Monte Carlo calculation of the deexcitation of fission fragments in the spontaneous fission of /sup 252/Cf

Journal Article · Fri Jan 01 04:00:00 EST 1982 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.25.365· OSTI ID:5727053

Kildir, M; Aras, N K

The consequences of the evaporation of prompt neutrons and ..gamma.. rays from primary fission fragments in the spontaneous fission of /sup 252/Cf have been examined by a Monte Carlo method. A semiempirical mass equation and experimental values of total kinetic energies are used to obtain the sum of excitation energies of complementary fragments. The division of this energy between complementary fragments is determined by the two-spheroid model for the scission configuration. The prompt neutron multiplicity distribution gives a value of 3.68 for the average number of prompt neutrons in /sup 252/Cf (sf). Calculated values of the average number of prompt neutrons as a function of fragments mass are in good agreement with the experimental values. Calculated results for the charge dependence of total ..gamma..-ray energies show an odd-even effect, whereas no such effect is apparent in the charge dependence of the average number of neutrons. Mass and charge distributions of secondary fission fragments are also well reproduced in the calculations.

• Research Organization: Department of Chemistry, Middle East Technical University, Ankara, Turkey
• OSTI ID: 5727053
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 25:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

652016* -- Nuclear Properties & Reactions
A=220 & above
Theoretical-- Spontaneous & Induced Fission-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
BARYONS
CALIFORNIUM 252
CALIFORNIUM ISOTOPES
CHARGE DISTRIBUTION
DE-EXCITATION
DECAY
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
EVAPORATION MODEL
EVEN-EVEN NUCLEI
FERMIONS
FISSION
FISSION FRAGMENTS
FISSION NEUTRONS
GAMMA RADIATION
HADRONS
HEAVY NUCLEI
IONIZING RADIATIONS
ISOTOPES
MASS SPECTRA
MATHEMATICAL MODELS
MECHANICS
MONTE CARLO METHOD
MULTIPLICITY
NEUTRONS
NUCLEAR FRAGMENTS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PROMPT GAMMA RADIATION
PROMPT NEUTRONS
RADIATIONS
RADIOISOTOPES
SPECTRA
SPONTANEOUS FISSION
STATISTICAL MECHANICS
YEARS LIVING RADIOISOTOPES