|Author||Boldeman, J. W. ♦ Allen, B. J. ♦ de L. Musgrove, A. R. ♦ Macklin, R. L.|
|Source||United States Department of Energy Office of Scientific and Technical Information|
|Subject Keyword||NUCLEAR PHYSICS AND RADIATION PHYSICS ♦ NEUTRON REACTIONS ♦ CAPTURE ♦ YTTRIUM 89 TARGET ♦ KEV RANGE 01-10 ♦ KEV RANGE 10-100 ♦ LEVEL WIDTHS ♦ OPTICAL MODELS ♦ P WAVES ♦ RESONANCE ♦ S WAVES ♦ SPIN ♦ VALENCY MODEL ♦ ANGULAR MOMENTUM ♦ BARYON REACTIONS ♦ ENERGY RANGE ♦ HADRON REACTIONS ♦ KEV RANGE ♦ MATHEMATICAL MODELS ♦ NUCLEAR MODELS ♦ NUCLEAR REACTIONS ♦ NUCLEON REACTIONS ♦ PARTIAL WAVES ♦ PARTICLE PROPERTIES ♦ TARGETS ♦ Nuclear Properties & Reactions, A=59-89, Experimental- Nuclear Reactions & Scattering- (-1987)|
|Abstract||The resonance neutron capture cross section of /sup 89/Y has been measured between 2.5 and 100 keV with the neutron capture facility at the 40-m flight station on the Oak Ridge Electron Linear Accelerator. Resonance parameters were extracted for levels below 50-keV bombarding energy. The average s-wave radiative width (GAMMA/sub ..gamma../)/sub s/ = 115 +- 15 MeV. Spin assignments were made for the 13 largest p-wave resonances from shape analysis. The average radiative width for these resonances is (GAMMA/sub ..gamma../)/sub p/ = 307 +- 31 MeV. The strong correlation between p-wave reduced neutron widths and radiative widths rho(GAMMA/sup 1//sub n/,GAMMA/sub ..gamma../) = 0.71 +- 0.25 is ascribed to valence neutron effects. The magnitude of the effect is close to that estimated using the optical model formalism of the valence theory.|
|Learning Resource Type||Article|
|Publisher Place||United States|
|Journal||Nucl. Sci. Eng.|
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