1–6 Sept 2019
University of Surrey
Europe/London timezone

Time-dependent exploration of 3-alpha states in $^{12}$C

5 Sept 2019, 19:10
20m
University of Surrey

University of Surrey

Poster Posters Poster Session

Speaker

Paul Stevenson (University of Surrey)

Description

We use nuclear time-dependent Hartree-Fock (TDHF) to simulate the reaction of three alpha particles at low energy by first fusing two alpha to from $^8$Be* followed by a third alpha impinging during the lifetime of the beryllium resonance. Depending on the energies and impact parameters of the reacting nuclei different outcomes are obtained with some fusion events showing short-lived alpha chain or bent-arm configurations which oscillate with characteristic frequencies in the range 6-15 MeV.

The method assumes a Skyrme-type effective interaction, and intial alpha particles made of antisymmetrised nucleons which are free to develop as single particles. The alpha structures seem to survive during the resonant capture process, following which a more compact final state is reached.

We discuss various typical trajectories showing the range of resonance behaviours observed depending on initial conditions, and comment on perspective for further work, such as a requantisation of the dynamics.

Primary author

Paul Stevenson (University of Surrey)

Co-author

Mr Jamie Willerton (University of Surrey)

Presentation materials