Coulomb excitation of the giant dipole resonance in light-ion inelastic scattering from /sup 208/Pb

Journal Article · Sun Nov 01 04:00:00 EST 1981 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.24.2179· OSTI ID:6110582

Izumoto, T; Lui, Y; Youngblood, D H; Udagawa, T; Tamura, T

A coupled-channel calculation including Coulomb excitation has been done for excitation of the isovector giant dipole resonance in light-ion inelastic scattering from /sup 208/Pb at forward angles. It is found that the predicted cross sections for excitation of the giant dipole resonance with alpha inelastic scattering, calculated including Coulomb excitation, are much smaller than the experimental isoscalar giant monopole resonance cross section at incident energies around 100 MeV. The predicted cross section for Coulomb excitation of giant dipole resonance increases rapidly with increasing incident energy, and the giant dipole and monopole resonance cross sections become comparable above E/sub ..cap alpha../ = 300 MeV. For inelastic scattering of /sup 3/He, deuterons, and protons at forward angles, Coulomb excitation of giant dipole resonance is found to be comparable to the giant monopole resonance cross section at 100< or approx. =E/sup lab/< or approx. =200 MeV. Coulomb excitation of the giant dipole resonance is strongly inhibited by momentum mismatch between incident and outgoing waves due to the large negative Q values. This mismatch is reduced for lighter projectile masses and higher incident energies. As the giant monopole and dipole resonances are almost coincident, giant dipole resonance excitation must be properly accounted for in studies of the giant monopole resonance.

• Research Organization: Cyclotron Institute, Texas AandM University, College Station, Texas 77843
• OSTI ID: 6110582
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 24:5; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA REACTIONS
ANGULAR DISTRIBUTION
BORN APPROXIMATION
CHARGED-PARTICLE REACTIONS
COULOMB EXCITATION
COUPLED CHANNEL THEORY
CROSS SECTIONS
DIPOLE MOMENTS
DISTRIBUTION
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXCITATION
GIANT RESONANCE
HEAVY NUCLEI
INELASTIC SCATTERING
ISOTOPES
LEAD 208
LEAD 208 TARGET
LEAD ISOTOPES
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
NUCLEI
RESONANCE
SCATTERING
STABLE ISOTOPES
TARGETS