Properties of the 12C 10 MeV state determined through β-decay

Summary, in English

The β-delayed triple-α particle decay of ¹²B has been measured with a setup that favours coincidence detection. A broad state in ¹²C, previously reported around 10 MeV, has been seen and its properties determined through R-matrix analysis of the excitation spectrum. The spin and parity are 0⁺. Interference between this state and the Hoyle state at 7.654 MeV has a marked influence on the spectrum. The coupling between the two states makes it difficult to determine the resonance energy.

• Author: C. Aa Diget; F. C. Barker; M. J G Borge; J. Cederkäll; V. N. Fedosseev; L. M. Fraile; B. R. Fulton; H. O U Fynbo; H. B. Jeppesen; B. Jonson; U. Köster; M. Meister; T. Nilsson; G. Nyman; Y. Prezado; K. Riisager; S. Rinta-Antila; O. Tengblad; M. Turrion; K. Wilhelmsen; J. Äystö
• Publishing year: 2005-10-03
• Language: English
• Pages: 3-18
• Publication/Series: Nuclear Physics A
• Volume: 760
• Issue: 1-2
• Links: http://dx.doi.org/10.1016/j.nuclphysa.2005.05.159
• Document type: Journal article
• Publisher: Elsevier
• Keywords: Radioactivity
• Status: Published
• ISBN/ISSN/Other: ISSN: 0375-9474