Excitation functions and isomeric cross-section ratios for the sup 90 Zr( n , p ) sup 90 Y sup m , g and sup 91 Zr( n , p ) sup 91 Y sup m , g
- Institut fuer Chemie 1 (Nuklearchemie), Forschungszentrum Juelich GmbH, D-5170 Juelich (Federal Republic of Germany)
- Institut fuer Radiumforschung und Kernphysik, Universitaet Wien, A-1090 Vienna (Austria)
Excitation functions were measured for the {sup 90}Zr({ital n},{ital p}){sup 90}Y{sup {ital m}+{ital g}} and {sup 91}Zr({ital n},{ital p}){sup 91}Y{sup {ital m}+{ital g}} reactions over the neutron energy range of 6.5 to 10.6 MeV. Use was made of the activation technique in combination with radiochemical separation and low-level'' {beta}{sup {minus}} counting. From the available experimental data isomeric cross-section ratios were determined. Statistical model calculations taking into account precompound effects were performed for the formation of both the isomeric and ground states of the product. The calculational results on the total ({ital n},{ital p}) cross sections agree well with the experimental data. The measured and calculated cross sections for the formation of the isomeric states also agree up to an incident neutron energy of 10 MeV; at higher energies, however, the calculated values are appreciably higher. In the case of isomeric cross-section ratios good agreement was found between experiment and theory up to 10 MeV; at higher energies the calculated values are consistently higher.
- OSTI ID:
- 6505069
- Journal Information:
- Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 42:1; ISSN 0556-2813; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
A=90-149
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ANGULAR MOMENTUM
BARYON REACTIONS
BARYONS
CHARGE-EXCHANGE REACTIONS
CROSS SECTIONS
CYCLIC ACCELERATORS
CYCLOTRONS
ELEMENTARY PARTICLES
ENERGY RANGE
EXCITATION FUNCTIONS
FERMIONS
FUNCTIONS
GE SEMICONDUCTOR DETECTORS
HADRON REACTIONS
HADRONS
ISOCHRONOUS CYCLOTRONS
ISOMERIC NUCLEI
JULIC CYCLOTRON
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MEV RANGE
MEV RANGE 01-10
MEV RANGE 10-100
NEUTRON REACTIONS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
PARTICLE PROPERTIES
PROTONS
RADIATION DETECTORS
SEMICONDUCTOR DETECTORS
SPIN
STATISTICAL MODELS
STRENGTH FUNCTIONS
TARGETS
TOTAL CROSS SECTIONS
ZIRCONIUM 90 TARGET
ZIRCONIUM 91 TARGET