Heavy-ion excitation and photon decay of giant resonances in /sup 208/Pb
Creators
- 1. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
Description
We have determined the ground-state photon decay probability and the branching ratios to a number of low-lying states as a function of excitation energy in /sup 208/Pb up to /similar to/15 MeV. Results for the giant quadrupole resonance at 10.6 MeV include determination of a ground-state electromagnetic transition strength B(E2)up-arrow = 5800 +- 1600 e2fm4 and observation of strong suppression of the E1 transition from the resonance to the 3- state at 2.6 MeV. These results confirm the common assumption of the predominately isoscalar character of the 10.6-MeV resonance. Ground-state gamma coincidences enable us to isolate the isovector giant dipole resonance, which is too weak to be seen in singles, and to test models for its excitation in heavy-ion scattering
Additional details
Publishing Information
- Journal Title
- Physical Review, C
- Journal Volume
- 39
- Journal Issue
- 4
- Series
- Phys. Rev., C.
- Journal Page Range
- 1307-1319
- ISSN
- 0556-2813
- CODEN
- PRVCA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 20047988
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- BRANCHING RATIO; COINCIDENCE SPECTROMETRY; COLLECTIVE MODEL; ENERGY LEVELS; EXPERIMENTAL DATA; E1-TRANSITIONS; E2-TRANSITIONS; GAMMA RADIATION; GIANT RESONANCE; INELASTIC SCATTERING; ISOSPIN; LEAD 208; LEAD 208 TARGET; MEV RANGE 100-1000; OXYGEN 17 REACTIONS; PARITY; PROBABILITY; SPIN; SUM RULES
- Descriptors DEC
- ANGULAR MOMENTUM; COINCIDENCE METHODS; COUNTING TECHNIQUES; DATA; ELECTROMAGNETIC RADIATION; ENERGY RANGE; ENERGY-LEVEL TRANSITIONS; EQUATIONS; EVEN-EVEN NUCLEI; HEAVY ION REACTIONS; HEAVY NUCLEI; INFORMATION; IONIZING RADIATIONS; ISOTOPES; LEAD ISOTOPES; MATHEMATICAL MODELS; MEV RANGE; MULTIPOLE TRANSITIONS; NUCLEAR MODELS; NUCLEAR REACTIONS; NUCLEI; NUMERICAL DATA; PARTICLE PROPERTIES; RADIATIONS; RESONANCE; SCATTERING; STABLE ISOTOPES; TARGETS