Positive-pion-nucleus elastic scattering at 20 MeV

Journal Article · Wed Jun 01 00:00:00 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), Vol. 27:6
• Country of Publication: United States
• Language: English

Related Subjects

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