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

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

*Corresponding author for this work

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


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.

Original languageEnglish
Title of host publicationNUCLEI AT THE LIMITS
Number of pages6
Publication statusPublished - 5 Apr 2005
EventNuclei at the Limits - Argonne, IL, United States
Duration: 26 Jul 200430 Jul 2004

Publication series

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


ConferenceNuclei at the Limits
Country/TerritoryUnited States
CityArgonne, IL

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