1, 16/17612-7)

TITUS, E. R.; NEY, E. M.; ZEGERS, R. G. T.; BAZIN, D.; BELARGE, J.; BENDER, P. C.; BROWN, B. A.; CAMPBELL, C. M.; ELMAN, B.; ENGEL, J.; et al. Constraints for stellar electron-capture rates on Kr-86 via the Kr-86(t, He-3 + gamma)Br-86 reaction and the implications for core-collapse supernovae. PHYSICAL REVIEW C, v. 100, n. 4, p. 14-pg., 2019-10-22. (18/04965-4)

ZAMORA, J. C.; GUIMARAES, V.; ROGACHEV, G. V.; AHN, S.; LUBIAN, J.; CARDOZO, E. N.; ABOUD, E.; ASSUNCAO, M.; BARBUI, M.; BISHOP, J.; et al. Direct fusion measurement of the B-8 proton-halo nucleus at near-barrier energies. Physics Letters B, v. 816, MAY 10 2021. (16/17612-7, 19/07767-1, 18/04965-4)

CHAMON, L. C.; GASQUES, L. R.; ZAMORA, J. C.. Effect of thousands of inelastic couplings on the elastic scattering channel. JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, v. 47, n. 10, p. 23-pg., 2020-10-01. (19/07767-1, 18/04965-4, 19/05769-7, 18/09998-8)

RANDHAWA, J. S.; AYYAD, Y.; MITTIG, W.; MEISEL, Z.; AHN, T.; AGUILAR, S.; ALVAREZ-POL, H.; BARDAYAN, D. W.; BAZIN, D.; BECEIRO-NOVO, S.; et al. First Direct Measurement of Mg-22(alpha,p)Al-25 and Implications for X-Ray Burst Model-Observation Comparisons. Physical Review Letters, v. 125, n. 20, NOV 10 2020. (18/04965-4)

FORTINO, G. F.; ZAMORA, J. C.; TAMAYOSE, L. E.; HIRATA, N. S. T.; GUIMARAES, V. Digital signal analysis based on convolutional neural networks for active target time projection chambers. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SP, v. 1031, p. 7-pg., 2022-05-11. (18/04965-4, 19/07767-1, 16/17612-7)

ZAMORA, J. C.; FORTINO, G. F.. Tracking algorithms for TPCs using consensus-based robust estimators. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SP, v. 988, FEB 1 2021. (16/17612-7, 18/04965-4, 19/07767-1)

SCHMITT, J.; KING, G. B.; ZEGERS, R. G. T.; AYYAD, Y.; BAZIN, D.; BROWN, B. A.; CARLS, A.; CHEN, J.; DAVIS, A.; DENUDT, M.; et al. Probing spin-isospin excitations in proton-rich nuclei via the 11C(p, n)11N reaction. PHYSICAL REVIEW C, v. 106, n. 5, p. 10-pg., 2022-11-23. (18/04965-4, 16/17612-7)