Elastic and inelastic scattering of 50 MeV pions from sup 12 C

Thesis/Dissertation · Sun Jan 01 04:00:00 EST 1989

OSTI ID:6051733

Escalante Gochez, J A

Elastic and inelastic scattering of 50 MeV pions from {sup 12}C were measured at the Clinton P. Anderson Meson Physics Facility (LAMPF) using the Low Energy Pion (LEP) Channel and the new dipole magnet facility The Clamshell Spectrometer. The {pi}{sup {+-}} elastic scattering is parameterized by a single set of strength parameters using a standard Kisslinger form for the optical potential. The measured angular distributions are then compared with all of the existing data. The cross section ratio R={sigma}(12.71Mev)/{sigma}(15.11MeV) for {pi}{sup {+-}} was measured and is compared with ratios measured at other energies. The isospin average ratio is used to extract the isospin mixing matrix element H{sub 01}. The energy dependence of this ratio indicates inadequacies of the impulse approximation. The measurement of the angular distribution of inelastic scattering to the 12.7 MeV excitation (1{sup +}, T=0) is presented. Calculation of the angular distribution for inelastic scattering to the 4.4 MeV excited state (0{sub 1}{sup +} to the 2{sub 1}{sup +}) is done using a distorted wave impulse approximation with the optical potential parameters obtained from the parameterization of the elastic scattering. A similar calculation for the 0{sub 2}{sup +} using a monopole transition density is also presented. A one step and two step coupled-channels calculation is also done.

• Research Organization: South Carolina Univ., Columbia, SC (USA)
• OSTI ID: 6051733
• Country of Publication: United States
• Language: English

Related Subjects

651320* -- Nuclear Properties & Reactions
A=6-19
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
BORN APPROXIMATION
CARBON 12
CARBON ISOTOPES
CHARGED-PARTICLE REACTIONS
COUPLED CHANNEL BORN APPROXIMATION
DATA
DISTRIBUTION
ELASTIC SCATTERING
ENERGY RANGE
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
HADRON REACTIONS
INELASTIC SCATTERING
INFORMATION
ISOSPIN
ISOTOPES
LIGHT NUCLEI
MESON REACTIONS
MEV RANGE
MEV RANGE 10-100
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
PARTICLE PROPERTIES
PION REACTIONS
SCATTERING
STABLE ISOTOPES