Excitation function and isomeric cross-section ratio for the [sup 61]Ni([ital p],[alpha])[sup 58]Co[sup [ital m],][ital g] process

Journal Article · Wed Dec 01 04:00:00 EST 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.48.3115· OSTI ID:5682582

Sudar, S; Szelecsenyi, F; Qaim, S M ^[1]

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1. Institut fuer Nuklearchemie, Forschungszentrum Juelich GmbH, 52425 Juelich (Germany) Institut of Experimental Physics, Kossuth University, H-4001 Debrecen (Hungary)

Excitation functions were measured by the stacked-foil technique for [sup 61]Ni([ital p],[alpha])[sup 58]Co[sup [ital m]] and [sup 61]Ni([ital p],[alpha])[sup 58]Co[sup [ital m]+[ital g]] reactions using 88.84% enriched [sup 61]Ni from threshold up to 18.6 MeV. Thin samples of [sup 61]Ni were prepared by electrodeposition on gold foils. The radioactivity of the activation products was determined via high resolution x- and [gamma]-ray spectrometry. From the measured experimental data isomeric cross-section ratios [[sigma][sub [ital m]]/[sigma][sub [ital m]+[ital g]]] were deduced. Statistical model calculations taking into account precompound effects were performed for the strong [sup 61]Ni([ital p],[ital xn]) channels as well as for the weak [sup 61]Ni([ital p],[alpha]) process. The experimental [sup 61]Ni([ital p],[ital xn]) and [sup 61]Ni([ital p],[alpha]) excitation functions are described well by the calculation over the whole investigated energy range. The isomeric cross-section ratio for the isomeric pair [sup 58]Co[sup [ital m],][ital g] formed in the [sup 61]Ni([ital p],[alpha]) process is also reproduced well by the model calculation, provided the input level scheme and the spin distribution are properly taken into account.

• OSTI ID: 5682582
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 48:6; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663430* -- Nucleon-Induced Reactions & Scattering-- (1992-)
663550 -- Nuclear Mass Ranges-- A=59-89-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA PARTICLES
BARYON REACTIONS
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
COBALT 58
COBALT ISOTOPES
CROSS SECTIONS
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY RANGE
EXCITATION FUNCTIONS
FERMIONS
FUNCTIONS
HADRON REACTIONS
HADRONS
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC NUCLEI
ISOMERIC TRA
ISOTOPES
MEV RANGE
MEV RANGE 10-100
NEUTRONS
NICKEL 61 TARGET
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
PROTON REACTIONS
RADIOISOTOPES
TARGETS