Decay properties of high-lying single-particles modes

D. BEAUMEL; S. FORTIER; S. GALÈS; J. GUILLOT; H. LANGEVIN-JOLIOT; H. LAURENT; J.M. MAISON; J. VERNOTTE; J. BORDEWIJK; S. BRANDENBURG; A. KRAZNAHORKAY; G.M. CRAWLEY; C.P. MASSOLO; M. RENTERÍA; A. KHENDRICHE

NUCLEAR PHYSICS A

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 1996 vol. 599 p. 265 - 270

0375-9474

The neutron decay of high-lying single-particle states in 64Ni, 90Zr, 120Sn and 208Pb excited by means of the (α,3He) reaction has been investigated at 120 MeV incident energy using the multidetector EDEN. The characteristics of this reaction are studied using inclusive spectra and angular correlation analysis. The structure located between 11 and 15 MeV in 91Zr, and between 8 and 12 MeV excitation energy in 209Pb display large departures from a pure statistical decay. The corresponding non-statistical branching ratios are compared with the results of two theoretical calculations.