Phenomenological critical interaction distance from elastic scattering measurements on a Pb-208 target

Autor(es)

Guimaraes, V. ^[1] ; Lubian, J. ^[2] ; Kolata, J. J. ^[3] ; Aguilera, E. F. ^[4] ; Assuncao, M. ^[5] ; Morcelle, V. ^[6]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Fis, Rua Matao 137, BR-05508090 Sao Paulo, SP - Brazil

^[2] Univ Fed Fluminense, Inst Fis, Ave Litoranea S-N, BR-24210340 Niteroi, RJ - Brazil

^[3] Univ Notre Dame, Phys Dept, Notre Dame, IN 46556 - USA

^[4] Inst Nacl Invest Nucl, Dept Aceleradores, Apartado Postal 18-1027, Mexico City 11801, DF - Mexico

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

^[6] Univ Fed Rural Rio de Janeiro, BR-23851970 Rio De Janeiro - Brazil

• Tipo de documento: Artigo Científico
• Fonte: EUROPEAN PHYSICAL JOURNAL A; v. 54, n. 12 DEC 19 2018.
• Citações Web of Science: 1

Resumo

.We have surveyed a series of elastic scattering measurements from the literature involving tightly bound (Li-9, Be-10, C-12, O-16, F-19), weakly bound (Li-6, Li-7, Li-8, He-8, Be-9, F-17), and exotic (He-6 and Li-11) nuclei on a Pb-208 target at energies close to the Coulomb barrier. The corresponding data were then converted and analyzed in terms of the interaction distance, where critical-interaction and strong-absorption distances were extracted. Larger values were obtained for the exotic He-6 and Li-11 nuclei, as compared with both weakly bound and tightly bound projectiles. The influence of long-range nuclear interactions and Coulomb dipole polarizability are discussed. A correlation between the critical interaction distance and binding energy for a given configuration is observed. (AU)

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