Isospin effects in nucleon inelastic scattering from single-closed-shell nuclei. (I). The N = 50 isotones

D. E. Bainum, R. W. Finlay, J. Rapaport, M. H. Hadizadeh, J. D. Carlson, J. R. Comfort

Research output: Contribution to journalArticle

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Abstract

Accurate measurements of elastic- and inelastic-scattering differential cross sections are obtained over a wide angular range for 11 MeV neutrons incident on 88Sr, 90Zr and 92Mo. The absolute cross sections are accurate to better than 5%. The parameters of complex optical potentials were extracted from the elastic-scattering data and applied via the collective model to the description of the cross sections of the first 2+ state of each isotope. Deformation parameters βnn′ (and lengths) δ = βR) were obtained for the quadrupole excitations and compared with similar parameters obtained from (p, p′) data on the same nuclei. The results clearly indicate that βnn′ > βpp′ for the N = 50 isotones, in good agreement with the theoretical predictions of Madsen, Brown and Anderson. The values of βnn′ and βpp′ are used to extract the isoscalar and isovector deformation parameters β0 and β1.

Original languageEnglish (US)
Pages (from-to)492-506
Number of pages15
JournalNuclear Physics, Section A
Volume311
Issue number3
DOIs
StatePublished - Dec 4 1978
Externally publishedYes

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inelastic scattering
nuclei
cross sections
elastic scattering
isotopes
quadrupoles
neutrons
predictions
excitation

Keywords

  • Nuclear reactions

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Bainum, D. E., Finlay, R. W., Rapaport, J., Hadizadeh, M. H., Carlson, J. D., & Comfort, J. R. (1978). Isospin effects in nucleon inelastic scattering from single-closed-shell nuclei. (I). The N = 50 isotones. Nuclear Physics, Section A, 311(3), 492-506. https://doi.org/10.1016/0375-9474(78)90526-2

Isospin effects in nucleon inelastic scattering from single-closed-shell nuclei. (I). The N = 50 isotones. / Bainum, D. E.; Finlay, R. W.; Rapaport, J.; Hadizadeh, M. H.; Carlson, J. D.; Comfort, J. R.

In: Nuclear Physics, Section A, Vol. 311, No. 3, 04.12.1978, p. 492-506.

Research output: Contribution to journalArticle

Bainum, DE, Finlay, RW, Rapaport, J, Hadizadeh, MH, Carlson, JD & Comfort, JR 1978, 'Isospin effects in nucleon inelastic scattering from single-closed-shell nuclei. (I). The N = 50 isotones', Nuclear Physics, Section A, vol. 311, no. 3, pp. 492-506. https://doi.org/10.1016/0375-9474(78)90526-2
Bainum, D. E. ; Finlay, R. W. ; Rapaport, J. ; Hadizadeh, M. H. ; Carlson, J. D. ; Comfort, J. R. / Isospin effects in nucleon inelastic scattering from single-closed-shell nuclei. (I). The N = 50 isotones. In: Nuclear Physics, Section A. 1978 ; Vol. 311, No. 3. pp. 492-506.
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AU - Carlson, J. D.

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N2 - Accurate measurements of elastic- and inelastic-scattering differential cross sections are obtained over a wide angular range for 11 MeV neutrons incident on 88Sr, 90Zr and 92Mo. The absolute cross sections are accurate to better than 5%. The parameters of complex optical potentials were extracted from the elastic-scattering data and applied via the collective model to the description of the cross sections of the first 2+ state of each isotope. Deformation parameters βnn′ (and lengths) δ = βR) were obtained for the quadrupole excitations and compared with similar parameters obtained from (p, p′) data on the same nuclei. The results clearly indicate that βnn′ > βpp′ for the N = 50 isotones, in good agreement with the theoretical predictions of Madsen, Brown and Anderson. The values of βnn′ and βpp′ are used to extract the isoscalar and isovector deformation parameters β0 and β1.

AB - Accurate measurements of elastic- and inelastic-scattering differential cross sections are obtained over a wide angular range for 11 MeV neutrons incident on 88Sr, 90Zr and 92Mo. The absolute cross sections are accurate to better than 5%. The parameters of complex optical potentials were extracted from the elastic-scattering data and applied via the collective model to the description of the cross sections of the first 2+ state of each isotope. Deformation parameters βnn′ (and lengths) δ = βR) were obtained for the quadrupole excitations and compared with similar parameters obtained from (p, p′) data on the same nuclei. The results clearly indicate that βnn′ > βpp′ for the N = 50 isotones, in good agreement with the theoretical predictions of Madsen, Brown and Anderson. The values of βnn′ and βpp′ are used to extract the isoscalar and isovector deformation parameters β0 and β1.

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