Prompt neutrons from the low-energy fission of atomic nuclei

Journal Article · Thu May 01 04:00:00 EDT 1986 · Sov. At. Energy (Engl. Transl.); (United States)

OSTI ID:5235703

Gerasimenko, B F; Rubchenya, V A

The characteristics of prompt fission neutrons (PFN)--spectra and average number of neutrons--are important for nuclear reactor calculations. This paper takes into account the special features associated with the characteristics of the fission fragments. The Hauser-Feshbach statistical theory is used to calculate the characteristics of PFN with the following differences: a more accurate account of the cascade nature of neutron emission is presented, a different method of determining the average excitation energy of the fragments is used, and an expression for the level density which takes account of the shell structure of nuclei is given. Results are presented of a calculation of the spectra and multiplicity distribution of PFN for the most important cases, namely the spontaneous fission of Cf 252 and the thermal-neutron fission of U 235.

• OSTI ID: 5235703
• Journal Information: Sov. At. Energy (Engl. Transl.); (United States), Journal Name: Sov. At. Energy (Engl. Transl.); (United States) Vol. 59:5; ISSN SATEA
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220100* -- Nuclear Reactor Technology-- Theory & Calculation
652016 -- Nuclear Properties & Reactions
A=220 & above
Theoretical-- Spontaneous & Induced Fission-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BARYONS
CALIFORNIUM 252 TARGET
CENTER-OF-MASS SYSTEM
COMPOUND NUCLEI
DECAY
DISTRIBUTION FUNCTIONS
ELECTRONIC STRUCTURE
ELEMENTARY PARTICLES
ENERGY-LEVEL DENSITY
FERMIONS
FISSION
FISSION FRAGMENTS
FISSION NEUTRONS
FISSION YIELD
FUNCTIONS
HADRON REACTIONS
HADRONS
HAUSER-FESHBACH THEORY
KINETICS
MULTIPLICATION FACTORS
NEUTRON REACTIONS
NEUTRON SPECTRA
NEUTRONS
NUCLEAR FRAGMENTS
NUCLEAR REACTION YIELD
NUCLEAR REACTIONS
NUCLEAR THEORY
NUCLEON REACTIONS
NUCLEONS
PROMPT NEUTRONS
REACTOR KINETICS
SPECTRA
SPONTANEOUS FISSION
TARGETS
THERMAL FISSION
URANIUM 235 TARGET
YIELDS