skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: 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]

Abstract

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)

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
OSTI Identifier:
7329730
Resource Type:
Journal Article
Journal Name:
Phys. Rev., C; (United States)
Additional Journal Information:
Journal Volume: 14:6
Country of Publication:
United States
Language:
English
Subject:
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)

Citation Formats

Robinson, R L, Bair, J K, Johnson, C H, Stelson, P H, Dress, W B, and Jones, C M. 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]. United States: N. p., 1976. Web. doi:10.1103/PhysRevC.14.2126.
Robinson, R L, Bair, J K, Johnson, C H, Stelson, P H, Dress, W B, & Jones, C M. 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]. United States. https://doi.org/10.1103/PhysRevC.14.2126
Robinson, R L, Bair, J K, Johnson, C H, Stelson, P H, Dress, W B, and Jones, C M. 1976. "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]". United States. https://doi.org/10.1103/PhysRevC.14.2126.
@article{osti_7329730,
title = {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]},
author = {Robinson, R L and Bair, J K and Johnson, C H and Stelson, P H and Dress, W B and Jones, C M},
abstractNote = {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)},
doi = {10.1103/PhysRevC.14.2126},
url = {https://www.osti.gov/biblio/7329730}, journal = {Phys. Rev., C; (United States)},
number = ,
volume = 14:6,
place = {United States},
year = {Wed Dec 01 00:00:00 EST 1976},
month = {Wed Dec 01 00:00:00 EST 1976}
}