Investigation of the prompt-neutron spectrum for spontaneously-fissioning /sup 252/Cf

Technical Report · Fri Jan 01 04:00:00 EST 1982

DOI:https://doi.org/10.2172/6371518· OSTI ID:6371518

Poenitz, W P; Tamura, T

The prompt-fission-neutron spectrum of /sup 252/Cf was investigated. The spectrum was measured with Black Neutron Detectors which have a well known efficiency. Considerations of various issues in such measurements lead to an experiment in which a time-calibration pulser, a random pulser, the neutron detector time-of-flight spectrum, the pulse-shape-discriminator gamma time-of-flight spectrum, and the detector-response spectra were simultaneously recorded for the prompt-fission neutrons, transmission through carbon, and shadowbars in a total-cross-section-type measurement. Corrections and associated uncertainties were applied for a large variety of effects which may have been overlooked in many of the previously reported measurements. Preliminary results indicate deviations from a Maxwellian shape toward a Watt-spectrum shape. Agreement is good with the shape differences relative to a Maxwellian from the recent theoretical calculation by Madland and Nix, however, a lower average energy was found.

• Research Organization: Argonne National Lab., IL (USA); Tohoku Univ., Sendai (Japan)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6371518
• Report Number(s): CONF-820942-29; ON: DE83009085
• 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
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
BARYONS
CALIFORNIUM 252
CALIFORNIUM ISOTOPES
DATA
DECAY
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FERMIONS
FISSION
FISSION NEUTRONS
HADRONS
HEAVY NUCLEI
INFORMATION
ISOTOPES
NEUTRON SPECTRA
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
NUMERICAL DATA
PROMPT NEUTRONS
RADIOISOTOPES
SPECTRA
SPONTANEOUS FISSION
TIME-OF-FLIGHT METHOD
YEARS LIVING RADIOISOTOPES