Direct fusion measurement of the B-8 proton-halo nucleus at near-barrier energies

Author(s):Show less -

Zamora, J. C. ^[1] ; Guimaraes, V. ^[1] ; Rogachev, G. V. ^{[2, 3]} ; Ahn, S. ^[2] ; Lubian, J. ^[4] ; Cardozo, E. N. ^[4] ; Aboud, E. ^{[2, 3]} ; Assuncao, M. ^[5] ; Barbui, M. ^[2] ; Bishop, J. ^{[2, 3]} ; Bosh, A. ^{[2, 3]} ; Hooker, J. ^{[2, 3]} ; Hunt, C. ^{[2, 3]} ; Jayatissa, H. ^{[2, 3]} ; Koshchiy, E. ^[2] ; Lukyanov, S. ^[6] ; O'Dwyer, R. ^{[2, 3]} ; Penionzhkevich, Y. ^[6] ; Roeder, B. T. ^[2] ; Saastamoinen, A. ^[2] ; Upadhyayula, S. ^{[2, 3]}

Affiliation

^[1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo, SP - Brazil

^[2] Texas A&M Univ, Cyclotron Inst, College Stn, TX 77843 - USA

^[3] Texas A&M Univ, Dept Phys & Astron, College Stn, TX 77843 - USA

^[4] Univ Fed Fluminense, Inst Fis, BR-24210340 Niteroi, RJ - Brazil

^[5] Univ Fed Sao Paulo, Dept Fis, BR-09913030 Diadema, SP - Brazil

^[6] Joint Inst Nucl Res, RU-141980 Dubna - Russia

• Document type: Journal article
• Source: Physics Letters B; v. 816, MAY 10 2021.
• Web of Science Citations: 0

Abstract

Direct measurements of the total fusion cross section for B-8+Ar-40 were achieved with the active target technique. The fusion excitation function was extracted at energies near the Coulomb barrier. The cross section is well described by a coupled reaction channels calculation. The data were compared with previous B-8 fusion experiments on Si-28 and Ni-58 targets. No evidence of striking enhancement of the total fusion cross section at near the Coulomb barrier, that was previously reported for the B-8+Ni-58 system, was observed in these direct measurements. The present data are systematically consistent with the results for B-8+Si-28 at higher energies with other weakly-bound systems at near-barrier energies. (C) 2021 The Author(s). Published by Elsevier B.V. (AU)

• FAPESP's process: 16/17612-7 - Dynamics of many-body systems IV
• Grantee: Arnaldo Gammal
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 19/07767-1 - Nuclear reactions with weakly-bound or cluster-structured radioactive and stable nuclei
• Grantee: Leandro Romero Gasques
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 18/04965-4 - Study of structure and nuclear reactions induced by exotic nuclei using active targets
• Grantee: Juan Carlos Zamora Cardona
• Support Opportunities: Scholarships in Brazil - Post-Doctoral