Positive-pion-nucleus elastic scattering at 20 MeV

Journal Article · Wed Jun 01 04:00:00 EDT 1983 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.27.2753· OSTI ID:5833382

Obenshain, F E; Bertrand, F E; Cross, E E

Measurements of positive-pion elastic scattering cross sections at 20 MeV have been made in the angular range 30/sup 0/--150/sup 0/. Angular distributions were obtained for targets of /sup 12/C, /sup 16/O, /sup 40/Ca, /sup 90/Zr, /sup 120/Sn, and /sup 208/Pb. The data were fit with a phenomenological optical model potential calculation to obtain the real and imaginary s- and p-wave strength parameters. These parameters are compared to those obtained from data at 30, 40, and 50 MeV. Cross sections calculated from an optical model potential based on pionic atom data are in good agreement with our data at 20 MeV.

• Research Organization: Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
• OSTI ID: 5833382
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 27:6; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
CALCIUM 40 TARGET
CARBON 12 TARGET
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELASTIC SCATTERING
ENERGY RANGE
HADRON REACTIONS
LEAD 208 TARGET
MESON REACTIONS
MEV RANGE
MEV RANGE 10-100
NUCLEAR REACTIONS
OPTICAL MODELS
OXYGEN 16 TARGET
P WAVES
PARTIAL WAVES
PION PLUS REACTIONS
PION REACTIONS
S WAVES
SCATTERING
TARGETS
TIN 120 TARGET
ZIRCONIUM 90 TARGET