Published May 24, 2005 | Version v1
Journal article Metadata-only

Multiplicities and Spectra of Prompt-Fission Neutrons up to 200 MeV

Creators

  • 1. Joint Institute of Nuclear and Energy Research - 'Sosny', 220109, Minsk (Belarus)
  • 2. Institute of Physics and Power Engineering, Obninsk (Russian Federation)

Description

Statistical model calculations were performed to interpret the prompt-fission neutron spectra (PFNS) from 238U(n,f) and 232Th(n,f) reactions for the incident neutron energies En ∼ 6-18 MeV. Spectra of the pre-fission (pre-saddle) (n,xnf) reaction neutrons, were calculated with the Hauser-Feshbach statistical model, fission and (n,xn) reaction cross-section data being described consistently. The dependence of these contributions on the target nuclide fissility and incident neutron energy is shown to be pronounced in the PFNS shapes. A model is proposed to calculate the average number of prompt-fission neutrons up to 200 MeV; contributions of pre- and post-fission neutrons are estimated

Additional details

Identifiers

DOI
10.1063/1.1945006;

Publishing Information

Journal Title
AIP Conference Proceedings
Journal Volume
769
Journal Issue
1
Journal Page Range
p. 282-285
ISSN
0094-243X
CODEN
APCPCS

Conference

Title
International conference on nuclear data for science and technology
Dates
26 Sep - 1 Oct 2004
Place
Santa Fe, NM (United States)

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
37035051
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CROSS SECTIONS; FISSION; FISSION NEUTRONS; HAUSER-FESHBACH THEORY; MEV RANGE; MULTIPLICITY; NEUTRON REACTIONS; NEUTRON SPECTRA; NUCLEAR DATA COLLECTIONS; STATISTICAL MODELS; THORIUM 232; URANIUM 238
Descriptors DEC
ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; BARYON REACTIONS; BARYONS; ELEMENTARY PARTICLES; ENERGY RANGE; EVEN-EVEN NUCLEI; FERMIONS; HADRON REACTIONS; HADRONS; HEAVY NUCLEI; ISOTOPES; MATHEMATICAL MODELS; NEUTRONS; NUCLEAR REACTIONS; NUCLEAR THEORY; NUCLEI; NUCLEON REACTIONS; NUCLEONS; RADIOISOTOPES; SPECTRA; SPONTANEOUS FISSION RADIOISOTOPES; THORIUM ISOTOPES; URANIUM ISOTOPES; YEARS LIVING RADIOISOTOPES

Optional Information

Notes
(c) 2005 American Institute of Physics