New Measurement of the Direct 3α Decay from the 12C Hoyle State

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SMITH, Robin, KOKALOVA, Tz, WHELDON, C, BISHOP, J. E., FREER, M, CURTIS, N and PARKER, D. J. (2017). New Measurement of the Direct 3α Decay from the 12C Hoyle State. Physical Review Letters, 119, p. 132502. [Article]

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Abstract

Excited states in certain atomic nuclei possess an unusual structure, where the dominant degrees of freedom are those of α clusters rather than individual nucleons. It has been proposed that the diffuse 3α system of the 12C Hoyle state may behave like a Bose-Einstein condensate, where the α clusters maintain their bosonic identities. By measuring the decay of the Hoyle state into three α particles, we obtained an upper limit for the rare direct 3α decay branch of 0.047%. This value is now at a level comparable with theoretical predictions and could be a sensitive probe of the structure of this state.

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Official URL:

https://journals.aps.org/prl/abstract/10.1103/Phys...

Research Institute, Centre or Group - Does NOT include content added after October 2018:

Sheffield Institute of Education

Departments - Does NOT include content added after October 2018:

Faculty of Science, Technology and Arts > Department of Engineering and Mathematics

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p. 132502

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