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Physics of Particles and Nuclei

, Volume 49, Issue 4, pp 530–539 | Cite as

Search for the Hoyle State in Dissociation of Relativistic 12C Nuclei

  • D. A. Artemenkov
  • A. A. Zaitsev
  • P. I. Zarubin
Article
  • 35 Downloads

Abstract

Production of ensembles of alpha particle triples associated with the Hoyle state (the second excited state \({\text{0}}_{2}^{ + }\) of the 12C nucleus) in peripheral dissociation of relativistic 12C nuclei is studied. Stacks of nuclear track emulsion pellicles exposed to 12C with an energy from hundreds MeV to a few GeV per nucleon serve as the material for studies. The Hoyle state decays are reconstructed via measurement of emission angles of α particles with the precision sufficient for identification of the unstable 8Be nucleus. The role of alpha particle bonds corresponding to 8Be in the Hoyle state is determined.

Notes

ACKNOWLEDGMENTS

We would like to thank the members of the emulsion group at LHEP JINR V. Bradnova, V. Vartik, I.G. Zarubina, N.V. Kondrat’eva, L.I. Kulikova, and V.V. Rusakova for their active participation in the development and analysis of the irradiated nuclear emulsion. The IHEP (Protvino) researchers G.I. Britvich and V.A. Pikalov provided irradiation of the nuclear emulsion samples in the medical 12С nuclear beam. We gratefully remember the elder researcher of LPI (Russian Academy of Sciences) S.P. Kharlamov who supported our studies for many years. The series of investigation of light nuclei of the BECQUEREL project could hardly be possible without the results of his studies of 6Li conducted in the 1990s.

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • D. A. Artemenkov
    • 1
  • A. A. Zaitsev
    • 1
    • 2
  • P. I. Zarubin
    • 1
    • 2
  1. 1.Joint Institute for Nuclear ResearchDubnaRussia
  2. 2.Lebedev Physical Institute, Russian Academy of SciencesMoscowRussia

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