Elastic and inelastic scattering of 30 and 50 Mev polarized and unpolarized beams of protons by 40Ar and 14N

Rush, A.A.; Burge, E J; Smith, Dale

doi:10.1016/0375-9474(71)90438-6

Cited by 25 publications

(10 citation statements)

References 21 publications

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“…The experimental data are taken from Refs. [42,49,[70][71][72][73]. below 50 MeV, the diffraction pattern varies by changing r g .…”

Section: Theoretical Ambiguity Coming From the Local Density Approxim...mentioning

confidence: 99%

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Reexamination of microscopic optical potentials based on multiple scattering theory

Minomo,

Washiyama,

Ogata

2017

Preprint

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Background: Microscopic optical potentials have been successful in describing nucleon-nucleus and nucleusnucleus scattering. Some essential ingredients of the framework, however, have not been examined in detail. Purpose: Applicability of the microscopic folding model is systematically investigated. Effect of an antisymmetrization factor (ASF) appearing in multiple scattering theory, theoretical uncertainty regarding the local density approximation (LDA), and the validity of a prescription for nonlocality, the Brieva-Rook (BR) localization, of the microscopic potential, are quantitatively estimated for nucleon-nucleus scattering; investigation on the ASF is carried out for also deuteron-nucleus scattering. Methods: A single folding model with the Melbourne g-matrix interaction and the SLy4 Skyrme-type Hartree-Fock-Bogoliubiv (SLy4-HFB) density is employed for evaluating a nucleon-nucleus microscopic optical potential. Deuteron-nucleus scattering is described by the continuum-discretized coupled-channels method incorporating the microscopic proton-nucleus and neutron-nucleus potentials. Results: The ASF is found to affect proton total reaction cross sections σR for a 12 C target below 200 MeV by about 10%. Effect of the ASF on σR is negligibly small if a target nucleus is heavy or scattering energy is above 200 MeV; elastic cross sections are hardly affected by the ASF for all the reaction systems considered. Below 65 MeV, still the BR localization works quite well. However, at energies below about 50 MeV, the LDA becomes less accurate for evaluating elastic cross sections at backward angles. This is the case also for σR of p-12 C below about 200 MeV. Conclusions: The microscopic model is applicable to nucleon-nucleus scattering above 25 MeV for target nuclei in a wide range of mass numbers. Deviation of calculated results from experimental data is less than about 10%.

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“…The experimental data are taken from Refs. [42,49,[70][71][72][73]. below 50 MeV, the diffraction pattern varies by changing r g .…”

Section: Theoretical Ambiguity Coming From the Local Density Approxim...mentioning

confidence: 99%

“…The incident energies are26, 35, 50, 122, and 200 MeV from the top to the bottom, and the results are scaled for visibility by the factors in parentheses near the curves. The experimental data are taken from Refs [38][39][40][41][42][43][44][45]…”

mentioning

confidence: 99%

Reexamination of microscopic optical potentials based on multiple scattering theory

Minomo,

Washiyama,

Ogata

2017

Preprint

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“…The little difference appears at larger scattering angles due to the correction factor exp(−ν 2 q 2 /4A) [19], with ν being the size parameter of the HO wave function, multiplied to the elastic scattering differential cross sections. [37,38,39,40,41,42,43,44,45] for the elastic scattering, Refs. [46,47,39,41,48,42,43,49,50] for the 0 + → 2 + inelastic scattering, and Refs.…”

Section: Properties Of the Wave Functionsmentioning

confidence: 99%

“…Experimental data are taken from Refs. [37,38,39,40,41,42,43,44,45] for the elastic scattering, Refs. [46,47,39,41,48,42,43,49,50] for the 0 + → 2 + inelastic scattering, and Refs.…”

Section: Nucleusmentioning

confidence: 99%

Complete Glauber calculations for proton–nucleus inelastic cross sections

Hatakeyama

Horiuchi

2019

Nuclear Physics A

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We perform a parameter-free calculation for the high-energy proton-nucleus scattering based on the Glauber theory. A complete evaluation of the so-called Glauber amplitude is made by using the factorization of the single-particle wave functions. The multiple-scattering or multistep processes are fully taken into account within the Glauber theory. We demonstrate that proton-12 C, 20 Ne, and 28 Si elastic and inelastic scattering (J π = 0 + → 2 + and 0 + → 4 + ) processes are very well described in a wide range of the incident energies from ∼ 50 MeV to ∼ 1 GeV. We evaluate the validity of a simple one-step approximation and find that the approximation works fairly well for the inelastic 0 + → 2 + processes but not for 0 + → 4 + where the multistep processes become more important.As an application, we quantify the difference between the total reaction and interaction cross sections of proton-12 C, 20 Ne, and 28 Si collisions.

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“…Almost all of the experimental scattering data available are for elastic scattering. The only inelastic polarization results are the data of Rush et al [6] for incident protons of 30.4 and 49.4 MeV measured only for the first 2 + 1 level at 1.46-MeV excitation. We have now reanalyzed our raw scattering spectra [5] which were used before by us to determine the elastic-scattering data, to make available data for the 2 + (1.46 MeV) and negative-parity level 3 − (3.68 MeV) in a wide angular range.…”

Section: Introductionmentioning

confidence: 99%

Angular distributions of protons scattered byAr40nuclei with excitation of the2+(1.46 MeV) and
Okumuşoğlu¹,
Görür²,
Bírchall³
et al. 2007
Phys. Rev. C
4
0
2
0
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Elastic and inelastic scattering of unpolarized and polarized protons by 40 Ar nuclei for incident energies between 20 and 50 MeV has been studied by reanalyzing experimental scattering spectra for the 2 + (1.46 MeV) and 3 − (3.68 MeV) levels in the angular range 30 • -160 • for incident protons of energies of 25.1, 32.5, and 40.7 MeV. An isospin dependent soft-rotator coupled-channels optical model with the potential containing a dispersive term with a nonlocal contribution is used to analyze the data.

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Elastic and inelastic scattering of 30 and 50 Mev polarized and unpolarized beams of protons by 40Ar and 14N

Cited by 25 publications

References 21 publications

Reexamination of microscopic optical potentials based on multiple scattering theory

Reexamination of microscopic optical potentials based on multiple scattering theory

Complete Glauber calculations for proton–nucleus inelastic cross sections

Angular distributions of protons scattered byAr40nuclei with excitation of the2+(1.46 MeV) and
Okumuşoğlu¹,
Görür²,
Bírchall³
et al. 2007
Phys. Rev. C
4
0
2
0
View full text Add to dashboard Cite

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Elastic and inelastic scattering of 30 and 50 Mev polarized and unpolarized beams of protons by 40Ar and 14N

Cited by 25 publications

References 21 publications

Reexamination of microscopic optical potentials based on multiple scattering theory

Reexamination of microscopic optical potentials based on multiple scattering theory

Complete Glauber calculations for proton–nucleus inelastic cross sections

Angular distributions of protons scattered byAr40nuclei with excitation of the2+(1.46 MeV) andOkumuşoğlu1, Görür2, Bírchall3 et al. 2007Phys. Rev. C4020View full textAdd to dashboardCite

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Angular distributions of protons scattered byAr40nuclei with excitation of the2+(1.46 MeV) and
Okumuşoğlu¹,
Görür²,
Bírchall³
et al. 2007
Phys. Rev. C
4
0
2
0
View full text Add to dashboard Cite