C14(Li

Abstract

Energy spectra and angular distributions of tritons from the ' C( Li, t)' 0 reaction have been measured at 34 MeV Li incident energy and between Oi,b --5' and 45'. The observed selectivity and the forward peaked angular distributions suggest a predominantly direct reaction mechanism. ' 0 states with main 3p-2h configuration are tentatively identified. The experimental data have been analyzed in terms of Hauser-Feshbach and exactfinite-range distorted-wave Born-approximation theories. He spectroscopic strengths are extracted.NUCLEAR REACTIONS ' C( Li,t) O. E( Li) = 34 MeV; measured o'(8); 0 levels He spectroscopic strengths extracted. EFR--DWBA and HF analysis.

Peripheral elastic and inelastic scattering ofO17,18on light targets at 12 MeV/nucleon

“…The cross section has no forward maximum and decays almost exponentially at large angles with small amplitude wiggles. The experimental study by Cunsolo et al [31] using three particle transfer reaction showed that the low-lying negative parity state in 17 12 C. Optical potentials in both incoming and outgoing channels were extracted from a standard analysis using WoodsSaxon formfactors. Analysis in terms of semimicroscopic double folding formfactors, using six different approximations for the NN effective interactions helped us to eliminate the ambiguities found with WS potentials.…”

“…The cross section has no forward maximum and decays almost exponentially at large angles with small amplitude wiggles. The experimental study by Cunsolo et al [31] using three particle transfer reaction showed that the low-lying negative parity state in 17 O, J π = 5 2 − , Ex = 3.843 MeV is a member of 16 O K + αrotational band coupled to p 1/2 neutron, and thus has a pure 4p−3h configuration. The state J π = 1 2 + , E x = 6.36 MeV, located only 3 keV bellow the α threshold in 17 O is weakly populated in the reaction 13 C( 6 Li,d) 17 O [32].…”

A = 3 Clustering in Nuclei

“…Cunsolo et al [9] used the reaction 14 C( 6 Li, t) 17 O at E( 6 Li) = 34M eV . The observed selectivity and the forward peaked angular distribution suggested a predominantly direct reaction mechanism.…”

Transfer Reactions As a Tool in Nuclear Astrophysics

“…The link between these two views is not straightforward but there have been recent efforts to perform FR-DWBA calculations of the 12 C( 7 Li,t) 16 O reaction with the (N, L) parameters for the various components of the α+ 12 C wave functions obtained from shell model calculations [100]. In case of 17 O while lower states are well described by a single neutron above a close 16 O core, high energy states have been theoretically predicted [101], and observed for some of them [102], to be dominated by a mixture of 2p-1h/4p-3h and 3p-2h/5p-4h configurations 7 for negative-and positiveparity 17 O states, respectively. In the following discussion we make use of the number of quanta Q 2N + L for the relative α+ 13 C motion.…”