Analytic distorted wave approximation for pion scattering from nuclei

1985 ◽  
Vol 31 (2) ◽  
pp. 561-569 ◽  
Author(s):  
F. Di Marzio ◽  
K. Amos
Keyword(s):  
Distorted Wave ◽  
Pion Scattering ◽  
Wave Approximation

scholarly journals An Analytic Distorted Wave Approximation for Electropion and Photopion Production on 12C near Threshold

1986 ◽  
Vol 39 (2) ◽  
pp. 203 ◽  
Author(s):  
F Di Marzio ◽  
K Amos
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Distorted Wave ◽  
Pion Scattering ◽  
Wave Approximation ◽  
Microscopic Models ◽  
Transition Densities ◽  
Analyse Data ◽  
Near Threshold

An analytic distorted wave approximation (ADWA) that can be used to analyse photopion and electropion production cross sections is developed. An application is made to analyse data from 12C near threshold once the approximation scheme is established as a realistic replacement for the more usual, distorted wavefunctions given by the optical model for low energy pion scattering. The pion production data analyses made using a generalized Helm model for the transition densities clearly demonstrates the significant role of distortion effects and that the ADW A is a good and simple representation of these effects. Repeating the analyses using microscopic models of nuclear structure indicates inadequacies in those structure specifications.

Erratum: Analytic distorted wave approximation for kaon-nucleus interactions

1984 ◽  
Vol 30 (5) ◽  
pp. 1767-1767
Author(s):  
K. Amos ◽  
F. Di Marzio
Keyword(s):  
Distorted Wave ◽  
Wave Approximation

A Comparison of Spectroscopic Models of Low Excitation 2+ States in 24Mg and 28Si from Inelastic Proton Scattering

1980 ◽  
Vol 33 (3) ◽  
pp. 495 ◽  
Author(s):  
K Amos ◽  
P Nesci ◽  
I Morrison
Keyword(s):  
Inelastic Scattering ◽  
Shell Model ◽  
Proton Scattering ◽  
Distorted Wave ◽  
Potential Models ◽  
Wave Approximation ◽  
Transition Mechanism ◽  
Transition Densities ◽  
Inelastic Proton Scattering ◽  
Mev Protons

Distorted wave approximation analyses of the inelastic scattering of 49�5 MeV protons from 24Mg and 28Si are used to compare 2 + transition densities that were obtained from a standard shell model, deformed potential models and an SU(3) model of the low excitation spectroscopy of these nuclei. Analysing power predictions do not reproduce the data adequately, and the discrepancies indicate a deficiency in the prescription for the transition mechanism.

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