Coulomb excitation of giant resonances in 208Pb by E = 84 MeV/Nucleon 17O projectiles
1988; Elsevier BV; Volume: 209; Issue: 2-3 Linguagem: Inglês
10.1016/0370-2693(88)90929-x
ISSN1873-2445
AutoresJ. Barrette, N. Alamanos, F. Auger, B. Fernández, A. Gillibert, D. J. Horen, J. R. Beene, F. E. Bertrand, R.L. Auble, B. L. Burks, J. Gómez del Campo, M. L. Halbert, R. O. Sayer, W. Mittig, Y. Schütz, Brian J. Haas, J. P. Vivien,
Tópico(s)Atomic and Molecular Physics
ResumoInelastic scattering of 84 MeV/nucleon 17O on 208Pb has been measured between 1.5° ⩽θCM⩽5.0°. The giant resonance structure near 12 MeV is excited with a differential cross section of more than 2b/sr and exhibits a peak-to-continuum ratio as large as 6 to 1. The major part of the cross section can be ascribed to Coulomb excitation of the isovector giant dipole and the giant quadrupole resonance. From the Coulomb excitation of the GQR we deduce a B (E2) fx = 0.53 ±0.11 e2b2 which is that expected for a nearly pure isoscalar resonance which exhausts ≈ 60% of the EWSR.
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