Subthreshold fission cross section of /sup 240/Pu and the fission cross sections of /sup 235/U and /sup 239/Pu

Journal Article · Sat Dec 31 23:00:00 EST 1983 · Nucl. Sci. Eng.; (United States)

OSTI ID:5490040

Weston, L W; Todd, J H

The subthreshold fission cross section of 240 Pu was measured relative to the /sup 10/B(n,..cap alpha..) or the /sup 6/Li(n,..cap alpha..) cross sections from 20 eV to 100 keV. Resonance parameter fits to the data were derived from 20 to 5700 eV. Many more resonances and more resonance structure were observed than in previous measurements. During the course of this measurement, the fission cross sections of /sup 235/U and /sup 239/Pu were also measured and are compared to the ENDF/B-V evaluation. The /sup 235/U experiment is in good agreement with ENDF/B-V; however, the /sup 239/Pu measurement is lower than ENDF/B-V and many of the previous measurements, particularly above 25 KeV. 16 references, 12 figures, 8 tables.

• Research Organization: Oak Ridge National Lab., TN
• OSTI ID: 5490040
• Journal Information: Nucl. Sci. Eng.; (United States), Journal Name: Nucl. Sci. Eng.; (United States) Vol. 88; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

652026* -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Spontaneous & Induced Fission-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
CROSS SECTIONS
DATA
ENERGY RANGE
EXPERIMENTAL DATA
FISSION
FISSION BARRIER
FISSION RATIO
HADRON REACTIONS
INFORMATION
KEV RANGE
KEV RANGE 01-10
KEV RANGE 10-100
KEV RANGE 100-1000
NEUTRON REACTIONS
NUCLEAR POTENTIAL
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
PLUTONIUM 239 TARGET
PLUTONIUM 240 TARGET
POTENTIALS
RESONANCE
TARGETS
THERMAL FISSION
URANIUM 235 TARGET