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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
Content type Text
Language English
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.
Educational Use Research
Learning Resource Type Article
Publisher Date 1977-11-01
Publisher Place United States
Journal Nucl. Sci. Eng.
Volume Number 64
Issue Number 3


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