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.

arXiv comment4 pages, 2 figures. Proceedings of the SOTANCP2 conference held in Brussels in May 2010

References in corpus (5)

• Computations of Three-Body Continuum Spectra
• Distinction between sequential and direct three-body decays
• Resonance parameters of the first 1/2+ state in 9Be and astrophysical implications
• Above threshold s-wave resonances illustrated by the 1/2${}^{+}$ states in ${}^9$Be and ${}^9$B
• Structure and three-body decay of ${}^9$Be resonances