Scattering of 185 MeV Protons from<sup>90</sup>Zr

Hagberg, E.; Ingemarsson, A.; Sundqvist, B.

doi:10.1088/0031-8949/3/6/002

Cited by 33 publications

(6 citation statements)

References 36 publications

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“…Moreover, the comparison between the data and calculations at higher energies from extrapolation of the dispersive OMP parameters with smooth energy dependence to 160 [23], and 185 [23,33] MeV is shown in Figs. 7 and 8, and the agreement is reasonable.…”

Section: Best-fit Dispersive Omp Analysismentioning

confidence: 99%

Proton−90Zr mean field between -60 and +185 MeV from a dispersive optical model analysis

et al. 1993

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Elastic scattering of protons from Zr in the energy range E~= 9.8 to 135 MeV is analyzed using a dispersive optical model potential (OMP). In this analysis, a dispersion relation connects the volume integrals of the imaginary and the real parts of the OMP. Best-fit dispersive OMP parameters are obtained from fits to experimental cross section and analyzing power data at each energy, while the volume integrals of the imaginary potential and dispersive correction terms are fixed at the empirical values obtained in the individual proton elastic scattering analyses from 9.8 to 135 MeV. Predictions of the cross section and analyzing power angular distributions from the best-fit dispersive OMP and conventional OMP are obtained, and give similar quality fits to data. A dispersive OMP with parameters that show a smooth energy dependence are determined from fits to the entire data set. Comparison of cross sections and analyzing powers calculated by the dispersive OMP with experimental data at 160 and 185 MeV is also presented. The dispersive OMP with a smooth energy dependence is extended to the negative energy region with the guidance of the known first single-particle and single-hole state energies near the Fermi energy, EF = -6.8 MeV, to provide parameters for the shell model potential. This analysis also provides estimates for single-particle and hole energies E"», root-mean-square radii R"l,, expectation values of the effective mass (m */m ) "I,, occupation probabilities X"&,, absolute spectroscopic factors S"l,, and spectral functions g"&, (E") for proton single-particle and single-hole orbits in Zr. These estimates are compared with available experimental information.PACS number(s): 24. 10.Ht, 24.70.+s, 25.40.Cm

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Section: Best-fit Dispersive Omp Analysismentioning

confidence: 99%

Proton−90Zr mean field between -60 and +185 MeV from a dispersive optical model analysis

et al. 1993

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“…The data Presented by Johansson et al [4] and by Hagberg et al [5] for 180-MeV proton scattering constitute a fairly complete set of differential cross sections, polarizations and reaction cross sections for a range of nuclei. Apart from the analysis performed in the original work some of these results have later been analysed in the optical model by many authors, e.g., Satchler and Haybron [6], Batty [7], Eriksson and Rinander [8], Elton 191 and Seth [lo].…”

Section: Introductionmentioning

confidence: 99%

Optical Model Analysis of Elastic Proton Scattering at 180 MeV

Ingemarsson

Tibell

1971

Phys. Scr.

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“…5 shows in the top panels the differential cross sections for the lowest 3-states in 9°Zr and 2°spb for (p,pt) scattering at 201 MeV (this work) with calculations for the S = 0 isoscalar normal mode based on the Paris and Bonn G-matrices and on the t-matrix of Franey and Love. The left bottom panel shows the polarization for 9°Zr at 185 MeV, with the data of Hagberg et al [43]. The analyzing power for 2°spb is shown in the right bottom-panel with (part of) the data of Lee et al [44].…”

Section: Normal Mode Analysis Of the 3 7 States In 9°zr And 2°spbmentioning

confidence: 94%

Localized 1ħω particle-hole strength in nuclei

et al. 1995

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General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. AbstractA cross section enhancement, persisting to high momentum transfer, has been observed around l hto in excitation energy in spectra from inelastic proton-, alpha-and electron scattering on 9°Zr, ll6Sn, 196pt and 2°spb. Data are presented for (p,p') at 201 MeV, (a,a') at 120 MeV and analyzed together with existing data obtained with 133.8 MeV polarized (l~,p') on 116Sn and electron-scattering data on Ll6Sn and ~96pt. Two different interpretations of the observed enhancement are discussed: that of the incoherent sum of all 1 hto cross section and alternatively the sum over the isoscalar normal modes of all multipolarities.Keywords: NUCLEAR REACTIONS 9°Zr, ll6Sn, 196pt, 2°spb (p,pt), E = 201 MeV; ll6Sn (polarized p,p'), E = 133.8 MeV; 9°Zr, ll6Sn, 196pt (~t, ctt), E = 120 MeV; measured o-(0), ll6Sn, 196pt (e,e~), E = 278, 333 MeV; measured form factors. 9°Zr, ll6Sn, 196pt, 2°Spb deduced 0, lhto strength distribution. DWBA calculation and effective NN-foree. A. Hofstee et al./Nuclear Physics A 588 (1995)

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Scattering of 185 MeV Protons from⁹⁰Zr

Cited by 33 publications

References 36 publications

Proton−90Zr mean field between -60 and +185 MeV from a dispersive optical model analysis

Proton−90Zr mean field between -60 and +185 MeV from a dispersive optical model analysis

Optical Model Analysis of Elastic Proton Scattering at 180 MeV

Localized 1ħω particle-hole strength in nuclei

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Scattering of 185 MeV Protons from90Zr

Cited by 33 publications

References 36 publications

Proton−90Zr mean field between -60 and +185 MeV from a dispersive optical model analysis

Proton−90Zr mean field between -60 and +185 MeV from a dispersive optical model analysis

Optical Model Analysis of Elastic Proton Scattering at 180 MeV

Localized 1ħω particle-hole strength in nuclei

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Product

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Scattering of 185 MeV Protons from⁹⁰Zr