FPDCYS and FPSPEC: computer programs for calculating fission-product beta and gamma multigroup spectra from ENDF/B-IV data. [In FORTRAN]

Technical Report · Sun May 01 04:00:00 EDT 1977

OSTI ID:7307963

Stamatelatos, M G; England, T R

FPDCYS and FPSPEC are two FORTRAN computer programs used at the Los Alamos Scientific Laboratory (LASL), in conjunction with the CINDER-10 program, for calculating cumulative fission-product beta and/or gamma multigroup spectra in arbitrary energy structures, and for arbitrary neutron irradiation periods and cooling times. FPDCYS processes ENDF/B-IV fission-product decay energy data to generate multigroup beta and gamma spectra from individual ENDF/B-IV fission-product nuclides. FPSPEC further uses these spectra and the corresponding nuclide activities calculated by the CINDER-10 code to produce cumulative beta and gamma spectra in the same energy grids in which FPDCYS generates individual isotope decay spectra. The code system consisting of CINDER-10, FPDCYS, and FPSPEC has been used for comparisons with experimental spectra and continues to be used at LASL for generating spectra in special user-oriented group structures. 3 figures.

• Research Organization: Los Alamos Scientific Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 7307963
• Report Number(s): LA-NUREG-6818-MS
• Country of Publication: United States
• Language: English

Related Subjects

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A=220 & above
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ACCIDENTS
AFTER-HEAT
BASIC INTERACTIONS
BETA DECAY
BETA SPECTRA
COMPUTER CODES
DECAY
ENERGY
F CODES
FISSION PRODUCTS
FORTRAN
GAMMA SPECTRA
INTERACTIONS
ISOTOPES
LEPTONIC DECAY
LOSS OF COOLANT
MULTIGROUP THEORY
NEUTRON TRANSPORT THEORY
PARTICLE DECAY
PROGRAMMING LANGUAGES
Q-VALUE
RADIOACTIVE MATERIALS
REACTOR ACCIDENTS
SPECTRA
TRANSPORT THEORY
WEAK INTERACTIONS
WEAK PARTICLE DECAY