49 citations · 325 across the 22 of their papers we have counts for
20 papers · 1 filter
Separable character of ab initio No-Core Shell Model one-body densities
J. Foy, Ch. Elster, P. Maris +2
Motivated by recent findings on the separability of optical potentials that are derived from folding off-shell densities with off-shell nucleon-nucleon amplitudes, we study the off…
Adding Corrections to Global Spherical Potentials for Use in a Coupled-Channel Formulation
S. P. Weppner, Prakrut Patel, C. Miller +2
The coupled-channel technique augments a non-relativistic distorted wave born approximation scattering calculation to include a coupling to virtual states from the negative energy…
Nuclear structure and elastic scattering observables obtained consistently with different NN interactions
R. B. Baker, M. Burrows, Ch. Elster +3
Nucleon-nucleon () interactions based on chiral effective theories are commonly used in ab initio calculations of light nuclei. Here we present a study based on three different…
Ab initio nucleon-nucleus elastic scattering with chiral effective field theory uncertainties
R. B. Baker, B. McClung, Ch. Elster +4
Background: Effective interactions for nucleon-nucleus () elastic scattering from first principles require the use of the same nucleon-nucleon () interaction in the structu…
Nonlocal structure of the leading order \textit{ab initio} effective potentials for proton elastic scattering from light nuclei
Ch. Elster, M. Burrows, R. B. Baker +4
Based on the spectator expansion of the multiple scattering series we employ a chiral next-to-next-to-leading order (NNLO) nucleon-nucleon interaction on the same footing in the st…
Nuclear spin features relevant to ab initio nucleon-nucleus elastic scattering
R. B. Baker, M. Burrows, Ch. Elster +4
Background: Effective interactions for elastic nucleon-nucleus scattering from first principles require the use of the same nucleon-nucleon interaction in the structure and reactio…
Ab initio Leading Order Effective Potentials for Elastic Nucleon-Nucleus Scattering
M. Burrows, R. B. Baker, Ch. Elster +4
Background: Calculating microscopic effective interactions (optical potentials) for elastic nucleon-nucleus scattering has already in the past led to a large body of work. For firs…
Spin dependent ab initio nonlocal No-Core Shell-Model One-Body Densities
G. Popa, M. Burrows, Ch. Elster +3
Constructing microscopic effective interactions (`optical potentials') for nucleon-nucleus (NA) elastic scattering requires in first order off-shell nucleon-nucleon (NN) scattering…
Ab initio folding potentials for proton-nucleus scattering with NCSM nonlocal one-body densities
Ch. Elster, M. Burrows, S. P. Weppner +3
Based on the spectator expansion of the multiple scattering series we employ a nonlocal translationally invariant nuclear density derived from a chiral next-to-next-to-leading orde…
Ab initio Folding Potentials for Nucleon-Nucleus Scattering based on NCSM One-Body Densities
M. Burrows, Ch. Elster, S. P. Weppner +4
Calculating microscopic optical potentials for elastic nucleon-nucleus scattering has already led to large body of work in the past. For folding first-order calculations the nucleo…
Open Shell Effects in a Microscopic Optical Potential for Elastic Scattering of He
A. Orazbayev, Ch. Elster, S. P. Weppner
Elastic scattering observables (differential cross section and analyzing power) are calculated for the reaction He(p,p)He at projectile energies starting at 71 MeV/nucleon.…
Microscopic Optical Potentials for Helium-6 Scattering off Protons
Ch. Elster, A. Orazbayev, S. P. Weppner
The differential cross section and the analyzing power are calculated for elastic scattering of He from a proton target using a microscopic folding optical potential, in which…
Elastic Scattering of He based on a Cluster Description
S. P. Weppner, Ch. Elster
Elastic scattering observables (differential cross section and analyzing power) are calculated for the reaction He(p,p)He at projectile energies starting at 71 MeV/nucleon.…
An isospin dependent global nucleon-nucleus optical model at intermediate energies
S. P. Weppner, R. B. Penney, G. W. Diffendale +1
A global nucleon-nucleus optical potential for elastic scattering has been produced which replicates experimental data to high accuracy and compares well with other recently formul…
Insensitivity of the elastic proton-nucleus reaction to the neutron radius of 208Pb
J. Piekarewicz, S. P Weppner
The sensitivity--or rather insensitivity--of the elastic proton-nucleus reaction to the neutron radius of 208Pb is investigated using a non-relativistic impulse-approximation appro…
Application of the Pauli principle in many-body scattering
S. P. Weppner
A new development in the antisymmetrization of the first-order nucleon-nucleus elastic microscopic optical potential is presented which systematically includes the many-body charac…
Off-Shell Structures of Nucleon-Nucleon t-matrices and their Influence on Nucleon-Nucleus Elastic Scattering Observables
S. P. Weppner, Ch. Elster, D. Hueber
The sensitivity of nucleon-nucleus elastic scattering observables to the off-shell structure of nucleon-nucleon t-matrices, derived from realistic NN potentials, is investigated wi…
Energy Dependence of the NN t-matrix in the Optical Potential for Elastic Nucleon-Nucleus Scattering
Ch. Elster, S. P. Weppner
The influence of the energy dependence of the free NN t-matrix on the optical potential of nucleon-nucleus elastic scattering is investigated within the context of a full-folding m…
Full-Folding Optical Potentials for Elastic Nucleon-Nucleus Scattering based on Realistic Densities
Ch. Elster, S. P. Weppner, C. R. Chinn
Optical model potentials for elastic nucleon nucleus scattering are calculated for a number of target nuclides from a full-folding integral of two different realistic target densit…
Consistent Treatment of Propagator Modifications in Elastic Nucleon-Nucleus Scattering within the Spectator Expansion
C. R. Chinn, Ch. Elster, R. M. Thaler +1
The theory of the elastic scattering of a nucleon from a nucleus is presented in the form of a Spectator Expansion of the optical potential. Particular attention is paid to the tre…