Two recent experiments have indicated that the break-up of the 12C Hoyle state is dominated by the sequential 8Be(g.s.) + α decay channel. The rare direct 3α decay was found to contribute with a branching ratio of less than 0.047% (95% C.L.). However, the ability of experimentalists to successfully disentangle these two competing decay channels relies on accurate theoretical predictions of how they each manifest in phase space distribution of the three break-up α-particles. The following paper reviews the current theoretical approaches to calculating the break-up of the Hoyle state and introduces a semi-classical WKB approach, which adequately reproduces the results of more sophisticated calculations. It is proposed that a more accurate upper limit on this branching ratio may be obtained if these new theoretical results are taken into account when analysing experimental data.
|Journal||Journal of Physics: Conference Series|
|Publication status||Published - 24 Sept 2019|
|Event||42nd Symposium on Nuclear Physics 2019, SNP 2019 - Cocoyoc, Morelos, Mexico|
Duration: 7 Jan 2019 → 10 Jan 2019
ASJC Scopus subject areas
- Physics and Astronomy(all)