Measurements of the energy dependence of prompt neutron emission from /sup 233/U, /sup 235/U, and /sup 239/Pu for E/sub n/ = 0. 0005 to 10 MeV relative to emission from spontaneous fission of /sup 252/Cf
A series of experiments was performed to measure the dependence on the incident neutron energy of the average number of prompt neutrons emitted per fission from /sup 233/U, /sup 235/U, and /sup 239/Pu relative to the average number of prompt neutrons emitted in spontaneous fission of /sup 252/Cf. the incident neutron energy range was 0.0005 to 10 MeV. A white neutron source was generated by the Oak Ridge Electron Linear Accelerator, and the energies of the neutrons incident on the fissile samples were determined by time-of-flight techniques. In each experiment the samples, including the /sup 252/Cf standard, were contained in a fission chamber surrounded by a large volume (0.91 m/sup 3/) of liquid scintillator loaded with gadolinium. The fission chamber detected the fission events, and the scintillator detected the accompanying prompt neutrons. The resulting data were analyzed to yield: R-bar/sub rho/(E) = v-bar/sub rho/(E)(fissile)/v-bar/sub rho/(/sup 252/Cf). For /sup 235/U and /sup 239/Pu the results overlap, within the experimental uncertainty, the results of the evaluation of Manero and Konshin, and in the case of /sup 235/U the data show the same general structure apparent in the evaluation up to 0.5 MeV. Our R-bar/sub rho/(E) for /sup 233/U does not show the structure near 0.2 MeV obtained by Manero and Konshin.
- Research Organization:
- Oak Ridge National Lab., Oak Ridge, TN 37831
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6921153
- Journal Information:
- Nucl. Sci. Eng.; (United States), Vol. 94:4
- Country of Publication:
- United States
- Language:
- English
Similar Records
Measurements of the energy dependence of prompt neutron emission from /sup 233/U, /sup 235/U, /sup 239/Pu, and /sup 241/Pu for E /SUB n/ = 0. 005 to 10 eV relative to emission from spontaneous fission of /sup 252/Cf
Measurements of the average number of prompt neutrons emitted per fission of /sup 239/Pu and /sup 235/U. [0. 005 eV to 10 MeV]
Related Subjects
CALIFORNIUM 252
SPONTANEOUS FISSION
PLUTONIUM 239
NEUTRON EMISSION
URANIUM 233
URANIUM 235
DATA ANALYSIS
ENERGY DEPENDENCE
FISSION CHAMBERS
GADOLINIUM
LIQUID SCINTILLATORS
MEV RANGE 01-10
NEUTRON SOURCES
ORELA
PROMPT NEUTRONS
TIME-OF-FLIGHT METHOD
ACCELERATORS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
BARYONS
CALIFORNIUM ISOTOPES
DECAY
ELEMENTARY PARTICLES
ELEMENTS
EMISSION
ENERGY RANGE
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
FISSION
FISSION NEUTRONS
HADRONS
HEAVY NUCLEI
IONIZATION CHAMBERS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LINEAR ACCELERATORS
MEASURING INSTRUMENTS
METALS
MEV RANGE
MINUTES LIVING RADIOISOTOPES
NEUTRON DETECTORS
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PARTICLE SOURCES
PHOSPHORS
PLUTONIUM ISOTOPES
RADIATION DETECTORS
RADIATION SOURCES
RADIOISOTOPES
RARE EARTHS
URANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES
652020* - Nuclear Properties & Reactions
A=220 & above
Experimental