Theoretical approaches to the 3α break-up of 12C

Robin Smith, Jack Bishop, Carl Wheldon, Tzany Kokalova

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)
156 Downloads (Pure)


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.

Original languageEnglish
Article number012021
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 24 Sept 2019
Event42nd Symposium on Nuclear Physics 2019, SNP 2019 - Cocoyoc, Morelos, Mexico
Duration: 7 Jan 201910 Jan 2019

ASJC Scopus subject areas

  • General Physics and Astronomy


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