Improved calculation of the prompt fission neutron spectrum from the spontaneous fission of /sup 252/Cf: Preliminary results
An improved calculation is presented for the prompt fission neutron spectrum N(E) from the spontaneous fission of /sup 252/Cf. In this calculation the fission-spectrum model of Madland and Nix is used, but with several improvements leading to a physically more accurate representation of the spectrum. Specifically, the contributions to N(E) from the entire fission-fragment mass and charge distributions will be calculated instead of calculating on the basis of a seven- point approximation to the peaks of these distributions as has been done in the past. Therefore, values of the energy release in fission, fission-fragment kinetic energy, and compound nucleus cross section for the inverse process will be considered on a point-by-point basis over the fragment yield distributions instead of considering averages of these quantities over the peaks of the distributions. Preliminary results will be presented and compared with a measurement, an earlier calculation, and a recent evaluation of the spectrum. 14 refs., 4 figs.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 7136057
- Report Number(s):
- LA-UR-88-1925; CONF-880546-28; ON: DE88014447; TRN: 88-029795
- Resource Relation:
- Conference: International conference on nuclear data for science and technology, Mito, Japan, 30 May 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CALIFORNIUM 252
SPONTANEOUS FISSION
NEUTRON SPECTRA
CALCULATION METHODS
CHARGE DISTRIBUTION
COMPOUND NUCLEI
NUCLEAR FRAGMENTS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
CALIFORNIUM ISOTOPES
DECAY
EVEN-EVEN NUCLEI
FISSION
HEAVY NUCLEI
ISOTOPES
NUCLEAR REACTIONS
NUCLEI
RADIOISOTOPES
SPECTRA
YEARS LIVING RADIOISOTOPES
653006* - Nuclear Theory- Spontaneous & Induced Fission