Scattering of the halo nucleus Be-11 from a lead target at 3.5 times the Coulomb barrier energy

Autor(es):Mostrar menos -

Duan, F. F. ^{[1, 2]} ; Yang, Y. Y. ^{[1, 3]} ; Wang, K. ^[1] ; Moro, A. M. ^{[4, 5]} ; Guimaraes, V ^[6] ; Pang, D. Y. ^[7] ; Wang, J. S. ^{[1, 3, 8]} ; Sun, Z. Y. ^{[1, 3]} ; Lei, Jin ^{[9, 1]} ; Di Pietro, A. ^[10] ; Liu, X. ^[11] ; Yang, G. ^{[1, 3]} ; Ma, J. B. ^{[1, 3]} ; Ma, P. ^[1] ; Xu, S. W. ^[1] ; Bai, Z. ^[1] ; Sun, X. X. ^[2] ; Hu, Q. ^[1] ; Lou, J. L. ^[12] ; Xu, X. X. ^{[1, 3]} ; Li, H. X. ^[1] ; Jin, S. Y. ^[1] ; Ong, H. J. ^[1] ; Liu, Q. ^[13] ; Yao, J. S. ^[8] ; Qi, H. K. ^[8] ; Lin, C. J. ^[14] ; Jia, H. M. ^[14] ; Ma, N. R. ^[14] ; Sun, L. J. ^{[15, 14]} ; Wang, D. X. ^[14] ; Zhang, Y. H. ^{[1, 3]} ; Zhou, X. H. ^{[1, 3]} ; Hu, Z. G. ^{[1, 3]} ; Xu, H. S. ^{[1, 3]} ; Collaboration, RIBLL

Afiliação do(s) autor(es):Mostrar menos -

^[1] Chinese Acad Sci, Inst Modern Phys, CAS Key Lab High Precis Nucl Spect, Lanzhou 730000 - Peoples R China

^[2] Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000 - Peoples R China

^[3] Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100080 - Peoples R China

^[4] Univ Seville, Dept FAMN, Apartado 1065, Seville 41080 - Spain

^[5] Inst Interuniv Carlos I Fis Teor & Computat iC1, Apdo 1065, E-41080 Seville - Spain

^[6] Univ Sao Paulo, Inst Fis, Rua Matao 1371, BR-05508090 Sao Paulo, SP - Brazil

^[7] Beihang Univ, Beijing Key Lab Adv Nucl Mat & Phys, Sch Phys, Beijing 100191 - Peoples R China

^[8] Huzhou Univ, Sch Sci, Huzhou 313000 - Peoples R China

^[9] Ist Nazl Fis Nucl, Sez Pisa, Largo Pontecorvo 3, I-56127 Pisa - Italy

^[10] Ist Nazl Fis Nucl, Lab Nazl Sud, Via S Sofia 62, I-95123 Catania - Italy

^[11] Sichuan Univ, Inst Nucl Sci & Technol, Minist Educ, Key Lab Radiat Phys & Technol, Chengdu 610064 - Peoples R China

^[12] Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871 - Peoples R China

^[13] Anhui Univ, Sch Phys & Mat Sci, Hefei 230601 - Peoples R China

^[14] China Inst Atom Energy, Dept Nucl Phys, Beijing 102413 - Peoples R China

^[15] Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai 200240 - Peoples R China

• Tipo de documento: Artigo Científico
• Fonte: Physics Letters B; v. 811, DEC 10 2020.
• Citações Web of Science: 5

Resumo

Angular distributions of quasielastic scattering and breakup of the neutron-rich halo nucleus Be-11 on a Pb-208 target at an incident energy of 140 MeV (about 3.5 times the Coulomb barrier) were measured at HIRFL-RIBLL. A strong suppression of the Coulomb nuclear interference peak is observed in the measured quasielastic scattering angular distribution. The result demonstrates for the first time the persistence of the strong breakup coupling effect reported so far for reaction systems involving neutron-halo nuclei at this relatively high incident energy. The measured quasielastic scattering cross sections are satisfactorily reproduced by continuum discretized coupled channel (CDCC) calculations as well as by the XCDCC calculations where the deformation of the Be-10 core is taken into account. The angular and energy distributions of the Be-10 fragments could also be well reproduced considering elastic breakup (CDCC and XCDCC) plus nonelastic breakup contributions, with the latter evaluated with the model by Ichimura, Austern and Vincent {[}1]. The comparison of the Be-10 energy distributions with simple kinematical estimates evidence the presence of a significant post-acceleration effect which, in the (X)CDCC frameworks, is accounted for by continuum-continuum couplings. (C) 2020 The Author. Published by Elsevier B.V. (AU)

• Processo FAPESP: 16/17612-7 - Dinâmica de sistemas de muitos corpos IV
• Beneficiário: Arnaldo Gammal
• Modalidade de apoio: Auxílio à Pesquisa - Temático