Theoretical and experimental cross sections for neutron reactions on /sup 64/Zinc
Accurate measurements of the /sup 64/Zn (n,2n)/sup 63/Zn and /sup 64/Zn (n,p)/sup 64/Cu cross sections at 14.8 MeV have been made using a Texas Nuclear Neutron Generator and the activation technique. A NaI(Tl) spectrometer (using two 6'' x 6'' NaI detectors/crystals) was ued to measure the gamma radiation emitted in coincidence from the positron-emitting decay products. The measurements were made relative to /sup 65/Cu (n,2n)/sup 64/Cu and /sup 63/Cu (n,2n)/sup 62/Cu cross sections, which have similar half-lives, radiation emission, and were previously measured to high accuracy (2%). The value obtained for the (n,2n) measurement was 199 +- 6 millibarns, and a value of 176 +- 4.5 millibarns was obtained for the (n,p) measurement. In concert, a theoretical analysis of neutron induced reactions on /sup 64/Zn was performed at Los Alamos National Laboratory using the Hauser-Feshbach statistical theory in the GNASH code over an energy range of 100 keV to 20 MeV. Calculations included width fluctuation corrections, direct reaction contributions, and preequilibrium corrections above 6 MeV. Neutron optical model potentials were determined for zinc. The theoretical values agree with the new 14.8 MeV measurements approximately within experimental error, with calculations of 201 millibarns for the (n,2n) cross section and 170 millibarns for the (n,p) cross section. Results from the analysis will be made available in National Evaluated Nuclear Data Format (ENDF/B) for fusion energy applications. 50 refs., 34 figs., 10 tabs.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5544684
- Report Number(s):
- LA-11233-T; ON: DE88005896
- Resource Relation:
- Other Information: Thesis (M.S.). Portions of this document are illegible in microfiche products. Thesis. Submitted to Univ. of New Mexico, Albuquerque
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COPPER 63 TARGET
NEUTRON REACTIONS
PROTON REACTIONS
COPPER 64 TARGET
COPPER 65 TARGET
CROSS SECTIONS
ZINC 64 TARGET
COMPARATIVE EVALUATIONS
CORRECTIONS
DECAY
ELASTIC SCATTERING
FLUCTUATIONS
GAMMA RADIATION
HAUSER-FESHBACH THEORY
NEUTRON DETECTION
NEUTRON FLUX
NEUTRON SOURCES
SPECTROMETERS
STATISTICAL MODELS
BARYON REACTIONS
CHARGED-PARTICLE REACTIONS
DETECTION
ELECTROMAGNETIC RADIATION
HADRON REACTIONS
IONIZING RADIATIONS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
NUCLEAR REACTIONS
NUCLEAR THEORY
NUCLEON REACTIONS
PARTICLE SOURCES
RADIATION DETECTION
RADIATION FLUX
RADIATION SOURCES
RADIATIONS
SCATTERING
TARGETS
VARIATIONS
651620* - Nuclear Properties & Reactions
A=59-89
Experimental
653003 - Nuclear Theory- Nuclear Reactions & Scattering