Neutron capture cross section of yttrium-89. [2. 5 to 100 keV]

Journal Article · Tue Nov 01 04:00:00 EST 1977 · Nucl. Sci. Eng.; (United States)

OSTI ID:5175071

Boldeman, J W ^[1]; Allen, B J; de L Musgrove, A R; Macklin, R L

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1. Australian Atomic Energy Commission Research Establishment, Sutherland

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.

• OSTI ID: 5175071
• Journal Information: Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 64:3; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

651625* -- Nuclear Properties & Reactions
A=59-89
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
BARYON REACTIONS
CAPTURE
ENERGY RANGE
HADRON REACTIONS
KEV RANGE
KEV RANGE 01-10
KEV RANGE 10-100
LEVEL WIDTHS
MATHEMATICAL MODELS
NEUTRON REACTIONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEON REACTIONS
OPTICAL MODELS
P WAVES
PARTIAL WAVES
PARTICLE PROPERTIES
RESONANCE
S WAVES
SPIN
TARGETS
VALENCY MODEL
YTTRIUM 89 TARGET