Interference effects between resonant and direct reaction mechanisms for Li-9(d,alpha)He-4

Authors
Ruprecht, G Bemmerer, D Czerski, K Heide, P Hoeft, M
Citation
G. Ruprecht et al., Interference effects between resonant and direct reaction mechanisms for Li-9(d,alpha)He-4, NUCL PHYS A, 688(1-2), 2001, pp. 521C-523C
Citations number
9
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS A
ISSN journal
03759474 → ACNP
Volume
688
Issue
1-2
Year of publication
2001
Pages
521C - 523C
Database
ISI
SICI code
0375-9474(20010521)688:1-2<521C:IEBRAD>2.0.ZU;2-S
Abstract
Evidence for an unexpected anisotropy in the angular distributions for the Li-6(d,alpha)He-4 reaction has been observed for deuteron energies below 15 0 keV. This is explained by an interference between a subthreshold resonanc e in Be-8 and the direct reaction contribution. By means of a coherent supe rposition of both the reaction amplitudes (R-matrix and DWBA) the angular d istributions could be reproduced up to 2 MeV. From the reaction model param eters obtained excitation curves down to astrophysically relevant energies could be calculated.