By the same authors

Doorway states as principal decay pathway in 12C( 12C,γ) radiative capture

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Published copy (DOI)


  • D. G. Jenkins
  • B. R. Fulton
  • J. Pearson
  • C. J. Lister
  • M. P. Carpenter
  • S. J. Freeman
  • N. J. Hammond
  • R. V.F. Janssens
  • T. L. Khoo
  • T. Lauritsen
  • A. H. Wuosmaa
  • P. Fallon
  • A. Görgen
  • A. O. MacChiavelli
  • M. McMahan
  • F. Haas


Publication details

Title of host publicationNUCLEI AT THE LIMITS
DatePublished - 5 Apr 2005
Number of pages6
Original languageEnglish

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


The heavy-ion radiative capture reaction, 12C( 12C,γ), has been investigated at beam energies around 16 MeV. Three different experiments were performed. Capture cross-sections were obtained by measuring fused 24Mg residues using the FMA at ANL. These were found to significantly exceed values reported earlier. Subsequently, the decay pathways associated with radiative capture were studied in two separate measurements: one with the high-resolution Gammasphere array and a second with a high efficiency BGO array, where gamma rays were recorded in coincidence with 24Mg residues detected at the focal plane of the DRAGON recoil separator at TRIUMF. Both measurements indicate that a substantial fraction of the decay is mediated through high-lying doorway states, possibly associated with the long-predicted shape-isomeric band in 24Mg.

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