Cross sections for the Ni, Cu, Zn/sup 16/, /sup 18/O, xn) reactions near the Coulomb barrier. [Comparisons with optical model, sharp cutoff model, parabolic barrier model]

Journal Article · Wed Dec 01 00:00:00 EST 1976 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.14.2126· OSTI ID:7329730

Robinson, R L; Bair, J K; Johnson, C H; Stelson, P H; Dress, W B; Jones, C M

Cross sections for neutron emitting reactions induced by /sup 16/,/sup 18/O bombardment of /sup 58/,/sup 60/,/sup 61/,/sup 62/,/sup 64/Ni, /sup 63/,/sup 65/Cu, and /sup 64/,/sup 66/,/sup 67/,/sup 68/,/sup 70/Zn targets have been measured for projectile energies between 36 and 55 MeV by means of a large graphite sphere with embedded /sup 10/BF/sub 3/ detectors. Comparisons were made with the total reaction cross section calculated with (1) the optical model, (2) the sharp cutoff model, and (3) the parabolic-barrier model. The data are generally in good agreement with the optical-model predictions above the Coulomb barrier if the neutrons are assumed to be emitted statistically from a compound nucleus and if fusion is the predominant mechanism. Interaction barriers obtained from the parabolic-barrier model yield interaction radii with values of (1.54 to 1.65) x (A/sub T/ /sup 1//sup /3/ + A/sub P/ /sup 1//sup /3/) fm. (AIP)

• Research Organization: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
• OSTI ID: 7329730
• Journal Information: Phys. Rev., C; (United States), Vol. 14:6
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COPPER 63 TARGET
OXYGEN 16 REACTIONS
OXYGEN 18 REACTIONS
COPPER 65 TARGET
NICKEL 58 TARGET
COMPOUND-NUCLEUS REACTIONS
NICKEL 60 TARGET
NICKEL 61 TARGET
NICKEL 62 TARGET
NICKEL 64 TARGET
ZINC 64 TARGET
ZINC 66 TARGET
ZINC 67 TARGET
ZINC 68 TARGET
ZINC 70 TARGET
COULOMB FIELD
MEV RANGE 10-100
NEUTRON SPECTRA
NUCLEAR REACTION YIELD
OPTICAL MODELS
TOTAL CROSS SECTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
ELECTRIC FIELDS
ENERGY RANGE
HEAVY ION REACTIONS
MEV RANGE
NUCLEAR REACTIONS
SPECTRA
TARGETS
YIELDS
651625* - Nuclear Properties & Reactions
A=59-89
Experimental- Nuclear Reactions & Scattering- (-1987)
651525 - Nuclear Properties & Reactions
A=39-58
Experimental- Nuclear Reactions & Scattering- (-1987)