Momentum distributions from three-body decaying 9Be and 9B resonances

Abstract

The complex-rotated hyperspherical adiabatic method is used to study the decay of low-lying ${}^9$Be and ${}^9$B resonances into $\alpha$, $\alpha$ and $n$ or $p$. We consider six low-lying resonances of ${}^9$Be ($1/2^{\pm }$, $3/2^{\pm }$ and $5/2^{\pm }$) and one resonance of ${}^9$B ($5/2^{-}$) to compare with. The properties of the resonances at large distances are decisive for the momentum distributions of the three decaying fragments. Systematic detailed energy correlations of Dalitz plots are presented.

4 pages, 2 figures. Proceedings of the SOTANCP2 conference held in Brussels in May 2010

References in corpus (2)

• Distinction between sequential and direct three-body decays
• Resonance parameters of the first 1/2+ state in 9Be and astrophysical implications