Excitation of giant resonances in /sup 208/Pb and /sup 197/Au via proton inelastic scattering

Journal Article · Tue Jun 01 04:00:00 EDT 1976 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.13.2241· OSTI ID:7352365

Bertrand, F E; Kocher, D C

The giant resonance regions in /sup 208/Pb and /sup 197/Au have been investigated by inelastic scattering of 61-MeV protons with an energy resolution of about 100 keV. Cross sections for the giant quadrupole resonance at E/subx/approx. =63A/sup -1///sup 3/ MeV exhaust 90 +- 15% of the energy-weighted sum-rule strength for an isoscalar E2 excitation in both nuclei. The angular distribution for the giant quadrupole plus giant dipole resonance in /sup 208/Pb is compared with microscopic-model distorted wave Born approximation calculations. A pronounced fine-structure resonance is observed in /sup 208/Pb at E/subx/approx. =56A/sup -1///sup 3/ MeV (9.4 MeV). The angular distribution for this resonance is well described by distorted wave Born approximation calculations for an E2 or E3 excitation, but not for an E0 excitation. No prominent fine-structure resonances are observed in /sup 197/Au. The spectra in the bound-state region for /sup 197/Au show a pronounced structure centered at E/subx/approx. =4 MeV, for which the angular distribution is best described by distorted wave Born approximation calculations for E3 or E4 excitations. (AIP)

• Research Organization: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
• OSTI ID: 7352365
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 13:6; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651925* -- Nuclear Properties & Reactions
A=190-219
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BARYON REACTIONS
BORN APPROXIMATION
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DISTRIBUTION
DWBA
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
GIANT RESONANCE
GOLD 197
GOLD 197 TARGET
GOLD ISOTOPES
HADRON REACTIONS
HEAVY NUCLEI
INELASTIC SCATTERING
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LEAD 208
LEAD 208 TARGET
LEAD ISOTOPES
MEV RANGE
MEV RANGE 10-100
NUCLEAR QUADRUPOLE RESONANCE
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-EVEN NUCLEI
PROTON REACTIONS
RADIOISOTOPES
RESONANCE
SCATTERING
SECONDS LIVING RADIOISOTOPES
STABLE ISOTOPES
TARGETS