Nonresonant breakup effects in {sup 6}L{rvec i}+{sup 58}Ni elastic scattering at 70.5 MeV

Journal Article · Wed Nov 01 04:00:00 EST 1995 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.52.2614· OSTI ID:122394

Rusek, K ^[1]; Clarke, N M; Tungate, G; Ward, R P ^[2]

---

1. Soltan Institute for Nuclear Studies, Zaklad 1, Hoza 69, 00 681 Warsaw (Poland)
2. School of Physics and Space Research, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom)

Recently published data for the elastic scattering of 70.5 MeV polarized {sup 6}Li by {sup 58}Ni have been compared with the results of coupled-channels calculations. The diagonal and off-diagonal potentials used in the analysis were generated from phenomenological {alpha} + {sup 58}Ni and {ital {rvec d}} + {sup 58}Ni optical potentials via the cluster-folding method. Examined were the effects of projectile excitation to the three low-lying {ital T}=0 resonant states and to nonresonant continuum states in the energy range 0.63 MeV--10.03 MeV, relative to the {sup 6}Li{r_arrow}{alpha}+{ital d} breakup threshold at 1.47 MeV. In common with earlier analyses, calculations limited to the resonant excited states reproduced the data only when the interaction and coupling potentials were renormalized. However, the inclusion of the nonresonant excited states removed the need for this renormalization. Calculations including both the resonant and nonresonant states yielded a description of the differential cross section data superior to that resulting from calculations limited to the resonant states even when the latter were performed with renormalized potentials. Calculations of the tensor analyzing powers reproduced the data well and favored a near zero value for the spectroscopic amplitude of the {ital D}-state admixture in the {sup 6}Li ground state cluster wave function.

• OSTI ID: 122394
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 5 Vol. 52; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ALPHA REACTIONS
BREAKUP REACTIONS
COUPLED CHANNEL THEORY
DEUTERON REACTIONS
ELASTIC SCATTERING
EXCITATION
EXCITED STATES
FOLDING MODEL
LITHIUM 6 REACTIONS
MEV RANGE 10-100
NICKEL 58 TARGET
POLARIZED BEAMS
RENORMALIZATION