Measurements and calculations of the leakage multiplication from hollow beryllium spheres

Conference · Mon Jul 01 04:00:00 EDT 1985 · Fusion Technol.; (United States)

OSTI ID:5790590

Wong, C; Bauer, R W; Haight, R C; Hansen, R C; Howerton, R J; Komoto, T T; Lee, J D; Perkins, S T; Plechaty, E F; Pohl, B A

Using the Pulsed-Sphere Method, the leakage spectra from hollow Be spheres of 4.5, 13.8 and 19.9 cm thickness have been measured. The predicted copious production of epithermal and thermal neutrons from the 13.8 and 19.9 cm spherical shells has been verified. A quantitative comparison of measured and calculated time-of-arrival count spectra over the energy range from thermal to ..integral.. 15 MeV indicates that the ENDL-84 library overestimates the leakage spectra between 2 and 10 MeV and in the epithermal and thermal energy regions. In the remaining regions, the leakage spectra are underestimated. Because of the above compensation the inferred leakage multiplication for the 19.9 cm Be is ..integral.. 3% higher than calculations. In the case of the 13.8 cm Be, the compensation is less exact and the inferred leakage multiplication is ..integral.. 9% higher than calculations.

• Research Organization: Lawrence Livermore National Laboratory, Livermore, CA
• OSTI ID: 5790590
• Report Number(s): CONF-850310-
• Conference Information: Journal Name: Fusion Technol.; (United States) Journal Volume: 8:1
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700201* -- Fusion Power Plant Technology-- Blanket Engineering
700209 -- Fusion Power Plant Technology-- Component Development & Materials Testing
ALKALINE EARTH METALS
BARYONS
BERYLLIUM
BREEDING PELLETS
ELEMENTARY PARTICLES
ELEMENTS
EPITHERMAL NEUTRONS
FERMIONS
HADRONS
MATERIALS
METALS
MULTIPLICATION FACTORS
NEUTRON LEAKAGE
NEUTRON SPECTRA
NEUTRONS
NUCLEONS
PULSE TECHNIQUES
SPECTRA
SPHERES
THERMAL NEUTRONS
THERMONUCLEAR REACTOR MATERIALS