{sup 12}C formation: A classical quest in new light

Journal Article · Fri Oct 28 00:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3628391· OSTI ID:21612063

Tengblad, O; Alcorta, M; Borge, M J. G.; Madurga, M; Perea, A ^[1]; Cubero, M ^[1]; Fynbo, H O. U.; Riisager, K; Kirsebom, O; Hyldegaard, S ^[2]; Jonson, B; Nyman, G; Nilsson, T ^[3]; Diget, D G; Fulton, B ^[4]

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1. Instituto de Estructura de la Materia, CSIC, ES-28006 Madrid (Spain)
2. Department of Physics and Astronomy, University of Aarhus, DK-8000, Aarhus (Denmark)
3. Fundamental Physics, Chalmers University of Technology, S-41296 Goeteborg (Sweden)
4. Department of Physics, University of York, YO10 5DD Heslington, York (United Kingdom)

In this work we have studied the break-up of {sup 12}C following the reactions {sup 10}B({sup 3}He,p{alpha}{alpha}{alpha}) and {sup 11}B({sup 3}He,d{alpha}{alpha}{alpha}). The study was performed at the 5 MV tandem in Madrid. The break-up gives us information on excited states in {sup 12}C from the famous Hoyle state up to an energy of almost 18 MeV. Using a highly segmented experimental set-up the simultaneous detection of the three alpha particles in coincidence with a proton or deuteron respectively made possible a full kinematic reconstruction of the break-up. On the basis of the energies of the 3 {alpha} particles and their angular correlations it has been possible to determine the spin and parity of states for cases in which the assignment has been doubtful. Some of these levels will also de-excite via electromagnetic emission. The comparison between the energy of proton that populate a state of {sup 12}C and the sum of the energies of the 3{alpha} emitted from the same state makes possible to determine the presence of electromagnetic disintegration ({gamma}) to lower states within {sup 12}C followed by the 3{alpha} break-up.

• OSTI ID: 21612063
• Journal Information: AIP Conference Proceedings, Vol. 1377, Issue 1; Conference: FINUSTAR 3 Conference on frontiers in nuclear structure, astrophysics, and reactions, Rhodes (Greece), 23-27 Aug 2010; Other Information: DOI: 10.1063/1.3628391; (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
ALPHA PARTICLES
ANGULAR CORRELATION
BORON 10 TARGET
BORON 11 TARGET
BREAKUP REACTIONS
CARBON 12
COMPARATIVE EVALUATIONS
DEUTERONS
EXCITED STATES
HELIUM 3
HELIUM 3 REACTIONS
MEV RANGE
NUCLEAR STRUCTURE
PARITY
PROTONS
SPIN
ANGULAR MOMENTUM
BARYONS
CARBON ISOTOPES
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CORRELATIONS
DECAY
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
EVALUATION
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
HADRONS
HELIUM ISOTOPES
IONIZING RADIATIONS
ISOTOPES
LIGHT NUCLEI
NUCLEAR DECAY
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PARTICLE PROPERTIES
RADIATIONS
STABLE ISOTOPES
TARGETS