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.

scholarly journals Inelastic Proton Scattering Analyses and Ambiguities in Spin–Parity Assignments of States in 12C

1996 ◽  
Vol 49 (3) ◽  
pp. 645 ◽  
Author(s):  
S Karataglidis ◽  
PJ Dortmans ◽  
K Amos ◽  
R de Swiniarski
Keyword(s):  
Inelastic Scattering ◽  
Proton Scattering ◽  
Distorted Wave ◽  
Spin Parity ◽  
Wave Approximation ◽  
Inelastic Proton Scattering ◽  
T Values

Data from the excitation of the 13�35, 18�35, 19�20 and 19�40 MeV states in 12C by the inelastic scattering of protons have been analysed using a fully microscopic distorted wave approximation to determine optimal assignments from amongst the current and ambiguous J π; T values of each state involved. While not conclusive, the present analysis suggests the assignments of 4-1; 0, 2-2; 0, 4-2; 0 and 22-2; 1 respectively.

scholarly journals Analyses of Inelastic Proton Scattering to High Spin States of Unnatural Parity

1978 ◽  
Vol 31 (1) ◽  
pp. 1 ◽  
Author(s):  
K Amos ◽  
J Morton ◽  
I Morrison ◽  
R Smith
Keyword(s):  
High Spin ◽  
Spin States ◽  
Proton Scattering ◽  
Distorted Wave ◽  
Nucleon Interaction ◽  
Hartree Fock ◽  
High Spin States ◽  
Wave Approximation ◽  
Unnatural Parity ◽  
Inelastic Proton Scattering

Distorted wave approximation analyses of 135 MeV inelastic proton scattering to high spin (4 - and 6-) unnatural parity states in 24Mg and 28Si have been made to test the character of an effective two-nucleon interaction, assuming a transition spectroscopy of particle-hole excitation from a projected Hartree-Fock intrinsic ground state.

scholarly journals An Analytic Distorted Wave Approximation for Intermediate Energy Proton Scattering

1983 ◽  
Vol 36 (2) ◽  
pp. 135 ◽  
Author(s):  
F Di Marzio ◽  
K Amos
Keyword(s):  
Nuclear Structure ◽  
Intermediate Energy ◽  
Proton Scattering ◽  
Distorted Wave ◽  
Wave Approximation ◽  
Energy Proton ◽  
Inelastic Proton Scattering

An analytic distorted wave approximation (ADWA) has been developed for use in analyses of intermediate energy inelastic proton scattering from nuclei. Applications are made to analyse 402 and 800 MeV data from the isoscalar and isovector 1 + and 2+ states in 12C and to the 800 MeV data from the excitation of the 2-(8�88 MeV) state in 160. Comparisons of predictions made using different model two-nucleon t matrices and different models of nuclear structure are given.

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.

scholarly journals Proton Inelastic Scattering in the Interacting Boson Model: Formalism and Application to the Ge Isotopes

1984 ◽  
Vol 37 (5) ◽  
pp. 463 ◽  
Author(s):  
W Bauhoff ◽  
I Morrison
Keyword(s):  
Inelastic Scattering ◽  
Interacting Boson Model ◽  
Symmetric Model ◽  
Proton Scattering ◽  
Matrix Elements ◽  
Proton Inelastic Scattering ◽  
Inelastic Proton Scattering ◽  
Boson Model ◽  
Coupled Channel ◽  
Model Formalism

The application of the interacting boson model to the coupled channel description of inelastic proton scattering is studied. The radial shape of the transition potentials is determined by analogy to the usual geometrical models, whereas the reduced matrix elements are calculated from the boson Hamiltonian. The general formalism is applied to scattering from the Ge isotopes. We find a better description for the heavier isotopes in terms of an O(6)-symmetric model than for a vibrational model.

Inelastic proton scattering from 42Ca and 44Ca and analysis in terms of shell-model form factors

1968 ◽  
Vol 116 (3) ◽  
pp. 580-608 ◽  
Author(s):  
J.C. Bane ◽  
J.J. Kraushaar ◽  
B.W. Ridley ◽  
M.M. Stautberg
Keyword(s):  
Shell Model ◽  
Form Factors ◽  
Proton Scattering ◽  
Model Form ◽  
Inelastic Proton Scattering

Neutron transition densities for low lying states in58Niobtained by using 200 MeV inelastic proton scattering

1998 ◽  
Vol 58 (4) ◽  
pp. 2217-2228 ◽  
Author(s):  
J. Lisantti ◽  
A. D. Bacher ◽  
G. P. A. Berg ◽  
S. M. Bowyer ◽  
S. Chang ◽  
...  
Keyword(s):  
Proton Scattering ◽  
Transition Densities ◽  
Inelastic Proton Scattering
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