Interaction of photons with /sup 208/Pb and neighboring isotopes at energies below the neutron emission threshold

Journal Article · Thu Feb 01 04:00:00 EST 1979 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.19.342· OSTI ID:6463187

Laszewski, R; Axel, P

Average elastic photon scattering cross sections were measured for /sup 209/Bi, /sup 208/Pb, /sup 207/Pb, /sup 206/Pb, Tl and Hg at excitation energies between 4.5 MeV and the neutron emission threshold, with an energy resolution in the range between 50 and 150 keV. This resolution was sufficient to determine the strengths of most of the strong levels in this energy region for /sup 208/Pb; there are concentrations of strength in a few levels near 5.5 and 7 MeV with the sum of B(E1) up-arrow values equal to about 0.84 and 0.65 e/sup 2/ fm/sup 2/, respectively; each of these two groups of levels corresponds to only about 0.63% of the electric dipole sum rule. In the neighboring isotopes, approximately the same amount of strength is distributed among many more energy levels; although this strength is spread in energy more than it is in /sup 208/Pb, it remains relatively localized.

• Research Organization: Department of Physics, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
• OSTI ID: 6463187
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 19:2; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

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A=220 & above
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
BISMUTH 209 TARGET
CROSS SECTIONS
DATA
DATA FORMS
ELASTIC SCATTERING
ELEMENTS
EMISSION
ENERGY
ENERGY LEVELS
ENERGY RANGE
EQUATIONS
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
GRAPHS
HEAVY NUCLEI
INFORMATION
ISOLATED VALUES
ISOTOPES
LEAD 206 TARGET
LEAD 207 TARGET
LEAD 208
LEAD 208 TARGET
LEAD ISOTOPES
MERCURY
METALS
MEV RANGE
MEV RANGE 01-10
NEUTRON EMISSION
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
PARITY
PARTICLE PROPERTIES
PHOTONUCLEAR REACTIONS
SCATTERING
SPIN
STABLE ISOTOPES
SUM RULES
TARGETS
THALLIUM
THRESHOLD ENERGY