EPJ Web of Conferences (Mar 2014)

Search for rotational state of Hoyle state in complete kinematic experiment 12C(α, α′) 3α

  • Rana T. K.,
  • Bhattacharya C.,
  • Bhattacharya S.,
  • Kundu S.,
  • Banerjee K.,
  • Ghosh T. K.,
  • Mukherjee G.,
  • Pandey R.,
  • Gohil M.,
  • Dey A.,
  • Meena J. K.,
  • Prajapati G.,
  • Roy P.,
  • Pai H.,
  • Biswas M.

DOI
https://doi.org/10.1051/epjconf/20146603010
Journal volume & issue
Vol. 66
p. 03010

Abstract

Read online

An excited state of 12C having excitation energy (Ex) 9.65 ± 0.02 MeV and width (FWHM) 607 ± 55 keV, which decays to three α particles via Hoyle state (Ex = 7.65 MeV), has been directly identified in the exclusive inelastic scattering of 60 MeV 4He on 12C, measured in coincidence with the recoiling 12C Hoyle state (decaying mostly as 12C* → 8Begs → α → α + α + α) by event-by-event kinematic reconstruction of the completely detected (4α) events. This state is likely to be a candidate for 22+ first excited of Hoyle state.