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Excitation functions of (n,t) reactions on /sup 27/Al, /sup 59/Co, and /sup 93/Nb

Journal Article · · Phys. Rev. C; (United States)
; ;
Cross sections were measured for (n,t) reactions on /sup 27/Al, /sup 59/Co, and /sup 93/Nb over the incident neutron energy region of 16 to 20 MeV using activation and tritium counting. Three or four segments of the material under investigation were so arranged that a compact hemispherical geometry was obtained. The incident neutrons were produced by the /sup 3/H(d,n)/sup 4/He reaction and the neutron energy spectrum effective for each segment was determined via Monte Carlo calculations. After irradiation, the accumulated tritium was separated from each segment by vacuum extraction and its activity determined by low-level anticoincidence ..beta../sup -/ counting in the gas phase. The (n,t) cross section increases with the incident neutron energy. The excitation function of the (n,t) reaction on /sup 27/Al is described well by Hauser-Feshbach calculations; in the case of /sup 59/Co and /sup 93/Nb, however, the calculated cross section values are appreciably smaller than the experimental data, suggesting that for those nuclei the contributions of statistical processes are rather small.
Research Organization:
Institute fuer Chemie 1 (Nuklearchemie), Kernforschungsanlage Juelich GmbH, D-517 Juelich, Federal Republic of Germany
OSTI ID:
5727695
Journal Information:
Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 25:1; ISSN PRVCA
Country of Publication:
United States
Language:
English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM 27 TARGET
BARYON REACTIONS
CHARGED PARTICLES
COBALT 59 TARGET
CROSS SECTIONS
DIRECT REACTIONS
ENERGY DEPENDENCE
ENERGY RANGE
ENERGY SPECTRA
EXCITATION FUNCTIONS
FUNCTIONS
HADRON REACTIONS
HAUSER-FESHBACH THEORY
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
MONTE CARLO METHOD
MULTI-NUCLEON TRANSFER REACTIONS
NEUTRON REACTIONS
NIOBIUM 93 TARGET
NUCLEAR REACTIONS
NUCLEAR THEORY
NUCLEON REACTIONS
PICKUP REACTIONS
SPECTRA
STATISTICAL MODELS
TARGETS
TRANSFER REACTIONS
TRITONS
TWO-NUCLEON TRANSFER REACTIONS