Spin determination via α-d angular correlations and α-transfer DWBA analysis in 18 F high-energy states

1983
27 pages
Published in:
  • Nucl.Phys.A 402 (1983) 87-113
  • Published: 1983

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Abstract: (Elsevier)
Particle-particle angular correlations for reactions in non-zero degree geometry and with non-zero spin nuclei were investigated and found to be a valuable tool for spin determination, d-α angular correlations for 14 N( 6 Li, d) 18 F ∗ → (α) 14 N were measured for three strongly excited states in 18 F (9.58 MeV, 11.2 MeV and 14.1 MeV), at 36 MeV of bombarding energy. Spins and parities for two of the observed states were determined, and, in agreement with theoretical predictions, these states are suggested as members of the K π = 1 + α-rotational band. The three analyzed states are found to undergo a predominant α-particle decay to the ground state of 14 N. Angular distributions for all the observed states are measured and analyzed under Hauser-Feshbach and exact-finite-range DWBA formalisms with Gamow unbound wave functions. Spectroscopic factors are extracted and compared to the shell-model predictions showing a reasonable agreement.
  • Nuclear reactions