Neutron multiplicity measurements of Cf and Fm isotopes

Journal Article · Fri Feb 01 00:00:00 EST 1980 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.21.637· OSTI ID:5754475

Hoffman, D C; Ford, G P; Balagna, J P; Veeser, L R

Prompt neutrons in coincidence with the fission fragments from the spontaneous fission of /sup 250,252,254/Cf and /sup 257/Fm were measured inside a 75-cm-diameter, Gd-loaded liquid scintillation counter having a neutron-detection efficiency of about 78%. Measurements for /sup 256/Fm were done just outside the counter with an efficiency of 31%. The kinetic energies of both fission fragments and the number of neutrons for each fission event were recorded. From these data, the fragment kinetic energies and masses and the neutron multiplicity distributions were determined for /sup 250,252,254/Cf and /sup 257/Fm. Variances of neutron multiplicity distributions as a function of total fragment kinetic energy and the ratio of fragment masses have been calculated and are presented for all the nuclides studied.

• Research Organization: Los Alamos Scientific Laboratory, Los Alamos, New Mexico 87545
• OSTI ID: 5754475
• Journal Information: Phys. Rev., C; (United States), Vol. 21:2
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALIFORNIUM 250
SPONTANEOUS FISSION
CALIFORNIUM 252
CALIFORNIUM 254
FERMIUM 257
PROMPT NEUTRONS
MULTIPLICITY
COINCIDENCE SPECTROMETRY
FERMIUM 256
FISSION FRAGMENTS
KINETIC ENERGY
MASS SPECTRA
SCINTILLATION COUNTERS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
BARYONS
CALIFORNIUM ISOTOPES
DAYS LIVING RADIOISOTOPES
DECAY
ELEMENTARY PARTICLES
ENERGY
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
FERMIUM ISOTOPES
FISSION
FISSION NEUTRONS
HADRONS
HEAVY NUCLEI
HOURS LIVING RADIOISOTOPES
ISOTOPES
MEASURING INSTRUMENTS
NEUTRONS
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
RADIATION DETECTORS
RADIOISOTOPES
SPECTRA
YEARS LIVING RADIOISOTOPES
652026* - Nuclear Properties & Reactions
A=220 & above
Experimental- Spontaneous & Induced Fission- (-1987)