dorsal/arxiv
View SchemaProgress in the Development of Global Medium-Energy Nucleon-Nucleus Optical Model Potentials
| Authors | David G. Madland |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9702035 |
| URL | https://arxiv.org/abs/nucl-th/9702035 |
Abstract
Two existing global medium-energy nucleon-nucleus phenomenological optical model potentials are described and compared with experiment and with each other. The first of these employs a Dirac approach (second-order reduction) that is global in projectile energy and projectile isospin and applies to the target nucleus 208-Pb. Here the standard S-V (isoscalar-scalar, isoscalar-vector) model has been extended to include the corresponding isovector components by introduction of a relativistic Lane model. The second of these employs a relativistic equivalent to the Schroedinger equation and is global in projectile energy, projectile isospin, and target (Z,A). Here, particular attention is given to predictions for the integrated scattering observables - neutron total cross sections and proton total reaction cross sections - and their sensitivity to the absorptive parts of the potential. Finally, current work is described and the influence of the nuclear bound state problem (treated in relativistic mean field theory) on the Dirac scattering problem is mentioned.
{
"annotation_id": "56b34ad4-5546-4023-b4b8-3ea6163fe552",
"date_created": "2026-03-02T18:00:18.727000Z",
"date_modified": "2026-03-02T18:00:18.727000Z",
"file_hash": "4e4c42a8a0787213695afa072e037c7a7bb924436c24317cacfcaf213d0b8ae9",
"private": false,
"record": {
"abstract": "Two existing global medium-energy nucleon-nucleus phenomenological optical\nmodel potentials are described and compared with experiment and with each\nother. The first of these employs a Dirac approach (second-order reduction)\nthat is global in projectile energy and projectile isospin and applies to the\ntarget nucleus 208-Pb. Here the standard S-V (isoscalar-scalar,\nisoscalar-vector) model has been extended to include the corresponding\nisovector components by introduction of a relativistic Lane model. The second\nof these employs a relativistic equivalent to the Schroedinger equation and is\nglobal in projectile energy, projectile isospin, and target (Z,A). Here,\nparticular attention is given to predictions for the integrated scattering\nobservables - neutron total cross sections and proton total reaction cross\nsections - and their sensitivity to the absorptive parts of the potential.\nFinally, current work is described and the influence of the nuclear bound state\nproblem (treated in relativistic mean field theory) on the Dirac scattering\nproblem is mentioned.",
"arxiv_id": "nucl-th/9702035",
"authors": [
"David G. Madland"
],
"categories": [
"nucl-th"
],
"title": "Progress in the Development of Global Medium-Energy Nucleon-Nucleus Optical Model Potentials",
"url": "https://arxiv.org/abs/nucl-th/9702035"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "c083f22d-0808-40f7-9c1f-0cbdc7205c77",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}