Unnatural parity transitions in (p,t) reactions using realistic triton wavefunctions

The reaction ²⁰⁸Pb(p,t)²⁰⁶Pb leading to the unnatural parity 3⁺ state of ²⁰⁶Pb is analyzed in the framework of finite range DWBA formalism. The main aspect of the present analysis is the use of a realistic triton wavefunction with S, S′ and D state components which permit this transition in DWBA. Excellent agreement between theoretical prediction and experiment is obtained casting serious doubt on the treatment of this reaction as a sequential transfer process.