Photon interactions below 9 MeV in Ba and Ce

Journal Article · Mon Sep 01 00:00:00 EDT 1986 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.34.1114· OSTI ID:5082444

Laszewski, R M

Elastic scattering of monoenergetic tagged photons from natural barium and cerium targets was measured at 135/sup 0/ for excitations between 4.5 and 9.0 MeV. The data were used to infer the respective total absorption cross sections below neutron emission threshold, and the results are compared with (..gamma..,n) measurements and with the predictions of a quasiparticle-phonon calculation in /sup 140/Ce. The low energy dipole absorption is found to be generally consistent with an extrapolation of the tail of the E-italic1 giant resonance, and to be substantially underestimated by the quasiparticle-phonon theory.

• Research Organization: Nuclear Physics Laboratory and Department of Physics, University of Illinois at Urbana-Champaign, Champaign, Illinois 61820
• OSTI ID: 5082444
• Journal Information: Phys. Rev. C; (United States), Vol. 34:3
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARIUM
PHOTONUCLEAR REACTIONS
CERIUM
ELASTIC SCATTERING
ANGULAR DISTRIBUTION
E1-TRANSITIONS
FLUORESCENCE
GIANT RESONANCE
MEV RANGE 01-10
NEUTRON EMISSION
PHONONS
PHOTONEUTRONS
QUASI PARTICLES
TOTAL CROSS SECTIONS
ALKALINE EARTH METALS
BARYONS
CROSS SECTIONS
DISTRIBUTION
ELEMENTARY PARTICLES
ELEMENTS
EMISSION
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
FERMIONS
HADRONS
LUMINESCENCE
METALS
MEV RANGE
MULTIPOLE TRANSITIONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEONS
PHOTONUCLEONS
RARE EARTHS
RESONANCE
SCATTERING
651725* - Nuclear Properties & Reactions
A=90-149
Experimental- Nuclear Reactions & Scattering- (-1987)