Physics of Atomic Nuclei

, Volume 81, Issue 9, pp 1237–1243 | Cite as

Application of Nuclear Track Emulsion in Search for the Hoyle State in Dissociation of Relativistic 12C Nuclei

  • A. A. Zaitsev
  • P. I. ZarubinEmail author
Technology of Nuclear Materials


In dissociation in nuclear track emulsion of 4.5 and 1 A GeV/c12C nuclei, the formation of triplets of α particles in the Hoyle state (the second excited state 0+) is observed. This state is identified by the invariant mass, calculated from pair angles in the α triples in approximation of conservation of momentum per nucleon of the parent nucleus. An estimate of the contribution of the Hoyle state to the dissociation of 12C→ 3α is 10–15%.


nuclear emulsion dissociation invariant mass relativistic fragments 12C nucleus Hoyle’s state alpha particles 


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© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  1. 1.Veksler and Baldin Laboratory of High Energy PhysicsJoint Institute for Nuclear ResearchDubna, Moscow oblastRussia
  2. 2.Lebedev Physical InstituteRussian Academy of SciencesMoscowRussia

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