URR (Unresolved Resonance Region) computer code: A code to calculate resonance neutron cross-section probability tables, Bondarenko self-shielding factors, and self-indication ratios for fissile and fertile nuclides
The URR computer code has been developed to calculate cross-section probability tables, Bondarenko self-shielding factors, and self- indication ratios for fertile and fissile isotopes in the unresolved resonance region. Monte Carlo methods are utilized to select appropriate resonance parameters and to compute the cross sections at the desired reference energy. The neutron cross sections are calculated by the single-level Breit-Wigner formalism with s-, p-, and d-wave contributions. The cross-section probability tables are constructed by sampling the Doppler broadened cross-section. The various shelf-shielded factors are computed numerically as Lebesgue integrals over the cross-section probability tables. 6 refs.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5724357
- Report Number(s):
- ORNL/TM-11297; ON: DE89016941
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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PAPIN: A Fortran-IV program to calculate cross section probability tables, Bondarenko and transmission self-shielding factors for fertile isotopes in the unresolved resonance region
A New Method for Generating Probability Tables in the Unresolved Resonance Region
Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
FISSILE MATERIALS
NEUTRON REACTIONS
U CODES
COMPUTER CALCULATIONS
CROSS SECTIONS
DOPPLER BROADENING
FORTRAN
MONTE CARLO METHOD
SCATTERING
SHIELDING
BARYON REACTIONS
COMPUTER CODES
FISSIONABLE MATERIALS
HADRON REACTIONS
LINE BROADENING
MATERIALS
NUCLEAR REACTIONS
NUCLEON REACTIONS
PROGRAMMING LANGUAGES
653003* - Nuclear Theory- Nuclear Reactions & Scattering
654001 - Radiation & Shielding Physics- Radiation Physics
Shielding Calculations & Experiments
990220 - Computers
Computerized Models
& Computer Programs- (1987-1989)