Sensitivity of nucleon-nucleus scattering to the off-shell behavior of on-shell equivalent<i>NN</i>potentials

Arellano, H. F.; Brieva, F. A.; Sander, M.; Geramb, H. V. von

doi:10.1103/physrevc.54.2570

Cited by 26 publications

(23 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…23) It is pointed out in Ref. 24) that the medium modifications to the nucleon-nucleon interaction are important. Such medium effects are also included in the SBM interaction through its density dependence.…”

Section: Folded Potentialsupporting

confidence: 68%

Soft Dipole Resonance in 11Li

Kanungo

Tanihata

Samanta

1999

Progress of Theoretical Physics

View full text Add to dashboard Cite

The 68A MeV 11 Li + p scattering data are reanalysed in a microscopic framework. The real, imaginary and transition potentials are constructed in a single folding model using an isospin, density and momentum dependent finite-range effective nucleon-nucleon interaction and several microscopic 11 Li density distribution prescriptions for 11 Li. The transition density is formulated in a soft-dipole resonance mode (SDR) by modifying the Goldhaber-Teller (G-T) model. Analyses of the angular distribution of the 1.3 MeV excited state gives a result consistent with SDR excitation in 11 Li with significant channel coupling effect. at UNIVERSITY OF PITTSBURGH on July 25, 2015 http://ptp.oxfordjournals.org/ Downloaded from at UNIVERSITY OF PITTSBURGH on July 25, 2015 http://ptp.oxfordjournals.org/ Downloaded from

show abstract

Section: Folded Potentialsupporting

confidence: 68%

Soft Dipole Resonance in 11Li

Kanungo

Tanihata

Samanta

1999

Progress of Theoretical Physics

View full text Add to dashboard Cite

show abstract

“…A rational representation of the spectral density [5] again yields an algebraic form for the Gel'fand-Levitan equation 11) and the desired potential is obtained from…”

Section: A Marchenko Inversionmentioning

confidence: 99%

“…Application of model potentials in (p, pγ) Bremsstrahlung [9], calculations of triton binding energy [10] and -most recently -usage of boson exchange and inversion potentials in an in-medium, full-folding optical potential model for nucleon-nucleus scattering [11].…”

Section: The Quest For Off-shell Effectsmentioning

confidence: 99%

“…Embedded in an in-medium full-folding optical potential model various boson exchange and inversion potentials have been applied to calculate observables of nucleon-nucleus scattering [11]. In Figure 4 we show the results obtained for the differential cross section and analyzing power for 40 Ca(p, p) scattering at 500 MeV using the Paris potential together with inversion potentials from Paris model phase shifts and phases from the Arndt SM94 PWA [14].…”

Section: Nucleon-nucleus Scatteringmentioning

confidence: 99%

See 1 more Smart Citation

Modeling of nucleon-nucleon potentials, quantum inversion versus meson exchange pictures

Jaede¹,

Sander²,

Geramb

1997

Inverse and Algebraic Quantum Scattering Theory

Self Cite

View full text Add to dashboard Cite

The notion of interacting elementary particles for low and medium energy nuclear physics is associated with definitions of potential operators which, inserted into a Lippmann-Schwinger equation, yield the scattering phase shifts and observables. In principle, this potential carries the rich substructure consisting of quarks and gluons and thus may be deduced from some microscopic model. In this spirit we propose a boson exchange potential from a nonlinear quantum field theory. Essentially, the meson propagators and form factors of conventional models are replaced by amplitudes derived from the dynamics of self-interacting mesons in terms of solitary fields. Contrary to deduction, we position the inversion approach. Using Gel'fand-Levitan and Marchenko inversion we compute local, energy-independent potentials from experimental phase shifts for various partial waves. Both potential models give excellent results for on-shell NN scattering data. In the off-shell domain we study both potential models in (p, pγ) Bremsstrahlung, elastic nucleon-nucleus scattering and triton binding energy calculations. It remains surprising that for * Contribution to the International Conference on Inverse and Algebraic Quantum Scattering Theory, Lake Balaton '96.

show abstract

“…Those light mass systems usually have been considered as few-body problems and the data analysed with few-body methods. We note also that microscopic model analyses determined within a momentum space framework for elastic proton scattering have been made, with varying degrees of success [10][11][12][13]. The energies considered by these microscopic analyses (both in coordinate and momentum space) lie in a 'transition' region between low and intermediate energies.…”

Section: Introductionmentioning

confidence: 99%

Microscopic model analyses of the elastic scattering of 65 MeV protons from targets of diverse mass

et al. 1998

View full text Add to dashboard Cite

Nonlocal coordinate space optical potentials for the scattering of 65 MeV protons from nuclei ranging in mass from 6 Li to 238 U have been defined by folding a complex, medium dependent effective interaction with the density matrix elements of each target. The effective interaction is based upon solutions of the Lippmann-Schwinger and Brueckner-Bethe-Goldstone equations having the Paris potential as input. The nuclear structure information required in our folding model are the one body density matrix elements for the target and the single nucleon bound state wave functions that they weight. For light mass nuclei, very large basis shell model calculations have been made to obtain the one body density matrix elements. For medium and heavy mass nuclei, a very simple shell model prescription has been used. The bound state single particle wave functions that complete the nuclear density matrices are either Woods-Saxon or harmonic oscillator functions. The former are employed in most cases when large basis structure is available. For light nuclei (A ≤ 16) Woods-Saxon potential parameters and harmonic oscillator lengths are determined from fits to electron scattering form factors. For all other nuclei, we use harmonic oscillator functions with the oscillator lengths set from an A 1/6 mass law. Using this microscopic model, optical potentials result from which differential cross sections, analyzing powers and spin rotations are found. In general the calculated results compare very well with data when the effective interactions are determined from a mapping of nucleon-nucleon g matrices. This is not the case when effective interactions built from a mapping of (free) t matrices are used.

show abstract

Sensitivity of nucleon-nucleus scattering to the off-shell behavior of on-shell equivalentNNpotentials

Cited by 26 publications

References 27 publications

Soft Dipole Resonance in 11Li

Soft Dipole Resonance in 11Li

Modeling of nucleon-nucleon potentials, quantum inversion versus meson exchange pictures

Microscopic model analyses of the elastic scattering of 65 MeV protons from targets of diverse mass

Contact Info

Product

Resources

About