Elastic scattering of 50 MeV. pi. /sup +- / from /sup 58/Ni, /sup 60/Ni, and /sup 64/Ni

Journal Article · Thu Sep 01 04:00:00 EDT 1988 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.38.1316· OSTI ID:6951677

Mishra, C S; Fick, B; Blecher, M; Burger, W; Burman, R L; Ciangaru, G; Escalante, J; Gotow, K; Hynes, M V; Preedom, B M; others, and

Angular distributions have been measured for ..pi../sup +- / elastic scattering at 50 MeV from /sup 58/Ni, /sup 60/Ni, and /sup 64/Ni. A target isospin dependence is observed in the ..pi../sup +/ angular distributions in the region of the diffraction minimum, while the effect is less pronounced for ..pi../sup -/. The ..pi../sup -/ angular distributions for these isotopes have a very deep minimum compared with those for ..pi../sup +/. The angular distributions are compared with predictions of the second-order Michigan State University potential. The potential describes the ..pi../sup +/ data much better than the ..pi../sup -/ data, though qualitative agreement was obtained for both. The discrepancy between the experimental and calculated cross sections is discussed. The Coulomb distortion of the nuclear amplitude is shown to be important in the region of the diffraction minimum. The ..pi../sup +//..pi../sup -/ difference introduced by this distortion is responsible for the striking energy dependence of the cross sections near the diffraction minimum between 50 and 80 MeV and can account for the poorer agreement for ..pi../sup -/.

• Research Organization: University of South Carolina, Columbia, South Carolina 29208 Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061 Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 Los Alamos National Laboratory, Los Alamos, New Mexico 87545 University of
• OSTI ID: 6951677
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 38:3; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651520* -- Nuclear Properties & Reactions
A=39-58
Experimental
653001 -- Nuclear Theory-- Nuclear Structure
Moments
Spin
& Models
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ANGULAR DISTRIBUTION
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
CYCLIC ACCELERATORS
CYCLOTRONS
DISTRIBUTION
ELASTIC SCATTERING
ENERGY DEPENDENCE
ENERGY RANGE
HADRON REACTIONS
ISOCHRONOUS CYCLOTRONS
ISOSPIN
LAMPF LINAC
LINEAR ACCELERATORS
MESON FACTORIES
MESON REACTIONS
MEV RANGE
MEV RANGE 10-100
MSU CYCLOTRONS
NICKEL 58 TARGET
NICKEL 60 TARGET
NICKEL 64 TARGET
NUCLEAR REACTIONS
OPTICAL MODELS
PARTICLE PROPERTIES
PION MINUS REACTIONS
PION PLUS REACTIONS
PION REACTIONS
SCATTERING
TARGETS