ORELA contribution to thorium-cycle nuclear data

Technical Report · Fri Jan 01 04:00:00 EST 1982

DOI:https://doi.org/10.2172/6709919· OSTI ID:6709919

Olsen, D K

The measurements of direct importance to the /sup 232/Th//sup 233/U fuel cycle using neutrons from the Oak Ridge Linear Accelerator Facility are gathered together and discussed. These measurements were done in response to specific data discrepancies, as part of generic programs, and for basic fission physics studies. In particular, completed transmission and capture work on /sup 232/Th has yielded the most accurate parameters for the first four s-wave resonances; the largest average capture width, 25.2 MeV; and the largest s-wave strength function of recent measurements. These results allow improved agreement between differential and integral capture rates. Moreover, the ORNL /sup 252/Cf anti nu measurement of unprecedented accuracy and /sup 233/U anti nu ratio measurement give a /sup 233/U prompt anti nu (thermal) of 2.490 +- 0.009 neutron/fission. This result allows a much more satisfactory understanding of the /sup 233/U 2200 m/s constants. In addition, a /sup 232/Th ..gamma..-ray production measurement provides needed cross sections for shielding, and important data for both application and fission physics were obtained from /sup 232/Th fission and both /sup 231/Pa and /sup 234/U fission and total cross section measurements. Data requirements and discrepancies suggested from this work are discussed.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6709919
• Report Number(s): CONF-821082-2; ON: DE83001953
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220100 -- Nuclear Reactor Technology-- Theory & Calculation
652025 -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Nuclear Reactions & Scattering-- (-1987)
652026* -- Nuclear Properties & Reactions
A=220 & above
Experimental-- Spontaneous & Induced Fission-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
BARYON REACTIONS
BARYONS
CALIFORNIUM 252
CALIFORNIUM ISOTOPES
CAPTURE
CROSS SECTIONS
DATA
DECAY
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
FERMIONS
FISSION
FISSION NEUTRONS
FUEL CYCLE
HADRON REACTIONS
HADRONS
HEAVY NUCLEI
INFORMATION
ISOTOPES
MULTIPLICITY
NEUTRAL-PARTICLE TRANSPORT
NEUTRON REACTIONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
PHYSICS
PROMPT NEUTRONS
PROTACTINIUM ISOTOPES
RADIATION TRANSPORT
RADIOISOTOPES
REACTOR PHYSICS
SPONTANEOUS FISSION
TARGETS
THORIUM 232 TARGET
THORIUM CYCLE
TOTAL CROSS SECTIONS
URANIUM 233 TARGET
YEARS LIVING RADIOISOTOPES