B(E2;0g.s.+→21+) in 18Ne and isospin purity in A=18 nuclei -: art. no. 034306

The 0(g.s.)(+)-->2(1)(+) excitation in the proton-rich nucleus Ne-18 has been studied via intermediate energy heavy-ion scattering with a beam of this radioactive isotope. The observed gamma-ray yields have been combined with coupled channels calculations of the inelastic scattering reactions to obtain the electromagnetic matrix element B(E2;0(g.s.)(+)-->2(1)(+)). This result is combined with the corresponding results in the mirror nucleus O-18 and the T=1 states in the N=Z nucleus F-18 as a test of isospin purity.