The (t,{sup 3}He) reaction at 43 MeV/nucleon on {sup 48}Ca and {sup 58}Ni: Results and microscopic interpretation

Journal Article · Sun Jan 15 00:00:00 EST 2006 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.73.014616· OSTI ID:20771213

Guillot, J; Gales, S; Beaumel, D; Fortier, S; Rich, E; Giai, Nguyen Van; Colo, G; Berg, A.M. van den; Brandenburg, S; Davids, B; Harakeh, M N; Hunyadi, M; Huu, M de; Werf, S.Y. van der; Woertche, H J; Baeumer, C; Frekers, D; Grewe, E -W; Haefner, P; Junk, B C ^[1]

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1. Institut de Physique Nucleaire, IN2P3-CNRS, F-91406 Orsay (France)

We have used the 43 MeV/nucleon primary tritium beam of the AGOR facility with an intensity of 4x10{sup 7} pps and the BBS experimental setup to study the (t,{sup 3}He) reaction between 0 deg. and 5 deg. lab angles on {sup 12}C, {sup 48}Ca, and {sup 58}Ni targets. The standard ray-tracing procedure has allowed us to obtain excitation-energy spectra up to 30 MeV in six angular bins for each residual nucleus, with an average energy resolution of 350 keV. The reaction mechanism has been described in distorted-waves Born approximation (DWBA) using the DWBA98 code. In this approximation, the form factor is treated as a folding of an effective projectile-nucleon interaction with a transition density. The effective projectile-nucleon interaction has been adjusted to reproduce the 0 deg. cross section of the 1{sup +} ground state of {sup 12}B populated in the {sup 12}C(t,{sup 3}He) reaction. We have employed random-phase approximation (RPA) wave functions of excited states to construct the form factor instead of the normal modes wave functions used earlier. This new DWBA+RPA analysis is used to compare calculated and experimental cross sections directly and to discuss the giant resonance excitations in {sup 48}K and {sup 58}Co nuclei.

• OSTI ID: 20771213
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 73, Issue 1; Other Information: DOI: 10.1103/PhysRevC.73.014616; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BORON 12
CALCIUM 48 TARGET
CARBON 12 TARGET
COBALT 58
COMPARATIVE EVALUATIONS
CROSS SECTIONS
DWBA
ENERGY RESOLUTION
ENERGY SPECTRA
EXCITATION
EXCITED STATES
FORM FACTORS
GIANT RESONANCE
GROUND STATES
HELIUM 3
KEV RANGE
MEV RANGE
NICKEL 58 TARGET
NUCLEAR REACTION KINETICS
POTASSIUM 48
RANDOM PHASE APPROXIMATION
TRITON REACTIONS
WAVE FUNCTIONS