Inelastic proton scattering at 30--40 MeV from /sup 12/C

Journal Article · Sat Oct 01 04:00:00 EDT 1983 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.28.1443· OSTI ID:5594471

De Leo, R; D'Erasmo, G; Pantaleo, A; Harakeh, M N; Cereda, E; Micheletti, S; Pignanelli, M

Elastic and inelastic proton differential cross sections for excitation of the following levels of /sup 12/C: 2/sub 1//sup +/(4.43 MeV), 4/sub 1//sup +/(14.08 MeV), 0/sub 2//sup +/(7.65 MeV), and 3/sub 1//sup -/(9.64 MeV) have been measured at three incident energies between 30 and 40 MeV. The data have been described by coupled channel calculations and form factors obtained by coupling surface vibrations to static deformations. The reproduction of the 0/sub 2//sup +/ state data, if this state is assumed to be a ..beta..-vibrational state, requires a quadrupole ..beta..-vibrational amplitude which is 57% of the static quadrupole deformation and a mixing of the breathing mode of the nucleus with an amplitude that would correspond to about 1% of the E0 energy weighted sum rule. For the 3/sub 1//sup -/ state it is found that the performed calculations are sensitive to the K projection, with the angular distribution of the 3/sub 1//sup -/ state being better fitted assuming K/sup ..pi../ = 3/sup -/ band. Coupled channel calculations using microscopic form factors obtained from wave functions generated using the resonating group method have also been performed and are compared to the experimental data.

• Research Organization: Dipartimento di Fisica dell'Universita di Bari, Bari, Italy and Istituto Nazionale di Fisica Nucleare, Sezione di Bari, Bari, Italy
• OSTI ID: 5594471
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 28:4; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BARYON REACTIONS
CARBON 12
CARBON 12 TARGET
CARBON ISOTOPES
CHARGED-PARTICLE REACTIONS
CLUSTER MODEL
COUPLED CHANNEL THEORY
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELASTIC SCATTERING
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
EXCITED STATES
EXPERIMENTAL DATA
FORM FACTORS
FUNCTIONS
HADRON REACTIONS
INELASTIC SCATTERING
INFORMATION
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUMERICAL DATA
PARITY
PARTICLE PROPERTIES
PROTON REACTIONS
RESONATING-GROUP METHOD
SCATTERING
SPIN
STABLE ISOTOPES
TARGETS
VARIATIONAL METHODS
VIBRATIONAL STATES
WAVE FUNCTIONS