Breakup and the
Spectroscopy of Continuum States

Which Continuum?

‘Overlap’ Challenges

What a good theory needs:

CDCC: Coupled Discretised Continuum Channels

Slide 6

Slide 7

Testing CDCC Convergence

Adiabatic CDCC:
compare with Exact 3-body model

¹⁵C + 9Be breakup at 54 MeV/u

¹¹Be + ¹²C breakup at 67 MeV/u

CDCC: sub-Coulomb ⁸B+⁵⁸Ni (26 MeV)

Coulomb+Nuclear Multistep

Convergence: max bin E_rel

Slide 15

Slide 16

E1 & E2 breakup of ⁸B

⁸B + ²⁰⁸Pb ® ⁷Be parallel momentum distributions

Extensions started

Wave functions of ⁶He

1 Neutron stripping from  three-body Borromean Nuclei

1N stripping from ⁶He g.s.

1N stripping from ¹⁴Be g.s.

Elastic Breakup of 2N halo

Continuum Spatial Correlations

‘True’ 3-body resonances?

Continuum Energy Correlations

Continuum three-body wave functions

Virtual states & Resonances

⁶He excitations & resonances

Four-body dynamics

T-matrix expansions for breakup

s(q) for ¹¹Li(p,p’) at 68 MeV/u

Conclusions