Extraction of cluster spectroscopic factors from anomalous large-angle scattering of {sup 3}He and {alpha}-particles

Journal Article · Mon Dec 21 00:00:00 EST 1998 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.57355· OSTI ID:21207833

Burtebaev, N; Duisebaev, B A; Duisebaev, A; Ivanov, G N ^[1]; Sakuta, S B ^[2]

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1. National Nuclear Center of Kazakhstan, Almaty 480082 (Kazakhstan)
2. Russian Research Center 'Kurchatov Institute', Moscow 123182 (Russian Federation)

Anomalous large-angle scattering of {sup 3}He and {alpha}-particles on strongly clusterized nuclei such as {sup 6}Li and {sup 7}Li is in the main determined by the clusters exchange mechanism. This gives an opportunity to use the anomalous scattering for investigation of the cluster structure of nuclei in addition to more traditional methods such as transfer reactions (for example, ({sup 6}Li,d), ({sup 6}Li,{alpha}), ({sup 7}Li,{alpha})) and quasielastic knockout reactions. The present contribution reports on the results of the investigation of the elastic and inelastic scattering of {sup 3}He and {alpha}-particles on the {sup 6}Li and {sup 7}Li nuclei measured at the {sup 3}He energies of 50, 60 and 72 MeV and {alpha}-particles energy of 50.5 MeV in the full angular range. It was shown that experimental angular distributions can be described only if the exchange mechanism of the elastic and inelastic transfer of the deuteron and triton clusters was taken into account. Cluster spectroscopic factors were extracted for the ground and low-lying excited states of the {sup 6}Li and {sup 7}Li nuclei. For the ground states the experimental values of the spectroscopic factors agree well with theoretical predictions and data from the quasielastic knockout reactions. However, for the excited states the experimental values of the d- and t-spectroscopic factors differ from theoretical ones by factor of 2-3.

• OSTI ID: 21207833
• Journal Information: AIP Conference Proceedings, Vol. 455, Issue 1; Conference: ENAM 98: 2. international conference on exotic nuclei and atomic masses, Bellaire, MI (United States), 23-27 Jun 1998; Other Information: DOI: 10.1063/1.57355; (c) 1998 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA PARTICLES
ALPHA REACTIONS
ANGULAR DISTRIBUTION
DWBA
EXCITED STATES
GROUND STATES
HELIUM 3
HELIUM 3 REACTIONS
INELASTIC SCATTERING
KNOCK-OUT REACTIONS
LITHIUM 6
LITHIUM 6 TARGET
LITHIUM 7
LITHIUM 7 TARGET
MEV RANGE
SPECTROSCOPIC FACTORS
TRANSFER REACTIONS
TRITONS