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Radiochemical detector cross section sensitivity studies in the A approx. = 90 mass region

Technical Report ·
DOI:https://doi.org/10.2172/7118188· OSTI ID:7118188

The use of radiochemical detectors in the A approx. = 90 mass region to measure 14 MeV neutron fluences is investigated from the standpoint of cross section sensitivities. Specifically, /sup 90/Zr and /sup 89/Y neutron-induced cascades leading to the production of /sup 89/Zr, /sup 88/Zr, /sup 88/Y, and /sup 87/Y are studied in a one-energy-group approximation, and the sensitivities of the measured ratios R/sub Z/ = /sup 88/Zr//sup 89/Zr and R/sub Y/ = /sup 87/Y//sup 88/Y to the input cross sections are delineated. The most sensitive cross section in each cascade is the cross section that dominates the production of the final isotope in the chain. Only one of the isomeric levels in /sup 90/Zr contributes importantly to the Zr cascade. Burnback (n,..gamma..) and burnup (n,p) reactions are also considered. The (n,..gamma..) effects are small, but (n,p) effects can be substantial due to low energy enhancements of (n,p) cross sections in the neutron-deficient isotopes.

Research Organization:
Lawrence Livermore National Lab., CA (USA)
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
7118188
Report Number(s):
UCID-20059; ON: DE84010954
Country of Publication:
United States
Language:
English

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Related Subjects

440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
651615 -- Nuclear Properties & Reactions
A=59-89
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
651715 -- Nuclear Properties & Reactions
A=90-149
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTIVATION DETECTORS
BARYON REACTIONS
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CROSS SECTIONS
DATA
DAYS LIVING RADIOISOTOPES
DETECTION
DIRECT REACTIONS
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FAST NEUTRONS
FERMIONS
GAMMA SPECTRA
HADRON REACTIONS
HADRONS
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOMERIC TRANSITIONS
ISOTOPES
MEASURING INSTRUMENTS
MEV RANGE
MEV RANGE 10-100
MINUTES LIVING RADIOISOTOPES
NEUTRON DETECTION
NEUTRON DETECTORS
NEUTRON FLUENCE
NEUTRON REACTIONS
NEUTRONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
RADIATION DETECTION
RADIATION DETECTORS
RADIOISOTOPES
SCATTERING
SECONDS LIVING RADIOISOTOPES
SENSITIVITY
SPECTRA
STABLE ISOTOPES
TARGETS
THEORETICAL DATA
YTTRIUM 87
YTTRIUM 88
YTTRIUM 89
YTTRIUM 89 TARGET
YTTRIUM ISOTOPES
ZIRCONIUM 88
ZIRCONIUM 89
ZIRCONIUM 90
ZIRCONIUM 90 TARGET
ZIRCONIUM ISOTOPES