Effective interactions and nuclear structure using 180 MeV protons. II. sup 28 Si( p , p prime )

Journal Article · Fri Jun 01 04:00:00 EDT 1990 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.41.2514· OSTI ID:6939970

Chen, Q; Kelly, J J; Singh, P P; Radhakrishna, M C; Jones, W P; Nann, H ^[1]

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1. Department of Physics, Indiana University, Bloomington, Indiana 47401 (US) Department of Physics, University of Maryland, College Park, Maryland 20742

Differential cross sections and analyzing powers for the scattering of 180 MeV protons have been measured for 14 states of {sup 28}Si for momentum transfers between about 0.4 and 2.1 fm{sup {minus}1}. Medium modifications to the effective interaction for normal-parity isoscalar transitions were studied using transition densities fitted to electroexcitation data to minimize uncertainties due to nuclear structure. An empirical effective interaction, guided by nuclear matter theory, was fitted to inelastic scattering data for five states of {sup 28}Si using self-consistent distorted waves. A good fit to the inelastic scattering data was achieved with an interaction similar to previous results for {sup 16}O. The elastic data, which were not fitted, are also described well. In addition, we tested for mass dependence in the empirical effective interaction by repeating the analysis using data for both {sup 16}O and {sup 28}Si simultaneously. This global analysis produced an interaction intermediate between the two independent results without compromising the fit to either data set. Therefore, the effective interaction in finite nuclei appears to depend strongly upon local density but only weakly upon target.

• OSTI ID: 6939970
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 41:6; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

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A=20-38
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ANALYZING POWER
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
BARYON REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
CYCLIC ACCELERATORS
CYCLOTRONS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELASTIC SCATTERING
ELECTROMAGNETIC RADIATION
ELECTRON REACTIONS
ENERGY RANGE
GAMMA RADIATION
HADRON REACTIONS
INELASTIC SCATTERING
IONIZING RADIATIONS
ISOCHRONOUS CYCLOTRONS
IU CYCLOTRON
LEPTON REACTIONS
MATTER
MEV RANGE
MEV RANGE 100-1000
NUCLEAR MATTER
NUCLEAR REACTIONS
NUCLEON REACTIONS
PARITY
PARTICLE PROPERTIES
PROTON REACTIONS
RADIATIONS
SCATTERING
SILICON 28 TARGET
SPIN
TARGETS